AT Architecture Inc
Billings, MT
5.0(1)
ADU ConstructionArchitecture & Design
AT Architecture Inc. Architect. 2810 Central Ave STE B, Billings, MT 59102, United States
Looking for the best ADU design-build firms in Billings, Montana? Our directory features 3 vetted adu design-build firms serving the Billings area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.
AT Architecture Inc. Architect. 2810 Central Ave STE B, Billings, MT 59102, United States
Collaborative Design Architects. Architect. 2280 Grant Rd, Billings, MT 59102, United States
Larch - Architecture. Architect. 2007 Elm St, Billings, MT 59101, United States
Billings is one of the top markets for accessory dwelling units in Montana. With growing demand for affordable housing, ADU construction in Billings 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 Billings helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Billings 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 Billings requires building permits. Montana 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 Billings 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.