The information about these centers is provided by the Office of the State Superintendent of Education.
The Office of the Deputy Mayor for Planning and Economic Development (DMPED) is charged with executing the Mayor's economic development strategy. DMPED manages a portfolio of real estate projects located across the District of Columbia. More information is available on the Project Pipeline Database (PPD)Public Access Dashboard.
Brain health phone or web-based resources that are often necessary for the safety and support of citizens with memory loss, cognitive impairment or dementia. These organizations may have a mailing or physical address outside of the District of Columbia. The services and resources listed are specific to or inclusive of those living with memory loss or dementia, regardless of whether they have received a formal diagnosis of dementia. Consumers are encouraged to request further information and references from service providers before utilizing their services.
U.S Appropriations are lands set aside at the time of the original founding and platting of the city for use by the U.S. Federal Government. The White House, for instance, Treasury Building, Ellipse and LaFayette Park all sit on Appropriation No. 1. D.C General Hospital is on Appropriation No.13 (with the consent of the Federal Government). Appropriations are often confused with U.S Reservations but the two terms are not interchangeable. There are 17 U.S Appropriations in Washington, D.C., all of which are located within the limits of the Original City and, by definition; there can never be any more.
Tax Lot points. DC's Real Property Tax Administration defines assessment and taxation lots, often referred to as A&T lots or simply tax lots. These lots are strictly for real estate taxation purposes and normally defined under two circumstances: When property owners ask for their real property tax bills to be consolidated, after they have bought several contiguous record lots; this is called a combine; When part of a record lot is sold, but no new record lot is yet defined; this is called a split request. Tax lots are not determined by survey, and are therefore not official lots in the same way record lots are. These lots are normally numbered between 800 and 1999within a square to differentiate them from record lots on the property tax maps. When a tax lot is established by RPTA, an A&T Plat is generated by RPTA and forwarded to the surveyor’s office. These A&T Plats are not reviewed but simply filed by the Surveyor; they do not comply with the standards required of subdivision plats, and are not recorded. Tax Lots are not normally acceptable when applying for building permits and must be converted to Record Lots through the normal subdivision process involving the D.C. Surveyor’s Office before permits will be issued. The only exception is if the lot does not face a public street. Furthermore, at the time of their creation and platting, there is no review made of tax lots for compliance with D.C. Zoning, Subdivisions or any other ordinances. These lots are simply pieces of property, owned by somebody, described in deeds, for which tax bills are sent and real estate taxes are collected by the city. Some Record Lots also function in this capacity. Geographically, tax lots typically overlay layers such as record lots or sometimes reservations. There are known instances where tax lots do not overlay these types of layers. Up until approximately 1972, A&T lots were only created by the Tax Assessor out of lands that had been previously Record Lots at some point in their history. For a short period of time in the early to mid 1970’s, a decision was made to start eliminating fractional parcels (see definition below) and make them all into A&T lots. The intent was to do away with Parcels altogether and have all properties in the city be either tax lots or record lots. By doing this, they converted unsubdivided parcels into A&T lots where no underlying record lot exists. There is often little or no historical source information about these types of transactions therefore vectorizing them often required vast amounts of research.
A route designated as “no through-trucks over 1 and ¼ ton capacity” signifies a roadway where no person shall operate a truck over that size except for the purpose of arriving at his or her destination by the most direct route from the primary, or through, truck route at the intersection that is nearest to the destination. A route designated as “no through-trucks over two axles” signifies a roadway where no person shall operate a truck over two axles except for the purpose of arriving at his or her destination by the most direct route from the primary, or through, truck route at the intersection that is nearest to the destination. A route designated as “local deliveries allowed” signifies a roadway where trucks whether trucks are permitted on the roadway for local deliveries, otherwise no trucks are permitted on those roadways for any reason. Unless otherwise specifically posted, these restrictions do not apply to the following: School buses and school bus operations Transportation performed by the federal or District of Columbia government, a state, or any political subdivision of a state, or an agency established under a compact between states that has been approved by the Congress of the United States; Trucks that are not otherwise classified as a commercial vehicle, as defined in 18 DCMR 9901; The transportation of human corpses or sick and injured persons; The operation of police, fire, and rescue vehicles while involved in emergency and related operations; or The operation of utility, construction, or maintenance vehicles while involved in related operations for which the District has issued permits for work.
These organizations provide residential living specifically for those with memory loss or dementia and who are not able to or do not wish to live at home. Residential memory care provides a safe, supervised setting where residents are supported with independent activities of daily living (IADLs). Individuals who need more support for activities of daily living and hands-on nursing care may be able to live in assisted living memory units depending on the level of service available. Alternatively, they may require more hands-on support that is provided in dedicated nursing home memory care units. Residential care for persons with dementia is paid out of personal funds or through long-term care insurance. For some individuals, Medicaid may cover the cost of long-term care in specific institutions.
The table represents documentation (Book & Page) approved for condominium development. Projects can be built in multiple phases and thus the potential for several condo subdivisions per on dwelling. Users can join this table with the following map and table layers: Common Ownership Lots Vector Property Map Layers Condo Approval Lots Condo Relate Table to view all related condo subdivsions
Air right lots are reflect a party’s right to construct an improvement above an existing area of land that is not owned by the constructor. They are a type of development right in real estate referring to the empty space about a property. These tax lot numbers start at 7000. There are approximately 704 air rights lots. Non-contiguous Air Rights Lots numbered in 8000 series can either be District owned Multifamily rental units or Existing Development Mixed (residential and commercial). Multifamily 8000 series lots can be proposed development projects that are inclusive of the Mayor’s Office Affordable/Public Housing Initiatives. Additionally, they can either be development sites that are owned by the District and the site is leased to developer. Due to financing and legal requirements, each set of government funded units are required to have separate parcel ID’s (SSL’s). All the units are rentals, none of the units will be for sale. Existing Development Mixed Use 8000 series lots are residential owner(s) that own both residential and commercial portions. The Lot split is done to ensure each party pays the appropriate real estate taxes assessed to each specific use. There is a master covenant lease outlining property access-rights-use between residential and commercial owner and lease holders. There is also a master lease related to the commercial space where the residential owner is the lease holder.
