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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

    Other Data Resources

    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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