Published on Dec. 15, 2021 by Steven Vance
Updated on Dec. 16, 2021
Chicago re-legalized the construction of “accessory dwelling units” one year ago today. Happy first anniversary, ADU ordinance!
This is the story I’ve been waiting a couple of weeks to write. Let’s celebrate that 21 basement units and backyard houses will be under construction and hosting tenants, guests, and family members next year, set a goal for 2022, discuss new ADU grants, and share some new backyard ADU designs.


The Chicago Department of Building started accepting permit applications in May, and the first ADU permit was issued on September 1, 2021.
The architect for that first basement unit was Purohit Hemal, who works for BLDG PROJ.
I interviewed Kaya and Virginia of BLDG PROJ last month because their firm is associated with the most ADU permits.
Of the 21 ADU permits, six of them are for backyard houses. See an always-updated list of ADU permits in Cityscape’s Building Permits Browser
The following charts show where ADU permits were issued by ward and community area. The Edgewater community area has five ADU permits; amongst wards, the 47th and 48th are tied, each with four ADU permits.

For next year, I would like to see ADU permit issuance reach three digits (meaning, at least 100). This might be difficult, and I don’t have enough information from applicants and potential applicants to confidently explain the reasons why we may not reach 100 ADU permits in 2022.
I have a hunch, though, and it has to do with funding. In May I created a survey to collect thoughts and ideas from people on how they were planning or intendent to fund their ADU. Most responses have been from people who were still establishing how they would fund a basement unit or backyard house.
To help with that, City Council created a special program to help fund the construction of ADUs. The program is administered by Neighborhood Housing Services of Chicago, and was launched this fall.
Here’s how the ADU grant program works:
Review the documentation requirements and apply online or in-person.
Last month I participated in a panel presentation and discussion with a class of architecture students at IIT, alongside Andrew Bayley (Moss Design, based in Chicago), Cristina Gallo (Via Chicago Architects & Diseñadores, based in Chicago), and Katherine Gullick (an architecture student in Houston who recently completed a backyard house installation there).
Andrew and Cristina are both working on backyard house designs that are expected to have building permits issued soon. Check out their designs below.


Chicago hits 21 ADU permits in 2021 was originally published in Chicago Cityscape on Medium, where people are continuing the conversation by highlighting and responding to this story.
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