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ADU Builders in Colorado

Find the best ADU builders and contractors across Colorado. Browse 21 cities with 97 verified builders ready to help with your accessory dwelling unit project.

97builders
21cities

Top Cities in Colorado

All Cities in Colorado

Top Rated Builders in Colorado

Featured
5.0(42)
ADU ConstructionCustom ADURemodeling

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

Verified

Prenvalley Builders

Colorado Springs, CO
5.0(42)
ADU ConstructionCustom ADURemodeling

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

Featured

Summit Builders Inc

Fort Collins, CO
5.0(9)
Custom ADUDesign-Build ADU

Specializing in ADU construction and related services in Fort Collins, CO.

Grandview Custom Homes

Colorado Springs, CO
5.0(1)
ADU ConstructionCustom ADUGeneral Contracting

Industry Leading General Contractors in Colorado Springs, Colorado. At Grandview Custom Homes, we bring creativity and craftsmanship to every project. With experience building everything from Parade of Homes award winners to tract homes, barndominiums, and manufactured homes, we specialize in unique, alternative-style homes that seamlessly blend natural elements with modern living. Serving the Front Range, primarily in El Paso County and the greater Colorado Springs area, we create spaces that are both beautiful and functional—whether it’s Tadelakt walls, greenhouses, breezeways, or living roofs. Our top priority is communication, ensuring a smooth, transparent process so you can truly love where you live.

ADU Services in Colorado

ADU Builders

Full-service ADU construction companies that handle everything from design to completion.

Garage Conversion

Specialists in converting existing garages into livable accessory dwelling units.

Prefab ADU

Companies that manufacture and install prefabricated accessory dwelling units.

Custom ADU

Builders specializing in custom-designed ADUs tailored to your property and needs.

Backyard Cottage

Builders focused on detached backyard cottages and guest houses.

In-Law Suite

Contractors specializing in attached or detached in-law suites and granny flats.

ADU Design-Build

Firms offering integrated design and construction services for ADUs.

Tiny Home Builders

Builders specializing in tiny homes and compact living spaces.

ADU Contractors

Licensed general contractors experienced in ADU construction and renovation.

ADU Permit Services

Companies that help navigate ADU permitting, zoning, and regulatory requirements.

About ADU Construction in Colorado

Colorado is home to a growing ADU market with 97 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.

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