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Detached ADU in Illinois
Maya Construction Group
4408 North Milwaukee Avenue, Chicago, IL 60630Maya Construction Group is a Chicago-based design-build contractor specializing in home additions and remodeling. Licensed and insured, they handle permits, zoning, and inspections while offering owner-supervised project management for kitchens, bathrooms, and basement finishing.
read moreQuantum Realm Construction
161 N Spruce St, Arthur, IL 61911Quantum Realm Construction builds custom ADUs in Illinois—backyard cottages, in-law suites & granny flats. Costs range $80K–$200K, with builds completed in 3–6 months. Ideal for rental income or extra living space.
read moreMoss Architecture
2855 West Diversey Avenue, Chicago, IL 60647Moss Architecture is a leading Chicago ADU contractor specializing in accessory dwelling units, coach houses, and garage conversions. Following the 2021 Chicago ADU ordinance, they design detached ADUs, in-law suites, and backyard cottages across the city.
read moreFBC Remodel Naperville
425 Jackson Avenue, Naperville, IL 60540FBC Remodel Naperville uses a Design-Build model for home additions, uniting architects and builders under one roof. Benefits include accurate budgeting, guaranteed pricing, permit handling, 3D renderings, and seamless integration with your existing home.
read moreCoach House Garages
700 E Mill St., Arthur, IL 61911Coach House Garages builds detached ADUs, garage guest suites & granny flats across Illinois, Indiana, Missouri, Iowa & Michigan. Offering Amish-crafted, code-compliant structures for multigenerational living, rentals & home offices.
read moreJ Scott Builders Inc.
4023 North Francisco Avenue, Park Ridge, IL 60618J Scott Builders Inc. offers ADU construction, custom home building, and renovations in Albany, OR. Services include in-law suites, detached ADUs, new builds, and expansions tailored to each homeowner's needs.
read moreAssembly Squad Remodeling LLC
205 North Michigan Avenue, Chicago, IL 60601Chicago's Assembly Squad Remodeling LLC specializes in attic conversions & ADUs. Services include bedroom suites, rental units ($1,500–$2,500/mo), home offices & more. Pricing starts at $50/sq ft. Permits & compliance managed.
read moreKeen Construction
7642 W Lakeview Terrace, Frankfort, IL 60423For over three decades, Keen Construction has been rooted in family values and exceptional craftsmanship. Founded by Darren Trybalski, whose father and grandfather were both builders, this deep-rooted connection to construction shaped our commitment to quality and attention to detail from the very beginning.
read moreBLDG Projects
4468 North Elston Avenue, Chicago, IL 60630Chicago legalized ADUs in 2020 across five pilot zones. BLDG Projects ranks among the top ADU contractors in Chicago, specializing in coach house, basement, garage, and attic conversions to help homeowners add rental income or living space.
read moreYu & Associates Collaborative
3121 North Halsted Street, Chicago, IL 60657Yu & Associates Collaborative designed a detached ADU above a garage in Chicago's Wicker Park under the city's ADU pilot program. The compact backyard cottage features a bedroom, living room, kitchen, and office, maximizing space with high ceilings and smart design.
read moreVia Chicago Architects
3231 West Armitage Avenue, Chicago, IL 60647Chicago legalized accessory dwelling units (ADUs) in 2020. Via Chicago Architects designs coach houses, granny flats & basement apartments for rental income, home offices, or guest suites on existing residential properties.
read moreChicago Granny Flats
650 Waukegan Road, Glenview, IL 60025Chicago Granny Flats offers turnkey ADU design-build services in Chicago, specializing in Coach Houses and Backyard Cottages. Using recycled steel panels, they deliver energy-efficient granny flats with guaranteed pricing, custom floor plans, and full utility connections.
read moreADU America
1755 Park St suite#200, Naperville, IL 60563ADU America builds custom tiny homes & ADUs—studio, 1-bed, 2-bed, garage conversions & more. 25+ years experience, turnkey process, on-site construction, 6–12 month timeline, 1-year warranty & flexible financing options.
read moreGarage Builder Chicago
3839 North Harlem Avenue, Chicago, IL 60634Chicago-based Garage Builder Chicago offers custom garage construction, ADU development, and garage deck building. Services include garage conversions, detached ADUs, and permit handling, with timelines from 4 weeks to 6 months.
read moreOther cities in Illinois
- Naperville
- Arthur
- Glenview
- Chicago
- Park Ridge
- Des Plaines
- Frankfort
- Mount Prospect
- Reynolds
- Elgin
- Skokie
- Bloomingdale
What you need to know
Searching for top Detached ADU ADU Contractors in Illinois? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Detached ADU ADU Contractor in Illinois ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Detached ADU professionals can guide you through every step.
Illinois homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Detached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Detached ADU ADU Contractors in Illinois, and get started today.