U.S. Reservations are lands acquired for use by the Federal Government after the original founding of the city. These were all acquired by the Federal Government through purchase, condemnation, dedication or gift and almost all of the U.S. Reservations in Washington are under the Jurisdiction of the National Park Service. Unlike Appropriations, U.S. Reservations are found throughout the city. The National Park Service also has information for every U.S. Reservation and Appropriation in addition to DCRA Office of the Surveyor having some detailed information on transactional history. It should be noted that RPTA has converted some reservations to tax lots for land tracking purposes however the federal government still maintains ownership in many of these cases.
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. This dataset contains the active ID Card information issued to a customer. The information only includes age, id card type (regular or under 21), real ID or not validated, id card expiration date, and id card status.
Street Light Assets. The dataset contains locations and attributes of street lights provided by the District Department of Transportation (DDOT).
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. To get your vehicle inspected, you must drive it to the DC DMV Inspection Station and get in line with with the other cars. The vehicle inspection fee is not paid at the inspection station; instead, it is paid at the time of vehicle registration. Vehicles are inspected in the order they arrive during normal hours of operation. Or, you may make an appointment to have your vehicle inspected. Passenger vehicle inspection appointments are only available for vehicles from 1996 and newer. If your vehicle is a passenger vehicle, and 1996 and newer, click on the link below to schedule an appointment.
These resources can help connect individuals and their caregivers to services. A central referral line is available to connect residents to services provided through the Department of Aging and Community Living (DACL) and DC Lead Agencies. The DC Villages are also an essential service for referrals. Also included are resources for crisis management and veteran affiliated services.
Connection to Services Helplines and Crisis Care
All applicants for a Basic Business License operating from a commercial location in the District of Columbia must provide a Certificate of Occupancy (C of O) for the premise address from which the business activity is conducted in order to demonstrate the activity does not conflict with building and zoning codes. A certificate of occupancy is needed to occupy any structure other than a single family dwelling. To include the following uses: two family flat, apartment house, and all commercial uses.
The District of Columbia Revenue Bond Program provides market interest rate loans to help lower cost of funds available for capital projects. These bonds are used to finance a wide variety of projects including industrial and commercial development.
Squares are calculated by the outer extents of the record or tax lots within a defined area (typically a city block). There are roughly 4896 active squares. A Square is similar to a city block. Squares were numbered starting at 1 and are currently in the 6000 series. Not all squares are active. A common cause of squares becoming inactive has been through street closing and combining squares. When the squares are combined usually the lower square number is killed and the higher square number is used for the combined square. For example if squares 1 and 2 are combined, square 1 is killed and the combination becomes square 2. Spatial locations: Each Square is an Island, alone unto itself. There is not now, and has never been, any citywide Survey Coordinate System in D.C. Most squares are unrelated to other Squares by “Measured.” They are related by Record. Street width is approximate. You cannot rely on the published official street widths to set up property lines or determine right-of-way. There is digital scan information available from DDOT regarding Right-of-Way. Some Squares are divided by streets. That is, the same Square continues on the other side of the street. Since there is no citywide Survey Coordinate System, squares were placed in their approximate location. This process is known as “best fit”.
The Office of Campaign Finance (OCF), in cooperation with OCTO, is pleased to publicly share election campaign expenditures data. The Campaign Finance Office is charged with administering and enforcing the District of Columbia laws pertaining to campaign finance operations, lobbying activities, conflict of interest matters, the ethical conduct of public officials, and constituent service and statehood fund programs. OCF provides easy access to all contributions and expenditures reported from 2003, through the current reporting period. Because the system is updated on a daily basis, you may be able to retrieve data received by OCF after the latest reporting period. This data is as reported, but may not be complete. Visit the ocf.dc.gov for more information. Users may also visit the Candidate Campaign Contributions web application to find financial data by zip codes.
This file contains posted weights and clearances for vehicle bridges in the District.
A regional dataset containing E. coli monitoring sampling results collected along the Potomac and Anacostia Rivers, in response to the January 2026 Potomac Interceptor Collapse. Each data provider retains responsibility for its own data and submits to this compilation dataset voluntarily. Check the Source field to identify the data provider: DC Department of Energy & Environment (DOEE) Maryland Department of the Environment (MDE) Virginia Deparment of Environmental Quality (VADEQ) DC Water Potomac Riverkeepers Network (PRK) with University of Maryland (UMD) Contact individual data providers to learn more about their data (i.e., collection, quality assurance, terms of use, etc.). Questions regarding DC Department of Energy & Environment sampling sites can be directed to pi.data@dc.gov.
Potomac Interceptor E. coli Sample Results
Closed Circuit TV Street Cameras locations. The dataset contains locations and attributes of CCTV and other cameras, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. DC DMV issues vehicle registration reciprocity privileges to people who are permanent residents in other jurisdictions, but who, by law, are allowed reciprocal residency privileges in the District. Reciprocity privileges are also issued to some District residents who are unable to obtain District tags. Reciprocity privileges are available to Full-time students attending a college or university in the District of Columbia Member of Congress or personal staff members of a member of Congress (and District resident spouses and dependents) Presidential appointees US military personnel on active duty Diplomats Part-time District residents District residents with take home company vehicles If you qualify for reciprocity and you live on a street zoned for residential parking, you may obtain a Residential Parking Permit (RPP) for your vehicle for an additional fee. Reciprocity does not give you parking privileges in restricted areas. Streets zoned for residential parking will have street signs indicating a 2-hour parking limit for vehicles without a permit. To qualify for a reciprocity permit, you must meet the criteria for your category, present the documents required for your category) at a DC DMV service center, and pay applicable permit fees. You can also apply for an RPP if you need one.
