The 10 ADU builders from Google's results for Chicago, Illinois, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.
Last updated
Licensing in Illinois. Illinois has no statewide license for general contractors. Chicago licenses them through its Department of Buildings.
on GoogleChicago, IL
Yu & Associates Collaborative is a Chicago architecture firm that designs backyard accessory dwelling units. One project is a 700-square-foot detached unit behind a single-family home in Wicker Park, created as extra living space for a family and drawn up alongside structural and MEP consultants.
(773) 234-1866 3121 N Halsted St, Chicago, IL 60657
on GoogleChicago
Serving the northwest suburbs of Chicago, Walsh Design & Build creates custom accessory dwelling units, either attached to the house or built as standalone structures. The team runs each project from design through construction, producing units used for family members, rental tenants or private home offices.
on GoogleChicago, IL
Moss Design is a Chicago design-build firm that works on accessory dwelling units, including the coach houses common on city lots. Its site tracks Chicago's ADU ordinance and the history of local building types such as worker cottages, bungalows and greystone flats.
(773) 857-5533 2855 W Diversey Ave, Chicago, IL 60647
Chicago
Chicago ADU Builders constructs accessory dwelling units in Chicago.
Chicago
Chicago ADU builds accessory dwelling units in Chicago.
Chicago
Builds accessory dwelling units in the Chicago area.
Chicago, IL
Foster Dale Architects designs residential new construction, renovations and additions, along with commercial and mixed-use buildings around Chicago. Its ADU work includes a coach house with a rental unit set above a garage, laid out on an irregular lot to keep yard space open for children.
(773) 327-1000 3717 N Ravenswood Ave #111, Chicago, IL 60613
Chicago
Natures Builders LLC is a Chicago construction and home remodeling company that takes on ADU projects. Its work includes turning unused detached garages and basements into accessory dwelling units under the city's updated rules, with help on permits, costs and eligibility.
Chicago
Crimson Design & Construction designs and builds ADUs and coach houses in Chicago. Each secondary living unit is planned around the lot, the existing house and the owner's intended use, whether for family, guests or a private workspace.
Chicago
Coach House Builders, LLC handles accessory dwelling units in Chicago, Evanston and Oak Park, IL, from planning through construction. Services include feasibility studies, financial modeling for different financing options, and legalizing existing ADUs and garden apartments.
In Chicago, a garage conversion ADU typically costs $69,000 – $172,500. Remodeling labor in Chicago runs about 15% above the US median, which accounts for most of the difference from the same project elsewhere.
These are the firms from Google's results for "adu builders chicago", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.
It depends on your city and state. California, Oregon and Washington have state laws that make ADUs allowed on most single-family lots. Elsewhere it is set by local zoning, so check lot size, setback and owner-occupancy rules with your city first.