First ADU
Denver, CO
5.0(0)
ADU Construction
First ADU. Construction company. 440 Pennsylvania St, Denver, CO 80203, United States
Looking for the best backyard cottage builders in Denver, Colorado? Our directory features 22 vetted backyard cottage builders serving the Denver area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.
First ADU. Construction company. 440 Pennsylvania St, Denver, CO 80203, United States
Prenvalley Builders is a Denver-based design–build company specializing in high-performance custom homes, ADUs, additions, pop-tops, and large-scale renovations.
Mountain State Construction. Steel erector. 1001 Bannock St Suite 615, Denver, CO 80204, United States
Rescue. Water damage restoration service. 1415 Park Ave W, Denver, CO 80205, United States
Specializing in ADU construction and related services in Denver, CO.
We are a general contracting construction company that specializes in estimating, scheduling, managing, and running on time and in budget residential and commercial remodeling projects.
Sustainable Design Build. Home builder. 99 Inca St, Denver, CO 80223, United States
L&D Construction. Contractor. 5151 Bannock St, Denver, CO 80216, United States
Specializing in ADU construction and related services in Denver, CO.
A2Z Builders. General contractor. 501 S Lipan St, Denver, CO 80223
Factor Design Build. Custom home builder. 4255 Jason St Suite 100, Denver, CO 80211
Specializing in ADU construction and related services in Denver, CO.
Specializing in ADU construction and related services in Denver, CO.
Revo Renovations LLC. Home builder. 2135 S High St, Denver, CO 80210, United States
Specializing in ADU construction and related services in Denver, CO.
5280ADU, a division of Revo Renovations, specializes in Accessory Dwelling Units (ADUs) in Denver County. We handle zoning, permits, and construction to bring your vision to life, with expertly built living spaces tailored to your needs.
Sunward Steel Buildings. Manufacturer. 6800 E Hampden Ave, Denver, CO 80224, United States
Specializing in ADU construction and related services in Denver, CO.
Specializing in ADU construction and related services in Denver, CO.
Denver is one of the top markets for accessory dwelling units in Colorado. With growing demand for affordable housing, ADU construction in Denver offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of backyard cottage builders in Denver helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Denver 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 backyard cottage builders to compare prices.
Yes, ADU construction in Denver requires building permits. Colorado 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 Denver 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.