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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Built Units Since 2010

Metadata Updated: March 29, 2026

Permit records from the City of Seattle permitting system for building permits that create or demolish housing units. Records begin from the beginning of the previous decade from the current quarter year.

The permits in this layer are those that have been completed. This data does not contain records for those permits that were issued but were not completed so are therefore not comparable to statistics that report permit issuance.

Each record represents the number of units added or demolished for each housing type in the project. Therefore a single building permit may appear multiple times if there are a mix of unit types in the project.

Housing unit types reflect the unit types regulated by the building codes and change through time. There has been no attempt to standardize these types and therefore reflect the unit types that existed at the time the permit was issued.

There may be multiple permits at any given address.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

Downloads & Resources

Dates

Metadata Created Date September 2, 2022
Metadata Updated Date March 29, 2026

Metadata Source

Harvested from Seattle JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date September 2, 2022
Metadata Updated Date March 29, 2026
Publisher City of Seattle ArcGIS Online
Maintainer
Identifier https://www.arcgis.com/home/item.html?id=2e521b98e9a84934be2815b9e15f3ff5&sublayer=0
Data First Published 2020-01-05
Data Last Modified 2026-03-25
Category geospatial
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://cos-data.seattle.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id f6ec3e11-82fe-428f-ac50-de1456240271
Harvest Source Id f61de7a2-69cf-40a9-a1bc-dd9edb8f3fe5
Harvest Source Title Seattle JSON
Homepage URL https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::built-units-since-2010
License https://opendatacommons.org/licenses/pddl/summary
Metadata Type geospatial
Old Spatial -122.4173,47.4938,-122.2427,47.7355
Source Datajson Identifier True
Source Hash 374d8653dc61ae2db40c4ff97e4db8b6f26c14d6183babc0bc9fae4c3d2efc0e
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -122.4173, 47.4938, -122.4173, 47.7355, -122.2427, 47.7355, -122.2427, 47.4938, -122.4173, 47.4938}

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