Attached ADU in Colorado
Stream Home Construction
3423 North Prospect Street, Colorado Springs, CO 80907
Stream Home Construction builds attached & detached ADUs in Colorado Springs. Services include custom floor plans, permits, zoning, and inspections. They help homeowners add rental income, family space, or guest units, boosting property value.
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Prestige Contractors
115 Wilcox Street, Castle Rock, CO 80104
Prestige Contractors builds ADUs in Castle Rock & Douglas County with 20+ years of experience. Services include detached units, garage conversions, above-garage ADUs & attached additions. Fully permit-managed & code-compliant.
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Mile High Construction
11012 Newark St., Commerce City, CO 80640
Mile High Construction is a Denver Metro custom home builder with nearly 30 years of experience. Led by Jordan Barnett, they offer personalized design, sustainable building, and transparent communication, guiding clients from consultation to final walk-through.
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Arise Constructions & Remodels
44 Cook Street, Denver, CO 80206
Arise Constructions is a Denver, CO full-service residential contractor offering custom homes, ADUs, remodels, additions, and structural work. They use the JobTread portal for transparency and back all work with a minimum one-year warranty.
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Dragonfly Construction
2221 Broadway, Grand Junction, CO 81507
Dragonfly Construction in Grand Junction, CO offers the best construction remodeling services in the area. Transforming spaces with quality craftsmanship and attention to detail.
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Sustainable Design Build
99 Inca Street, Denver, CO 80223
Sustainable Design Build is Denver's premier ADU builder and contractor, using design-build for accessory dwelling units, garage conversions, in-law suites, backyard cottages, granny flats, and detached ADUs. Benefits: single contract, faster timelines, cost efficiency, fixed pricing. Experts in local zoning since 2017.
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NAGY Design
2255 Sheridan Blvd. Unit C270, Edgewater, CO 80214
NAGY Design built a standout 2,200 sq ft detached ADU in Denver's Sloan's Lake, nominated for Best ADU 2022. Costs range $100K–$300K. Their full-service process covers planning, permits, and construction oversight.
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River North Basement Company
3629 Jason Street, Denver, CO 80211
River North Basement Company is a Denver ADU contractor offering construction and remodeling services for accessory dwelling units, including rental units, in-law suites, and guest spaces, ensuring code compliance throughout.
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AAA Home Improvements, Inc.
10701 West Morrison Road, Lakewood, CO 80227
AAA Home Improvements is a Denver ADU contractor building detached ADUs, garage conversions, basement units & in-law suites across the Front Range. They manage design, permitting & construction for homeowners in Denver, Lakewood, Arvada & Littleton.
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Prospect 30 Eight Construction Inc
2944 Routt Circle, Lakewood, CO 80215
Prospect 30 Eight Construction proudly offers its high-quality building services to the charming community of Littleton. Known for its unique blend of suburban tranquility and easy access to metropolitan conveniences, Littleton is the ideal setting for a custom home, home addition, and Accessory Dwelling Unit (ADU).
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Studio Home by Studio Shed
1500 Cherry Street, Louisville, CO 80027
Studio Home by Studio Shed offers custom & prefab ADUs across Texas, including San Antonio, Austin, Dallas & Houston. Units range from studios to full living spaces. Permit costs vary: Dallas $3K–$8K, Houston $2.5K–$7.5K.
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L&D Construction
5151 Bannock Street, Denver, CO 80216
L&D Construction builds ADUs across Denver, including detached units, garage conversions, and attached living spaces. Projects focus on multigenerational living, rental income, and accessibility, serving neighborhoods citywide with zoning-compliant, adaptable designs.
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Original Roots Design + Build
383 Corona Street, Denver, CO 80218
Central Denver's trusted ADU builders and design/build remodelers specialize in older homes. Offering garage conversions, granny flats, and detached ADUs, their skilled team delivers client-inspired design, quality craftsmanship, and outstanding service.
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Live Dream Colorado (LDC)
3225 Templeton Gap Road, Colorado Springs, CO 80907
Live Dream Colorado helps Colorado Springs property owners build ADUs—detached backyard cottages or attached in-law suites. Key factors include zoning, lot size, setbacks, and owner-occupancy rules. LDC guides clients through planning and construction.
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FBC Remodel Denver
1205 South Platte River Drive, Denver, CO 80223
FBC Remodel Denver uses a Design-Build model for home additions, integrating architects and contractors under one roof for efficient, accurate budgeting and clear communication. They handle permits, offer guaranteed pricing, 3D renderings, and manage projects from design to completion.
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Other cities in Colorado
What you need to know
Searching for top Attached ADU ADU Contractors in Colorado? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Attached ADU ADU Contractor in Colorado ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Attached ADU professionals can guide you through every step.
Colorado homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Attached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Attached ADU ADU Contractors in Colorado, and get started today.