ADU Contractors in Colorado
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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Denver Dream Builders
2339 East 5th Avenue, Denver, CO 80206
Colorado general contractor since 2005, offering ADU builds, kitchen remodels, bathroom renovations, basement finishing, roofing, and new home construction. Free consultation, no upfront payment, licensed and insured.
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Urban ADU
19 N Tejon St Suite 313, Colorado Springs, CO 80903
Urban ADU builds energy-efficient accessory dwelling units in Colorado Springs, CO. Featuring spray foam insulation, solar options, Zero Energy Ready certification, and 3D planning tools, they simplify ADU construction from permits to placement.
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Krick Design Build
759 1/2 Elati Street, Denver, CO 80204
Krick Design + Build is a Colorado Front Range residential design-build firm specializing in ADUs. Founded by Licensed Architect Matthew Krick, they've completed 57+ ADUs including backyard cottages, garage conversions, and in-law suites.
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Evans Construction LLC
Colorado Springs, CO
Evans Construction LLC is a Colorado Springs ADU builder offering attached, detached, and garage conversion ADUs. Services include design, permitting, and construction, helping homeowners add rental income, multigenerational living, or guest space.
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Square1 Construction Limited
4520 Centennial Boulevard, Colorado Springs, CO 80919
Square1 Construction Limited offers expert ADU build services, including detached ADUs, garage conversions, granny flats, and in-law suites. They handle permits, design, and construction to boost property value and create functional, energy-efficient living spaces.
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Superior Construction & Home Renovations
9815 Eagle Creek Circle, Commerce City, CO 80022
Superior 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.
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Factor Design Build
4255 Jason Street, Denver, CO 80211
Factor Design Build is a Denver & Boulder, CO design-build firm with 30+ years of experience in luxury home remodeling, custom new homes & additions. Their integrated team of architects, designers & builders ensures seamless, on-budget results.
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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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ADU Home Tour
6825 Eaton Street, Arvada, CO 80003
L&D Construction is Denver's dedicated ADU contractor, led by Colorado native David Schultz. Specializing in accessory dwelling units, detached ADUs, and backyard cottages since 2017, they bring deep local expertise and firsthand ADU building experience to every project.
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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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Arch Design & Build
9800 Mount Pyramid Court, Englewood, CO 80112
Arch 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.
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5 Rings Construction
12446 Tomahawk Rd, Parker, CO 80138
ADU 5280
440 Pennsylvania Street, Denver, CO 80203
ADU 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.
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Prenvalley Builders
5180 Fox Street, Denver, CO 80216
Prenvalley Builders is Denver's trusted ADU contractor & custom home builder. Specializing in ADUs, renovations, pop-tops & garages across the Front Range, they offer a seamless design-build process with honest pricing & energy-efficient construction.
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Other cities in Colorado
What you need to know
ADU Contractors in Colorado: Navigating the Mile-High State's Housing Landscape
Colorado has become one of the most progressive states in the country when it comes to Accessory Dwelling Units (ADUs). In 2024, Colorado passed House Bill 24-1152, a landmark piece of legislation that requires most municipalities to allow ADUs in single-family residential zones statewide. This sweeping reform has created a significant surge in demand for qualified ADU contractors in Colorado, as homeowners across Denver, Boulder, Colorado Springs, and Fort Collins look to capitalize on new building opportunities. Whether you're looking to add a detached guest house, a basement apartment, or a garage conversion, finding the right ADU contractor in Colorado is more important than ever.
What Colorado ADU Contractors Must Know About Local Regulations
While state law has opened the door for ADU construction, Colorado ADU contractors must still navigate a complex web of local zoning codes, building permits, and design standards. Each municipality retains the right to impose certain restrictions, including:
- Maximum square footage limits (often capped between 800 and 1,000 sq ft)
- Owner-occupancy requirements in some jurisdictions
- Setback and height restrictions specific to each city or county
- Utility connection and infrastructure requirements
- Design compatibility standards to match the primary residence
Experienced ADU builders in Colorado understand that working in Denver's zoning districts differs greatly from building in mountain communities like Aspen or Steamboat Springs, where terrain, elevation, and environmental regulations add additional layers of complexity to any construction project.
Types of ADUs Colorado Contractors Commonly Build
Skilled ADU contractors in Colorado are well-versed in constructing a variety of unit types to suit different property layouts and homeowner needs. The most common ADU types built across the state include:
- Detached ADUs: Standalone structures built in the backyard, separate from the main home
- Attached ADUs: Units connected to the primary residence, sharing at least one wall
- Garage Conversions: Transforming existing garages into livable, permitted dwelling spaces
- Basement ADUs: Converting unfinished basements into fully functional apartments
- Junior ADUs (JADUs): Smaller units created within the existing footprint of the home
Choosing the Right ADU Contractor in Colorado
When selecting an ADU contractor in Colorado, homeowners should prioritize professionals who are licensed through the Colorado Department of Regulatory Agencies (DORA) and carry proper liability insurance and workers' compensation coverage. A reputable contractor will handle the entire process, from initial design and permit applications to final inspections. Look for contractors with demonstrated experience in Colorado's unique climate considerations, including energy efficiency requirements under the Colorado Energy Code, proper insulation for high-altitude winters, and compliance with wildfire mitigation standards in applicable zones.
The Investment Value of Building an ADU in Colorado
With Colorado's housing market remaining highly competitive and rental demand strong in cities like Denver and Boulder, adding an ADU is a smart financial move. Colorado ADU contractors report that well-built units can generate significant rental income while also increasing overall property value. As the state continues to address its housing shortage, investing in a professionally built ADU with a qualified Colorado contractor is one of the most strategic home improvement decisions a property owner can make.