ADU Contractors near Boulder, CO
Revo Renovations LLC
2135 South High Street, Denver, CO 80210
28.4 miles
Denver homeowners can boost property value and earn rental income by building an ADU. 5280ADU, a division of Revo Renovations, offers full-service ADU construction, garage conversions, remodels, and more across Denver County.
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Easthope Design
Oro Valley, Fort Collins, CO 85755
39.2 miles
Easthope Design is a Fort Collins ADU design firm led by architect Richard Esteb. Specializing in custom ADUs, garage conversions & granny flats across Northern Colorado, they handle design, permits, zoning & construction supervision.
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F9 Productions Inc.
825 Crisman Dr #100, Longmont, CO CO 80501
14.4 miles
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.
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River North Basement Company
3629 Jason Street, Denver, CO 80211
22.3 miles
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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North Hill by Toll Brothers
14133 Kearney Loop, Thornton, CO 80602
18.4 miles
Expert 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.
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ADU 5280
440 Pennsylvania Street, Denver, CO 80203
25.3 miles
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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AAA Home Improvements
10701 West Morrison Road, Lakewood, CO 80227
25.5 miles
AAA Home Improvements is a Denver ADU contractor building detached, garage conversion, basement, above-garage, and attached ADUs across the Front Range. They manage design, permitting, and construction for homeowners seeking rental income, multigenerational living, or added property value.
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3R Services
10825 West 32nd Avenue, Wheat Ridge, CO 80033
19.7 miles
3R Services builds ADUs in Arvada, CO, including backyard cottages, garage conversions & in-law suites. Projects cost $80K–$250K, take 3–6 months, and include permitting, transparent pricing & a 1-year warranty.
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Sustainable Design Build
99 Inca Street, Denver, CO 80223
25.1 miles
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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Krick Design Build
759 1/2 Elati Street, Denver, CO 80204
24.6 miles
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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Superior Construction & Home Renovations
9815 Eagle Creek Circle, Commerce City, CO 80022
23.3 miles
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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Zelenka Development
1660 South Albion Street, Denver, CO 80222
28.7 miles
Zelenka Development is a licensed ADU builder and custom home contractor in the Denver metro area, offering ADU construction, garage conversions, renovations, and integrated design services with full permitting support.
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Rocky Mountain ADUs
Loveland, CO 80435
27.4 miles
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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ModernSpace ADU Construction Team Parker
10015 South Parker Road, Parker, CO 80134
40.9 miles
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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Jacques Family Construction
3500 Swanstone Drive, Fort Collins, CO 80525
37.5 miles
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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Other cities in Colorado
What you need to know
Building ADUs in Boulder's Progressive Urban Landscape
Boulder, Colorado is widely recognized as one of the most progressive and environmentally conscious cities in the nation. With its strict growth management policies, including the Boulder Valley Comprehensive Plan and the city's urban growth boundary, housing density has become a critical issue. Accessory Dwelling Units (ADUs) have emerged as a key solution to Boulder's housing shortage, and experienced ADU contractors in Boulder, CO play a vital role in helping homeowners navigate this unique landscape.
Boulder ADU Regulations and Zoning Requirements
Working with a knowledgeable ADU contractor in Boulder is essential because the city has specific rules governing ADU construction. Boulder's zoning code allows ADUs in most residential zones, but contractors must be well-versed in the following requirements:
- ADUs must comply with Boulder's Residential Design Standards
- Maximum size for a detached ADU is typically 1,000 square feet or 35% of the primary home's floor area
- Owner-occupancy requirements may apply depending on the zone district
- ADUs must meet energy efficiency standards aligned with Boulder's climate action goals
- Setback, height, and lot coverage restrictions must be carefully observed
Types of ADUs Boulder Contractors Build
Experienced ADU builders in Boulder, Colorado are skilled in constructing various types of accessory dwelling units to suit different property configurations and homeowner needs. The most common types include:
- Detached ADUs – Standalone structures in the backyard, popular in Boulder's established neighborhoods
- Attached ADUs – Units connected to the primary residence, often used for multigenerational living
- Basement ADUs – Conversions of existing basement space, a cost-effective option in many Boulder homes
- Garage Conversions – Transforming detached garages into livable ADU spaces
Why Hire a Local Boulder ADU Contractor?
Hiring a local ADU contractor in Boulder offers significant advantages. Local professionals understand the nuances of Boulder's permitting process through the City of Boulder Planning and Development Services department. They are familiar with the city's emphasis on sustainable building practices, including solar-ready construction and high-performance insulation standards that align with Boulder's 80% emissions reduction goal by 2050. A local contractor can also help homeowners take advantage of Boulder's ADU incentive programs and navigate neighborhood-specific design guidelines.
Investing in an ADU in Boulder
Given Boulder's consistently high property values and strong rental market — driven in part by the University of Colorado Boulder — adding an ADU can be an excellent financial investment. A well-built ADU can generate significant rental income while increasing overall property value. Working with a qualified, licensed ADU contractor in Boulder, CO ensures your project is completed efficiently, up to code, and built to last in Colorado's variable mountain climate.