A table with tax rate codes for the Integrated Tax System Public Extract (ITSPE) data layers. The ITS database also processes notices and tax bills. Public extract of the database used for sending tax bills, also known as tax assessment roll. ITS stores comprehensive tax information such as ownership, mailing addresses etc., of record lots, tax lots, parcels, condominiums, and federally owned lands such as reservations and appropriations.
Certified businesses enterprises in the District of Columbia as identified by the DC Department of Small and Local Business. A Certified Business Enterprise (CBE) is a business that is headquartered in the District of Columbia and has been certified by the Department of Small and Local Business Development (DSLBD). Businesses with CBE certification receive preferred procurement and contracting opportunities.
SubBlock represent the near-full extent of our centerline network (only driveways are excluded). SubBlock is the finest grained, 'base' segments from which all other segmentation patterns can be constructed (including Blocks). SubBlock is the original source features for our DDOT Street Centerlines data. Road types include streets, Alleys, Ramps, Service Roads, and Trails. Previously called Roadway Segments. For more information please visit DDOT's wiki page.
DDOT's Urban Forestry Division (UFD) is the primary steward of Washington DC's ~175,000 public trees and has a mission of keeping this resource healthy, safe, & growing. Trees in the city are critical to our well-being. Visit trees.dc.gov for more information.
This file contains line data for bridges from AASHTO Bridge Management database.
These services help with money management, financial planning, and insurance education. These services are not all dementia-specific but are inclusive of those living with dementia or who are planning for future memory loss. We include larger organizations that provide these services but have not included individual/private financial planners.
Wells are defined by 21 DCMR Chapter 18 as any test hole, shaft, or soil excavation created by any means including, but not limited to, drilling, coring, boring, washing, driving, digging, or jetting, for purposes including, but not limited to, locating, testing, diverting, artificially recharging, or withdrawing fluids, or for the purpose of underground injection. The Department of Energy & Environment's Regulatory Review Division reviews permit applications to install wells in private and public space through the Department of Licensing and Consumer Protection and the District Department of Transportation.
The data includes the five condition categories, excellent, good, fair, poor and failed. The data reflects a sidewalk condition index score ranging from 0 to 11. The higher the value, the better the sidewalk condition. The data also includes the primary and secondary material type of the sidewalk. It also entails the 8 most common conditions and the value expressed numerically.
Record lots are defined by the Department of Buildings (DOB) – Office of the Surveyor (OS) - DC Surveyor. They are official, platted, recorded subdivision lots created by the D.C Surveyor’s Office in compliance with the Subdivision Ordinance of the District of Columbia (must have public street frontage etc). Typically, these lots are numbered 1 through 799 with no number being used more than once in a Square. Exceptions to this rule: When the 1-799 range has been exhausted within a square, the Surveyor’s Office assigns numbers from 1200 or may even use 8000 and above For reasons unknown, 42 Squares have record lot numbers greater than 799 but less than 1200 Additionally, in most case scenario’s, a piece of property must be a Record Lot before a building permit will be issued for that site in the District of Columbia, and all proposed Record Lots are carefully reviewed by Zoning Administration officials for compliance with the city’s Zoning Ordinances. Other agencies that review new record lots besides OS are Office of Zoning, Office of Planning, the Dept. of Public Works, Historic Preservation and DDOT. Record lots are defined only when requested by property owners, normally when they are seeking a building permit. Record lots are recorded in Plat Books and Subdivision Books in the Office of the Surveyor. These documents are bound volumes of historical representations of the locations of property lines, and they include record dimensions, though typically no bearings of lines. These lots are located within squares, which usually correspond to one or two city blocks. Certain record lots can also be classified as “of-lots”. An "Of-Lot" is the D.C. Surveyor’s Office term for describing “Remaining/Part of Original Lot X” In the record lot feature class, if a domain value of 1 resides in the “OF_LOT” field, you can assume that at one time the original lot was modified. Typically, any of these of-lots will also have a tax lot overlaying them since it is a piece or remainder of a Record Lot.
These resources help support personal safety or help to improve home safety for persons living with dementia or memory loss. The services listed are specific to older adults and are generally inclusive of persons with dementia while not being explicitly dementia specific service.
These are lines beyond which property owners or others have no legal or vested rights to extend a building or any part thereof without approval of the proper authorities; ordinarily a line of demarcation between public and private property, but also applied to a building restriction line, when recorded in the records of the Surveyor.
To better enforce and regulate nuisance odor concerns, DOEE requires certain facilities known to produce odors to develop an Odor Control Plan (OCP) subject to DOEE approval. This data set is available to show the status of OCPs and provide access to the submitted plans. It includes information on the facilities that have submitted plans, the status of approval or disapproval, and links to the plans.
These are lands still within the District of Columbia that has never been subdivided into either Record or Tax Lots through the two offices that manage land records (OS & RPTA), this land is referred to as Parcels, expressed as fractions (Ex Parcel 117/36). In this example, the number “36” would be the 36th out conveyance from original Parcel 117. The tracking of parcels was started in 1905 when, by Act of Congress, all the District’s unsubdivided properties which were mostly rural farms at the time were given parcel numbers. Their boundaries were also depicted (in many cases approximated), in large books in DCRA's Office of the Surveyor. Until the late 1960s, building permits were routinely issued by the city for new construction on Parcels, but today all Parcels, like Tax Lots, must be converted into subdivision Lots of Record before permits will be issued for exterior work. Parcels are only found in the old “County of Washington,” north of Florida Ave and east of the Anacostia River. There are no Parcels found within the original city limits or Georgetown. Parcels are not in Squares. There are examples where parcel land may be physically located in the middle of a city Square, but Parcels are not considered part of a Square until they are duly subdivided by the D.C. Surveyor’s Office.
