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

    Alley Frontage Lines

    Metadata Updated: April 8, 2026

    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.

    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 April 8, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date April 8, 2026
    Publisher Department of Buildings
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=ea23361fc16b409cb944b0e64fd7c973&sublayer=1
    Data First Published 2015-02-27T21:09:45.000Z
    Data Last Modified 2026-04-04T11:31:55.000Z
    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 d82c1064-0f80-415d-ac9f-a2a4977654ae
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::alley-frontage-lines
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1137,38.8204,-76.9106,38.9900
    Source Datajson Identifier True
    Source Hash 1d3e53d1b7fae4bbdb84c1a5b16e64b9e0b1afef4e84a33452fd6ed04302d4fb
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1137, 38.8204, -77.1137, 38.9900, -76.9106, 38.9900, -76.9106, 38.8204, -77.1137, 38.8204}

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