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

    Additional Dwelling Unit Preapproval Applications

    Metadata Updated: February 1, 2026

    Applications for preapprovals for Additional Dwelling Units (ADUs) received by the Department of Housing pursuant to the December 2020 ADU Ordinance. After issuance of an ADU preapproval, the owner must obtain a building permit from the Department of Buildings before constructing an ADU.

    For a map of the eligible areas, please see https://data.cityofchicago.org/d/n8dk-kjjn.

    For more information about ADUs in Chicago, visit http://www.chicago.gov/ADU.

    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: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date August 7, 2021
    Metadata Updated Date February 1, 2026

    Metadata Source

    Harvested from Chicago JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date August 7, 2021
    Metadata Updated Date February 1, 2026
    Publisher data.cityofchicago.org
    Maintainer
    Identifier https://data.cityofchicago.org/api/views/xbwc-ntpx
    Data First Published 2021-06-02
    Data Last Modified 2026-01-30
    Category Buildings
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.cityofchicago.org/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 c54907ef-8ddd-4671-a5ed-2cebc57f1c45
    Harvest Source Id 7590e386-229e-453a-8e53-6f18e200e421
    Harvest Source Title Chicago JSON
    Homepage URL https://data.cityofchicago.org/d/xbwc-ntpx
    Source Datajson Identifier True
    Source Hash 3b0574d3739361ad574e22c227a9560b94ac5384183104571cc6bb09e5422cc3
    Source Schema Version 1.1

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