Roads and Highways manages intersections, however they are not singular points; RH creates a series of points - one for each intersecting road at that intersection. For DDOT, it is more useful to have a single intersection point representing the intersection. Through a custom DDOT script,the series of intersection points is reduced into a single representative point. For more information please visit DDOT's wiki page.
These resources aid individuals who need help with medications. These resources are not necessarily dementia-specific but can be particularly helpful for individuals or caregivers in the setting of dementia or memory loss.
These resources offer support to individuals with dementia and their families and/or caregivers, including assistance with education, connection to resources, coordination of services, and coordination of healthcare.
Case Management Care Planning and Care Navigation
The dataset contains locations and attributes of owner lines with dimensions. The tax information (attribution) comes from the Office of Tax and Revenue's Public Extract file. The creation of this layer is automated, occurs weekly, and uses the most currently available tax information. The date of the extract can be found in the EXTRACTDAT field in this layer.
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. DMV convictions
Data source is the Office of Tax and Revenue’s Computer-Assisted Mass Appraisal (CAMA) system. The CAMA system is used by the Assessment Division (AD) within the Real Property Tax Administration to value real estate for ad valorem real property tax purposes. The intent of this data is to provide a sale history for active properties listed among the District of Columbia’s real property tax assessment roll. This data is updated daily. The AD constantly maintains sale data, adding new data and updating existing data. Daily updates represent a “snapshot” at the time the data was extracted from the CAMA system, and data is always subject to change.
Computer Assisted Mass Appraisal - Condominium
Blockface Segments are unbroken sections of the curb. A blockface can be made up of several subblocks, or just one subblock. There are blockfaces on both sides of the road, each dependent on an unbroken length of curb. For more information please visit DDOT's wiki page
These resources offer non-emergency transportation to medical appointments, grocery stores, social activities, etc., and may be government or private services. This list includes programs supported through District funding for older adults, as well as services that offer support inclusive to individuals with dementia. Some of these services are available to all older adults, while others are restricted to members of organizations, such as the DC Villages. This resource guide does not include private rideshare companies such as Lyft, Uber, or Go Go Grandparent.
The DC Smart Street Lighting Project will modernize streetlights in the District of Columbia by converting them to LED technology with remote monitoring and control capabilities. LEDs better direct light onto the road, sidewalks, and trails, all helping to improve safety and advance the District’s Vision Zero goals. The project increases the city’s sustainability efforts by reducing streetlight energy consumption by more than 50 percent, eliminating 38,000 tons of greenhouse gas emissions each year.
DC's Real Property Tax Administration defines assessment and taxation lots, often referred to as A&T lots or simply tax lots. These lots are strictly for real estate taxation purposes and normally defined under two circumstances: When property owners ask for their real property tax bills to be consolidated, after they have bought several contiguous record lots; this is called a combine; When part of a record lot is sold, but no new record lot is yet defined; this is called a split request. Tax lots are not determined by survey, and are therefore not official lots in the same way record lots are. These lots are normally numbered between 800 and 1999within a square to differentiate them from record lots on the property tax maps. When a tax lot is established by RPTA, an A&T Plat is generated by RPTA and forwarded to the surveyor’s office. These A&T Plats are not reviewed but simply filed by the Surveyor; they do not comply with the standards required of subdivision plats, and are not recorded. Tax Lots are not normally acceptable when applying for building permits and must be converted to Record Lots through the normal subdivision process involving the D.C. Surveyor’s Office before permits will be issued. The only exception is if the lot does not face a public street. Furthermore, at the time of their creation and platting, there is no review made of tax lots for compliance with D.C. Zoning, Subdivisions or any other ordinances. These lots are simply pieces of property, owned by somebody, described in deeds, for which tax bills are sent and real estate taxes are collected by the city. Some Record Lots also function in this capacity. Geographically, tax lots typically overlay layers such as record lots or sometimes reservations. There are known instances where tax lots do not overlay these types of layers. Up until approximately 1972, A&T lots were only created by the Tax Assessor out of lands that had been previously Record Lots at some point in their history. For a short period of time in the early to mid 1970’s, a decision was made to start eliminating fractional parcels (see definition below) and make them all into A&T lots. The intent was to do away with Parcels altogether and have all properties in the city be either tax lots or record lots. By doing this, they converted unsubdivided parcels into A&T lots where no underlying record lot exists. There is often little or no historical source information about these types of transactions therefore vectorizing them often required vast amounts of research.
Community-based adult day programs provide daily care and social connection for older adults living with cognitive impairment and dementia. These services can be an important part of an overall care plan for those living with dementia as they provide daily connection opportunities as well as relief for caregivers. Respite care provides a break for caregivers to allow them to take time to attend to personal matters, while also providing a safe, caring environment for their loved ones to remain cared for during this time. There may be short term or limited respite care available through the Department of Aging and Community Living (DACL) including grants to support caregivers. The best way to learn about these programs is to connect with the DACL or your local lead agency. Lastly, respite care options exist through many private agencies.
This line layer was created from the GTFS data feeds from the Washington D.C. Metropolitan Area Transportation Authority (WMATA) to represent the new WMATA bus transit routes for the Better Bus Network Redesign(BBNR). Lines in this layer represent individual bus routes; they were generalized from the GTFS format where lines depicted individual services. On June 29, 2025, WMATA implemented a brand new Metrobus Network – known as Better Bus. Read more about this update from BBNR info page. Each line represents the route that a specific bus follows during its daily service. The unique field, shape_id, is derived from the GTFS to identify the route, while route_id (route_shortname), direction, and variation fields use familiar letter or number designations for buses, with distinct IDs for each route. This layer was developed as part of the WMATA Better Bus Network Redesign and will be updated as necessary to reflect changes in the transit system. Learn more about GTFS feeds at wmata.com/about/developers. The District Department of Transportation (DDOT) has added DC attribution for Roadway Blocks and Roadway Subblocks to the Metro Bus Stop dataset. Use BLOCKKEY, SUBBLOCKKEY, and ROUTEID to relate back to DC government data. Learn more about DDOT's roadway centerline data at opendata.dc.gov/pages/roadway-centerlines.
