
D&G Construction
D&G Construction is a leading full-service builder, specializing in whole-home remodeling, custom basement finishing, and new home construction.
Find the best ADU builders and contractors across Colorado. Browse 21 cities with 245 verified builders ready to help with your accessory dwelling unit project.

D&G Construction is a leading full-service builder, specializing in whole-home remodeling, custom basement finishing, and new home construction.

This detached backyard ADU in Colorado Springs marked Prenvalley Builders’ first accessory dwelling unit project and the beginning of their ADU expertise.

Prenvalley Builders is a Denver-based design–build company specializing in high-performance custom homes, ADUs, additions, pop-tops, and large-scale renovations.

Specializing in ADU construction and related services in Greeley, CO.

JS Luxury Homes. Custom home builder. 16690 Early Lgt Dr, Colorado Springs, CO 80908, United States

Specializing in ADU construction and related services in Colorado Springs, CO.

Stone Aspen Builders. Custom home builder. 1181 Purple Sage Loop #7846, Castle Rock, CO 80104, United States

Happy Homes of Colorado. General contractor. 2903 Serendipity Cir E, Colorado Springs, CO 80917, United States

Adue Interiors. Interior designer. 1260 Yellow Pine Ave, Boulder, CO 80304, United States
Full-service ADU construction companies that handle everything from design to completion.
Specialists in converting existing garages into livable accessory dwelling units.
Companies that manufacture and install prefabricated accessory dwelling units.
Builders specializing in custom-designed ADUs tailored to your property and needs.
Builders focused on detached backyard cottages and guest houses.
Contractors specializing in attached or detached in-law suites and granny flats.
Firms offering integrated design and construction services for ADUs.
Builders specializing in tiny homes and compact living spaces.
Licensed general contractors experienced in ADU construction and renovation.
Companies that help navigate ADU permitting, zoning, and regulatory requirements.
Colorado is home to a growing ADU market with 245 builders across 21 cities. Accessory dwelling units are becoming increasingly popular in Colorado as homeowners look for ways to add living space, generate rental income, or provide housing for family members. Whether you're looking for a prefab ADU, custom-built backyard cottage, garage conversion, or in-law suite, our directory helps you find experienced local builders who understand Colorado's building codes and permit requirements.
ADU regulations vary by city and county in Colorado. Many municipalities have recently updated their zoning laws to make it easier to build ADUs. Our listed builders can help you navigate local regulations, obtain necessary permits, and complete your project on time and within budget.