ADU Contractors in Colorado
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... read more
ModernSpace ADU Construction Team Parker
10015 South Parker Road, Parker, CO 80134
ModernSpace 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.
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Henze Construction
Parker, CO 80138
Henze Construction builds custom tiny homes and ADUs, including detached units, backyard cottages, and granny flats. Their 240 sq ft Architectural Tiny Home featured spruce wood, oak countertops, and propane systems. Custom builds available.
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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 constr... read more
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 s... read more
Little Home Builder
12509 Lk Pt Ct, Longmont, CO CO 80504
Little Home Builder is Colorado's dedicated ADU contractor, specializing in stick-built detached ADUs, garage conversions & studios. Full-service from zoning to warranty. Build time: 4–8 months. Financing options available.
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TinyMod
8150 Gray Fox Dr, Evergreen, CO 80439
TinyMod (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 t... read more
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 time... read more
Rocky Mountain ADUs
Loveland, CO 80435
Rocky Mountain ADUs is a Denver-based, family-owned ADU builder offering full-service design, permitting & construction. They provide studio, 1-, 2-, 3-bedroom & loft ADU floor plans, supporting rental income & multi-generational living.
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Jacques Family Construction
3500 Swanstone Drive, Fort Collins, CO 80525
Jacques Family Construction is a licensed general contractor in Fort Collins, CO, offering custom home building, remodeling, basement finishing, home additions, and garage conversions, including JADUs, across Northern Colorado.
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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-efficie... read more
Riverwood Homes of Colorado
613 West Palmer Divide Road, Palmer Lake, CO 80133
Riverwood Homes of Colorado, based in Colorado Springs, specializes in custom home building and luxury remodeling with 20+ years of experience. Award-winning at the 2021 Parade of Homes, they serve Monument, Castle Rock, Parker & more.
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Kalin Construction
201 Columbine Street, Denver, CO 80206
As 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 ... read more
EcoMod
22303 Interstate 76 Frontage Road, Hudson, CO 80642
EcoMod 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 more
F9 Productions Inc.
825 Crisman Dr #100, Longmont, CO CO 80501
F9 Productions is a Colorado-based ADU architect and builder offering full-service design and construction. Award-winning firm handling residential, commercial, and ADU projects including garage conversions, interior design, and 3D visualization.<... read more
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.