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. This dataset contains DMV business customer information. Typically DMV business customers are entities that can carry out customer transactions, on behalf of the DMV, to obtain various approved services such as tags and titling of vehicles. These entities could be dealerships, registered vehicle owners, title holders, government agencies and so forth.
These data were generated as part of the 'Apply Remote Sensing Methods to Map Tree Species and Tree Health for Species of Management Concern in ACAD and KAWW' Natural Resource Condition Assessment project. The zipped file includes data of dominant species maps, reflectance-based tree species and health maps, and tree crown health maps.
Apply Remote Sensing Methods to Map Tree Species and Tree Health for Species of Management Concern in ACAD and KAWW Dataset
Air right lots reflect a party’s right to construct an improvement above an existing area of land that is not owned by the constructor. They are a type of development right in real estate referring to the empty space about a property. These tax lot numbers start at 7000. There are approximately 704 air rights lots. Non-contiguous Air Rights Lots numbered in 8000 series can either be District owned Multifamily rental units or Existing Development Mixed (residential and commercial). Multifamily 8000 series lots can be proposed development projects that are inclusive of the Mayor’s Office Affordable/Public Housing Initiatives. Additionally, they can either be development sites that are owned by the District and the site is leased to developer. Due to financing and legal requirements, each set of government funded units are required to have separate parcel ID’s (SSL’s). All the units are rentals, none of the units will be for sale. Existing Development Mixed Use 8000 series lots are residential owner(s) that own both residential and commercial portions. The Lot split is done to ensure each party pays the appropriate real estate taxes assessed to each specific use. There is a master covenant lease outlining property access-rights-use between residential and commercial owner and lease holders. There is also a master lease related to the commercial space where the residential owner is the lease holder.
The resources listed here are organizations that provide in-home healthcare for homebound older adults and individuals with advanced illness in need of hospice services or home-based palliative care. Additional resources listed in this section include community-based legal services that support homebound older adults. This type of resource may be necessary so that homebound older adults can complete legal documents to uphold their medical wishes and establish legal surrogates in the case of memory loss or dementia.
Healthcare for Homebound Older Adults and End of Life Care
These resources provide companionship services and in-home assistance with personal care tasks, known as activities of daily living (ADLs), which include support for dressing, bathing, toileting, transferring/mobility, and eating. Some of these organizations also help with instrumental activities of daily living (IADLs) such as light housework or food preparation, i.e. “homemaker” services. (For organizations that provide these services also see the section: Home-Based Services: Homemaker Services). These resources are all dementia-inclusive and are available to individuals with dementia or other physical limitations.
This point layer was created from the GTFS data feeds from the Washington D.C. Metropolitan Area Transportation Authority (WMATA) to represent the new WMATA bus transit stops for the Better Bus Network Redesign(BBNR). Points in this layer represent individual bus stops; they were generalized from the GTFS format where stops depicted individual services. On June 29, 2025, WMATA implemented a brand new Metrobus Network – known as Better Bus. Each point in this layer represents a bus stop served by the routes, with the stop sequence field indicating the order of stops based on the route's travel direction. This feature class was generated using a relational query on the trip_id, shape_id fields from the trip.txt and stop_times.txt files from the GTFS. The unique identifier for each stop is designated by the REG_ID (Regional ID), a field created by WMATA to assign a recognizable number to each stop, ensuring that every stop has a distinct ID. Learn more about GTFS feeds at wmata.com/about/developers. The District Department of Transportation (DDOT) has added DC attribution for Roadway Blocks and Roadway Subblocks. Use BLOCKKEY, SUBBLOCKKEY, and ROUTEID to relate back to DC government data. Learn more about DDOT's roadway centerline data at opendata.dc.gov/pages/roadway-centerlines.
This dataset contains Historic Landmarks (by structure) officially designated by the District of Columbia. This is a consolidated collection of structures with historical significance within the District of Columbia as listed in the "District of Columbia Inventory of Historic Sights". It contains the locations and attributes of buildings, statues, bridges, forts, fountains, & memorials of historical worth. Additional datasets are available of Historic Districts. The same records in this polygon-format dataset are also available in a point-format dataset.
District addresses for the District Land. The dataset contains of addresses for the District land (Owned, Operated, and Maintained), created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. Databases researched by the DC Office of the Chief Technology Officer (OCTO) identified DC Agency locations and DC GIS staff geo-processed the data.
The Clean and Affordable Energy Act of 2008 established that all private buildings over 50,000 gross square feet within the District of Columbia, including multifamily residences, must annually measure and disclose their energy and water consumption to the Department of Energy and Environment (DOEE). Benchmarking is defined as tracking a building’s energy and water use and using a standard metric to compare the building’s performance against past performance and to its peers nationwide. These comparisons have been shown to drive energy efficiency upgrades and increase occupancy rates and property values. The District of Columbia has chosen U.S. EPA’s free, industry-standard ENERGY STAR® Portfolio Manager® tool for benchmarking and reporting. DDOE is required to publicly disclose the ENERGY STAR® Benchmarking results for each publicly or privately owned building that is subject to the benchmarking law, beginning with the 2nd year of benchmarking data for that building. For more information, see https://doee.dc.gov/energybenchmarking.
These resources include some of the opportunities to connect with caregivers or individuals living with dementia in the District. Social connection and engagement are critical to maintain a high quality of life independent of a diagnosis with dementia. Services listed in this section are core resources with goals to promote wellness, engagement, and connection. In addition to social connection opportunities, support groups for individuals with dementia or memory loss are listed here as well as many consider themselves more of a “social club” than a support group.
