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Detached ADU near Thornton, CO
ADU 5280
440 Pennsylvania Street, Denver, CO 80203 13.7 milesADU 5280 is a Denver-based ADU design-build company since 2013, offering detached ADUs, garage conversions & home additions. They manage zoning, permits, design & construction for homeowners looking to boost property value.
read moreSuperior Construction & Home Renovations
9815 Eagle Creek Circle, Commerce City, CO 80022 5.5 milesSuperior Construction & Home Renovations builds permitted ADUs in Denver, including backyard cottages, garage conversions, and basement suites. Following Denver's 2024 expansion, ~70% of residential lots now qualify. Full-service from zoning to final inspection.
read moreKindred Tiny Homes
1040 S Gaylord Ste, Denver, CO 80209 16.8 milesKindred Tiny Homes builds custom stick-built ADUs across Colorado. Studios from $98K, 1-bed to $220K, 2-bed to $287K. Earn $2K–$3K/month rental income, boost property value 20–40%. Full project management, transparent pricing, 12-month timeline.
read moreO'Brien Construction LLC
2235 West 47th Avenue, Denver, CO 80211 10.2 milesO'Brien Construction LLC is an ADU contractor specializing in design, engineering, and construction of accessory dwelling units. Services include detached ADUs, additions, and design-assisted builds, with free consultations available.
read moreModernSpace ADU Construction Team Parker
10015 South Parker Road, Parker, CO 80134 27.4 milesModernSpace ADU Construction is a trusted ADU builder in Corona with 20+ years of experience. They offer detached ADUs, garage conversions, JADUs, attached additions, and full design services including permits and 3D renderings.
read moreArch Design & Build
9800 Mount Pyramid Court, Englewood, CO 80112 26.8 milesArch Design & Build is a licensed Denver remodeling company specializing in ADU construction, garage conversions, kitchen & bathroom remodeling, basement finishing, and home additions. They offer upfront pricing, VR design previews, and a proven step-by-step process.
read moreTinyMod
8150 Gray Fox Dr, Evergreen, CO 80439 28.6 milesTinyMod (TMOD™) is an offsite development partner offering feasibility analysis, project management, and factory coordination for builders. Services support ADUs, modular communities, BFR, and missing middle housing with up to 60% faster build times.
read moreALH Contracting
4950 South Yosemite Street, Greenwood Village, CO 80111 20.6 milesADUs are self-contained units like garage apartments or granny flats built on existing properties. In Denver, ALH Contracting helps homeowners build ADUs for rental income, family housing, or added property value.
read moreNorth Hill by Toll Brothers
14133 Kearney Loop, Thornton, CO 80602 2.8 milesExpert ADU contractors handle detached ADUs, garage conversions, granny flats, JADUs & in-law suites. From design and permitting to final inspection, experienced ADU builders ensure code-compliant, high-quality accessory dwelling unit construction.
read moreOlerra Living Innovations
1945 Canyon Boulevard, Boulder, CO 80302 18.5 milesOlerra Living Innovations builds modular ADUs called Flex-Flats in Colorado. Models range from 245 to 735 sq ft, featuring steel-frame construction, 10+ year warranties, and 10,000+ design options. Projects complete in 3–6 months, costing 40–50% less than site-built ADUs.
read moreKalin Construction
201 Columbine Street, Denver, CO 80206 13.8 milesAs experienced ADU builders in Denver, Kalin Construction has helped numerous homeowners bring their visions for their homes to life. They'll listen to your wants and needs for the project, then craft an ADU that checks all of your boxes. Whether you're interested in a detached ADU or another type of accessory dwelling unit, they specialize in ADU projects that can provide affordable housing and passive income.
read moreEcoMod
22303 Interstate 76 Frontage Road, Hudson, CO 80642 20.2 milesEcoMod is a Denver-based ADU builder offering sustainable, affordable housing using repurposed shipping containers. Models range from 320–800 sq ft, starting at $64,000. Homes are 9x stronger, last 200+ years, and cut construction costs by 30%.
read moreRocky Mountain ADUs
Loveland, CO 80435 33.7 milesDL Engineering Inc.
9100 West Jewell Avenue, Lakewood, CO 80232 17.8 milesDenver ADUs (granny flats, garage conversions, in-law units) offer affordable housing density solutions. DL Engineering Inc. provides structural engineering, design, and permitting services for Denver accessory dwelling unit projects.
read moreOther cities in Colorado
- Arvada
- Aurora
- Boulder
- Buena Vista
- Cañon City
- Castle Rock
- Colorado Springs
- Commerce City
- Denver
- Edgewater
- Englewood
- Evergreen
- Fort Collins
- Grand Junction
- Greenwood Village
What you need to know
Searching for top Detached ADU ADU Contractors in Thornton, Colorado? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Detached ADU ADU Contractor in Thornton 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 Detached ADU professionals can guide you through every step.
Thornton homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Detached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Detached ADU ADU Contractors in Thornton, Colorado, and get started today.