Detached ADU in Illinois

Chicago Granny Flats

650 Waukegan Road, 60025, Glenview, IL

Licensed Eco-Friendly

Chicago 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.

Quantum Realm Construction

161 N Spruce St, 61911, Arthur, IL

Luxury Builds

Quantum 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.

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ADU Professionals by state