Social Connection Engagement and Networking
Appropriation points. U.S Appropriations are lands set aside at the time of the original founding and platting of the city for use by the U.S. Federal Government. The White House, for instance, Treasury Building, Ellipse and LaFayette Park all sit on Appropriation No. 1. D.C General Hospital is on Appropriation No.13 (with the consent of the Federal Government). Appropriations are often confused with U.S Reservations but the two terms are not interchangeable. There are 17 U.S Appropriations in Washington, D.C., all of which are located within the limits of the Original City and, by definition; there can never be any more. Created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. U.S Appropriations are lands set aside at the time of the original founding and platting of the city for use by the U.S. Federal Government.
Historic preservation easements are voluntary legal agreements, typically in the form of a deed, that protect a historic property or cultural resource by placing restrictions on the development of, or changes to it. Under the terms of the easement, the property owner grants a portion of, or interest in the property to an organization whose mission includes historic preservation. Donation of an easement to preserve a certified historic structure or historically important land area qualifies as a charitable contribution for federal income and estate tax purposes. Under the DC Uniform Conservation Easement Act of 1986, as amended in 1993 (DC Official Code Sec. 42-202.01), when a conservation easement has been registered with the District, written consent of the easement holder is required before the issuance of a construction permit for exterior work on the property or recordation of a land subdivision for its lot. Easements are registered by presenting proof of recordation to the Historic Preservation Office in the DC Office of Planning. <P /> <P />
Computer Assisted Mass Appraisal - Residential
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. On behalf of the District Department of Transportation (DDOT), which regulates parking in the District, DC DMV issues three types of disability placards or permits, one-week permits, temporary placards, and long-term placards, all described below. One-Week Permits You can get a one-week disability permit if you only require the placard for a week or less (or you have a visitor who requires it), you have a short-term disability, or your vehicle with disability tags is being repaired. For a one-week permit, you do not need a doctor’s certification. The one-week permit is not renewable within a one-year period. Temporary Placards You can get a temporary disability placard if you have a physical condition that substantially impairs your mobility that is expected to last no longer than 8 years. Your medical practitioner must certify the application and indicate the expected length of your disability. If you find you need your disabled privileges longer, you must submit a new application with a medical practitioner's certification. Long-Term Placards You can get a long-term disability if you have a long-term disability. The list of qualifying disabilities is included on the application for the placard. You do not need a medical practitioner's certification if you have an obvious missing lower extremity or you use a motorized wheelchair. The long-term placard is valid up to 8 years to coincide with the expiration of your driver license or identification card. To renew it, you must submit a new application with a medical practitioner's certification. Temporary and long-term placards expire on the last day of the month and year indicated on the placard. Placards or permits should be hung from the rearview mirror while the vehicle is parked in a space authorized for the disabled and must be displayed and readable from the front windshield. They must be removed from the rearview mirror while the vehicle is in motion.
The relationship between a property and an address is many-to-many. In DC a SSL (Square, Suffix, Lot) is used to identify a property. One SSL can have multiple addresses located on it. This often includes garden-style apartment complexes as well as corner buildings with separate addresses facing each adjacent street. One address can also sit upon multiple SSLs. One single family residence can sit upon multiple lots. The cross reference table contains the many-to-many relationship between address IDs and SSLs. [A small percentage of addresses do not have an associated SSL (such as metro entrances or many addresses on Federal property.] Use this cross reference table to relate the District's address points in the Master Address Repository (MAR) with the SSLs and vice versa.
Address and Square Suffix Lot Cross Reference
The District of Columbia's IT STaR2 contract vehicle allows all the District's public-sector organizations to hire contractors. It streamlines and standardizes IT procurement, utilizing an open network of IT staffing suppliers to meet the diverse IT needs of the District. This provides a one-stop shop and contract processes to quickly engage needed resources for DC agency programs, and provide requisite support for the duration of the contract position. Per Exhibit G of contract CW95481 between CAI and the District of Columbia, a report is requireed which will provide a list of all engaged Resources with Prime Contractor or Subcontractor information, as applicable, for publication to the District’s public data website. For each Resource, this report shall identify (at a minimum) vendor of Resource, Purchase Order#, and the hourly rate being paid to the Resource.
An ABCA moratorium zone is a defined area in DC where the Alcoholic Beverage and Cannabis Administration Board has: Limited the number of alcoholic beverage licenses issued; Declared a moratorium on the issuance of alcoholic beverage licenses of any class; Declared a moratorium on the issuance of amended licenses that constitute a substantial change; and/or Declared a moratorium to limit the sale of products that may be sold by off-premises retailer’s licenses class A and B. Any group with standing may make a request to the Board to issue limitations or to declare a moratorium, pursuant to the District of Columbia Official Code Title 25 Section 351, as found in the ABCA Laws and Regulations. Any moratorium issued by the Board will not apply to existing licenses. There are several neighborhood moratoriums in effect in DC: Adams Morgan Moratorium Zone Glover Park Moratorium Zone Langdon Park Moratorium Zone North Shaw Moratorium Zone Complete details on moratoriums may be reviewed in both DC Official Code Title 25 Chapter 3 and DC Municipal Regulations Title 23 Section 303, as found in the ABCA Laws and Regulations.
These resources help with light housework, errands, tasks, or yardwork to help individuals living with dementia remain in their homes. They are often called “homemaker” services. This list does not include many private housekeeping, landscaping, or handyman companies that may not have specific training to meet the needs of older adults. The services included in this list specifically serve local older adults and are inclusive of those with memory loss or dementia. There are several types of providers who can connect older adult to these services including DC Villages, District Organizations (i.e., Lead Agencies), and Private Agencies."
This section focuses on food and nutrition services that are dementia-specific or dementia-inclusive. Older adults in the District can obtain nutrition education and counseling specific to individuals with memory loss or dementia, as well as limited supplies of nutritional supplements. These services are provided by the District Lead Agencies on behalf of the Department of Aging and Community Living (DACL). Additionally, Lead Agencies partner with community organizations to provide meal delivery services throughout the District. These services are available to older adults with or without dementia. It is of note that some services may have income restrictions.
