
Keystone Construction
Keystone Construction. Custom home builder. 3901 E Hagan St STE G, Bloomington, IN 47401, United States
Looking for the best ADU design-build firms in Bloomington, Indiana? Our directory features 4 vetted adu design-build firms serving the Bloomington area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.

Keystone Construction. Custom home builder. 3901 E Hagan St STE G, Bloomington, IN 47401, United States

Loren Wood Builders Design Build. Custom home builder. 900 S Walnut St, Bloomington, IN 47401, United States

Bailey Weiler Homes. Custom home builder. 648 N Madison St Suite 100, Bloomington, IN 47404, United States

Duke Homes. Custom home builder. 4300 N Rd 725 W, Bargersville, IN 46106
Bloomington is one of the top markets for accessory dwelling units in Indiana. With growing demand for affordable housing, ADU construction in Bloomington offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of adu design-build firms in Bloomington helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Bloomington typically range from $150,000 to $350,000 depending on size, design, and finishes. Garage conversions are generally less expensive ($80,000–$150,000), while custom-built detached ADUs can cost more. Get free quotes from our listed adu design-build firms to compare prices.
Yes, ADU construction in Bloomington requires building permits. Indiana has specific ADU regulations, and local zoning laws may have additional requirements. Our listed builders can help you navigate the permitting process.
ADU construction timelines in Bloomington typically range from 4–12 months, depending on the project type. Prefab ADUs can be installed in 2–4 months, while custom builds may take 8–12 months including design and permitting.