Additional Dwelling Unit Areas

Areas eligible for Additional Dwelling Unit permits. Ordinance O2020-2850, passed in December 2020, creates five pilot area zones within which property owners can apply for additional dwelling units under the ADU program.

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

​​​​​This dataset is in a forma​​t for spatial datasets that is inherently tabular but allows for a map as a derived view. Please click the indicated link below for such a map.

To export the data in either tabular or geographic format, please use the Export button on this dataset.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.cityofchicago.org/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data.cityofchicago.org/api/views/ttjb-ayff
issued 2021-07-14
landingPage https://data.cityofchicago.org/d/ttjb-ayff
modified 2021-07-15
publisher data.cityofchicago.org
resource-type Dataset
source_datajson_identifier true
source_hash 046a7c61d42ae07566a94789bd0cc2e9f4da8866
source_schema_version 1.1
theme {Buildings}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • buildings
  • ckan
  • geo
  • geolayer
  • geoss
  • national
  • north-america
  • permits
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer Jonathan Levy
maintainer_email no-reply@data.cityofchicago.org
metadata_created 2025-11-21T15:01:09.004373
metadata_modified 2025-11-21T15:01:09.004377
notes Areas eligible for Additional Dwelling Unit permits. <a href="https://www.chicago.gov/content/dam/city/depts/doh/adu/adu_ordinance.pdf">Ordinance O2020-2850</a>, passed in December 2020, creates five pilot area zones within which property owners can apply for additional dwelling units under the ADU program. For more information about ADUs in Chicago, visit http://www.chicago.gov/ADU. ​​​​​This dataset is in a forma​​t for spatial datasets that is inherently tabular but allows for a map as a derived view. Please click the indicated link below for such a map. To export the data in either tabular or geographic format, please use the Export button on this dataset.
num_resources 4
num_tags 11
title Additional Dwelling Unit Areas