A layer showing the District of Columbia government related structures. The dataset contains polygons representing District Government related structures on Government property created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) using the Department of Energy and Environment’s Unique Building Identifier (UBID) data. The tax assessment roll public extract (ITSPE) is used for assessment and property analysis, to send property tax bills and notices, and stores comprehensive tax information such as ownership, mailing addresses, non-contiguous Air Rights lots (Multifamily or Development), Air Rights lots, possessory interest lots, record lots, tax lots, parcels, condominiums, and federally owned lands such as reservations and appropriations. The linkage from the Vector Property layers to this database is SSL (Square, Suffix, and Lot). The UBID data was originally created by spatially joining the 2019 building footprints published in DC Open Data with the Common Ownership Lots. The UBIDs were coded using US DOE’s Implementation code. Search for UBID and ITSPE in Open Data DC for individual documentation.
These resources include local and online services to guide you in advance care planning conversations to document your health care preferences and select a health care proxy / health care power of attorney. Resources listed also include legal clinics and community resources that provide information about and assistance with guardianship, conservatorship, and estate documents (wills, trusts, estate planning).
This dataset contains Historic Landmarks (by structure) officially designated by the District of Columbia. This is a consolidated collection of structures with historical significance within the District of Columbia as listed in the "District of Columbia Inventory of Historic Sights". It contains the SITES and attributes of buildings, statues, bridges, forts, fountains, & memorials of historical worth. These sites in general are the lot or lots that a structure or other designation sits on.
Affordable housing production and preservation projects are managed by the Department of Housing and Community Development (DHCD), the Deputy Mayor for Planning and Economic Development (DMPED), the DC Housing Authority, the DC Housing Finance Agency and DC's Inclusionary Zoning program. This dataset comprehensively covers affordable housing projects which started (i.e. reached financial closing and/or started construction) or completed since January of 2015. The data includes affordable housing projects (production and preservation, rental and for-sale) which were subsidized by DMPED, DHCD, DCHFA, or DCHA, and those which were produced as a result of Planned Unit Development (PUD) proffers or Inclusionary Zoning (IZ) requirements.
For a city, street blocks are a very common way in which to organize and relate work (e.g. 'I need to fix a pothole on the 1600 Block of Pennsylvania Ave'). Although driveways or alleys may intersect streets, this representation requires that the segment remain unbroken. Road types include streets. Previously Called Street Segments. Note that there are no from/to address fields. We will not be maintaining them in our data. There also will be no generating a 'streetname' list. For more information please visit DDOT's wiki page.
The District of Columbia's IT STaR2 contract vehicle allows all the District's public-sector organizations to hire contractors. It streamlines and standardizes IT procurement, utilizing an open network of IT staffing suppliers to meet the diverse IT needs of the District. This provides a one-stop shop and contract processes to quickly engage needed resources for DC agency programs, and provide requisite support for the duration of the contract position. Per Exhibit G of contract CW95481 between CAI and the District of Columbia, a report is required which will provide a list of open requirements available for candidate submittal via the VMS.
On this site the District of Columbia government shares opportunities to explore hundreds of datasets through direct downloads, interactive applications and developer resources through APIs. Engage with the District through government open data. Apps & Maps Discover data in DC's urban landscape with these web maps & apps. Data Stories Opportunities for all learners to read how DC is using data for operations, education and encouraging civic participation. Dashboards Link today's data with yesterday and see patterns with these interactive web visualizations. Data Catalog Browse the data, download it as a file, analyze it with your tools, or build apps using our APIs.
This file contains line data for pedestrian and rail bridges from AASHTO Bridge Management database.
The Regimes are how Office of Tax and Revenue (OTR) quantifies units in a given condo development, grouping of condos. A condo regime number is assigned to each residential condo application or Article of Confederation regardless of how many buildings there are at any one site. The regime number starts with a 1, 2, or 3 depending upon where the condo is located and where they fall in the assessment process of Real Property Tax Assessment (RPTA). All numbers after the first are consecutive. RPTA maintains the master list of Regime numbers for residential properties. Commercial condos are not associated with a Regime number. Condo lots are individual lots for each condominium. The lot numbers normally range from 2000-6999. These condo lots are not geographically defined other than being within a air rights, record, tax or a combination of lots that has one or more condo buildings within it.
Mayor Muriel Bowser established the Bus Priority Program to improve bus speeds and reliability for riders across the District, whether on Metrobus, DC Circulator, or commuter buses. The bus network provides vital connections to jobs, schools, healthcare, and other destinations. By improving bus service, the District Department of Transportation (DDOT) is improving mobility and access to opportunities for District residents, workers, and visitors. Learn more about District Department of Transportation Bus Priority projects. Email: buspriority@dc.gov. This site includes current, future, and completed project information, as well as how to provide feedback on bus priority projects.
Computer Assisted Mass Appraisal - Commercial
The BEPS Program was created by Title III of the?Clean Energy DC Omnibus Act of 2018. The BEPS is a minimum threshold of energy performance that will be no lower than the local median?ENERGY STAR?score by property type (or equivalent metric). The standards were created to drive energy performance in existing buildings to help meet the energy and climate goals of the?Sustainable DC?plan — to reduce greenhouse gas emissions and energy consumption by 50% by 2032. DOEE established the first set of Standards on January 1, 2021. Standards will then be set every 6 years, creating BEPS Periods (BEPS Period 1, BEPS Period 2, etc.). The 2021 Building Energy Performance Standards and a Guide to the 2021 BEPS are available for viewing on DOEE’s website. To improve transparency and help building owners understand how their building performs relative to the BEPS, DOEE is publishing this BEPS Disclosure that compares a building’s benchmarking data with the BEPS and provides an estimate of the building’s distance from the standard and estimated performance requirement. Please note that this dataset is based on information currently available to DOEE using calendar year 2019 benchmarking data provided by the building owner. Some buildings are still being evaluated and therefore have been designated as “Under Review” in this dataset. Building owners that believe their 2019 calendar year data is incorrect should contact the Benchmarking Help Center (info.benchmark@dc.gov). Additionally, buildings that meet certain criteria may request a variance from the standards by submitting a variance request form on the DOEE website.
