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Additional Dwelling Unit Grant Program

NHS offers grant programs for homeowners to design and build new ADU units, convert finished spaces, or repair existing units to comply that with Chicago city codes.

Program Status

Currently, we are no longer accepting applications for the Additional Dwelling Unit Grant Program.


Program Overview

In December 2020, the Chicago City Council passed an ordinance allowing for the creation of Additional Dwelling Units (ADUs). The ordinance aimed to create not only more affordable housing, but also create more housing types in a variety of neighborhoods for residents of all income levels. ADUs can serve as a source of financial stability or relief, encouraging revenue generation and wealth building for homeowners, especially for those who deal with high housing costs.


The ADU Grant Program pilot provides grants for income eligible residents to work with architects, general contractors and other construction services specialists to EITHER bring existing ADU units up to code OR create new, rentable spaces from their attics, basements, or garages. There are two types of grants available - planning grants and construction grants. Planning grants (maximum $10,000) cover a home consultation, architect fees, and permit fees in order to file your architectural plans with the City of Chicago Department of Buildings. Once you have submitted your plans to the City for a building permit or you are ready – permit in hand -- to build out your space, construction grants (5-year forgivable loans up to $75,000) will help subsidize the construction management and construction costs of your unit.


Please note: You may only apply for EITHER a planning grant OR a construction grant. If you apply for and receive a planning grant, you may then apply for a construction grant, provided there is funding available, ONLY AFTER you have submitted your architectural plans to the City to obtain a building permit. You may not apply for both grants at the same time.


Uploading Documents

If you've already started the application process and still need to upload required documents, sign on to your secure NHS account by clicking HERE or going to the the "Client Login" button on the NHS webpage. You may upload and save documents and login again at a later time to upload additional documents. You may also access the "How to upload document to your online NHS account" resource by clicking HERE.

If you are not able to upload electronic versions of your document, you may drop off paper copies of your documents at NHS offices during normal business hours.


Have Questions?

Please email our Construction Services team at or call NHS Client Services at 773-329-4111.


ADU FAQs & Toolkit

FAQs about Additional Dwelling Units
Review Documents Required to determine income eligibility
Basement Unit Manual
Better understand the planning costts, and risks associated with building out your basement into a rentable unit.
Don't qualify for the ADU Repair grants, but are still interested in converting your space?

APPLY for a building permit directly with the City of Chicago

Contact NHS Construction Services if you would like NHS to consult on your ADU project (fees apply)
    How to upload Documents to your NHS Online Account