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

    Common Ownership Lots

    Metadata Updated: February 11, 2026

    The common ownership lots is a single polygon layer that is built from various polygon feature classes of the District's Vector Property Mapping database including the below. It represents all lands that are outside right-of-way.

    • Record Lots
    • Tax Lots
    • Parcel Lots
    • Reservation Lots
    • Air Rights Lots

    All of which are found separately on https://opendata.dc.gov. The Office of Tax and Revenue maintains a database known as Information Tax System (ITS) that contains the accounts for the real property taxes. ITS records reference record lots, tax lots, parcels, condominiums and federally owned lands such as reservations. Information from ITS is conflated to Common Ownership Lot features by SSL (Square, Suffix and Lot). This layer does not include condo records. This layer is regenerated WEEKLY with an automated algorithm using the latest Pubic Extract information for attribution.

    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: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date April 30, 2024
    Metadata Updated Date February 11, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date February 11, 2026
    Publisher Department of Buildings
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=1f6708b1f3774306bef2fa81e612a725&sublayer=40
    Data First Published 2015-02-27T21:10:07.000Z
    Data Last Modified 2026-02-10T07:05:16.000Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 ce2079fc-2a25-4610-ad0a-e1868c27cdea
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::common-ownership-lots
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1194,38.8016,-76.9090,38.9960
    Source Datajson Identifier True
    Source Hash e41328bd41776891f5b45b552cec21319ecbcc491a330a27ce6195dae733d76a
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1194, 38.8016, -77.1194, 38.9960, -76.9090, 38.9960, -76.9090, 38.8016, -77.1194, 38.8016}

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