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Additional Dwelling Unit Preapproval Applications

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

For more information about ADUs in Chicago, visit

Querying over HTTP

Splitgraph serves as an HTTP API that lets you run SQL queries directly on this data to power Web applications. For example:

curl \
    -H "Content-Type: application/json" \
{"sql": "
    SELECT *
    FROM \"cityofchicago/additional-dwelling-unit-preapproval-applications-xbwc-ntpx\".\"additional_dwelling_unit_preapproval_applications\"
    LIMIT 100 

See the Splitgraph documentation for more information.

  • additional_dwelling_unit_preapproval_applications
Upstream Metadata