The Office of Campaign Finance (OCF) is pleased to publicly share election campaign contribution data. The Campaign Finance Office is charged with administering and enforcing the District of Columbia laws pertaining to campaign finance operations, lobbying activities, conflict of interest matters, the ethical conduct of public officials, and constituent service and statehood fund programs. OCF provides easy access to all contributions and expenditures reported from 2003, through the current reporting period. Because the system is updated on a daily basis, you may be able to retrieve data received by OCF after the latest reporting period. This data is as reported, but may not be complete. Visit the http://ocf.dc.gov for more information. Users may also visit the Candidate Campaign Contributions web application to find financial data by zip codes.
For the purposes of the map, a Truck is defined as a vehicle with a gross vehicle weight rating greater than 26,000 pounds with a carrying capacity of more than 1 and ¼ ton. For the purposes of the map, a Bus is defined as a vehicle with a carrying capacity of greater than 15 passengers. This does not include WMATA or Circulator buses. A through route, or primary route, signifies a roadway that may be used by trucks and buses that have neither an origin or destination within the city or on the route. A non-through route (all other roadways not highlighted in blue), signifies a roadway that that may be used by trucks or buses only for the purpose of making a delivery or pickup of passengers or freight. Trucks and buses should only use a non-through route at the beginning or end of a trip, when traveling between their origin/destination and a through route.
Intersection Approach Segments are short segments of the route that approach an intersection, in other words, a short section of the road leading up to an intersection. Roads and Highways manages intersections, however they are not singular points; RH creates a series of points - one for each intersecting road at that intersection. For DDOT, it is more useful to have a single intersection point representing the intersection. Through a custom DDOT script,the series of intersection points is reduced into a single representative point. For more information please visit DDOT's wiki page.
This dataset contains Historic Districts officially designated by the District of Columbia. Additional data sets are also available providing information on (1) historic landmarks in the District of Columbia.
All applicants for a Basic Business License operating from a residential location the District of Columbia must provide a Home Occupation (HOP) for the premise address from which the business activity is conducted in order to demonstrate the activity does not conflict with building and zoning codes. A home occupation is a business, profession or other economic activity conducted full- or part-time in the principal residence of the person conducting the business. This permit is required for operating a business from a residential home.
Alley widths, street frontages, were captured during the vector property effort and reside in their own feature class. 99% of the time, these features should be coincident with the square boundary. The exceptions to this are internal alley’s that might be overlaid by a tax lot. They were captured largely to enable continuity within each square. Alley Polygon does not exist. They could be created with this data by using an automated routine which searches linear feature of the Record, Tax and Parcel Lots feature classes where Line_Classification = 3, 4 and 6, then turning these selected lines into poly’s, another method would be clipping a square boundary with the tax and record lots.
The Mowing Operations dataset provides detailed information on scheduled mowing operations across District-managed properties. It includes data fields such as mowing dates, mowing frequency, and specific location identifiers like property names and addresses. The dataset also categorizes mowing areas by agency or property type—such as schools, parks, and government facilities—and includes timestamps showing the last time the information was updated. Developed to promote transparency and community engagement, the dataset allows residents to see when and where mowing services are planned throughout the season.
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. DC DMV offers 3 types of personalized vehicle tags: Standard (for automobiles): May contain up to 7 letters, the numbers 1 through 9, and/or spaces Motorcycle: May contain up to 5 letters, the numbers 1 through 9, and/or spaces Disability: May contain up to 5 letters, the numbers 1 through 9, and/or spaces No punctuation or symbols are permitted on DC DMV personalized tags. DC DMV reserves the right to reject any combination of letters or numbers that may be deemed offensive. Please review your personalized tag order. Once you accept this order, you cannot change or cancel it. A non-refundable reservation fee of $100 is due when the order is placed. A personalized tag request may take up to 8 weeks to fulfill. You will receive a letter in the mail when your personalized tag is available for pick-up. DC DMV will email you if you have provided your email address. You—if you are the registered owner of the vehicle—can request personalized tags online, by mail, or in person. NOTE: Per District law, personalized tags cannot be issued to vehicles registered to business or government entities.
District Government Land Line Dimensions. A layer showing District of Columbia government related properties (owned, operated, and or managed) to be used by many DC Government agencies, private companies and the public. It supports the daily business process of District agencies that originate and manage land records. Transfers of Jurisdiction (TOJ) are also in this layer. This map should not be considered comprehensive as District agencies continuously work to update properties as transactions occur.
District Government Land Line Dimensions
This layer is derived from the Common Ownership Lots and represents property transactions as they’ve occurred since the implementation of the Vector Property Mapping program in September 2006. A property transaction entails new geometry (split/combination of Lot(s) or property type conversion (from Air Rights, Record, or Tax Lots to Condo lots). The layer contains locations and attributes of archived features (inactive lots – dead lots) and corresponds with Office of Tax and Revenue's Public Extract files (ITSPE). It occurs weekly for the current calendar year and geometry updated when a transaction occurs.
April 1, 2025: data feeds from DMV are currently offline while the agency works to migrate reporting systems. The most recent data available is from December 2024. Open Data DC is working with DMV to restore data feeds as soon as possible. This dataset contains the active driver license information. The dataset only includes customer age, type of license( meaning noncommercial license or commercial license), permit type ( meaning learners, provisional, temporary, and regular), if it is real-id or not validated license, license expiration date, and status of the license.