ADU Contractors near Boulder, CO
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 t... read more
JT Home Building
1001 Bannock St Suite 416, Denver, CO 80204
24.5 miles
JT Home Building specializes in ADU construction with 15+ years of experience. Services include detached ADUs, garage conversions, granny flats & casitas. Custom solutions for rental income, family housing & property value growth.
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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 time... read more
Murphey's Hammer LLC
Greenwood Village, CO 80112
34.2 miles
Murphey's Hammer is a Denver-based contractor specializing in ADUs, home additions, garage builds & outdoor living spaces. Serving Denver Metro, Aurora, Littleton & more with personalized, quality craftsmanship.
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Kalin Construction
201 Columbine Street, Denver, CO 80206
26.2 miles
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
Studio Shed
1500 Cherry Street, Louisville, CO 80027
8 miles
Studio Home is a Colorado-based prefab ADU builder serving all 50 states. With 18+ years experience and 6,000+ projects, they offer panelized ADU kits, backyard studios, granny flats, and in-law suites with fixed pricing and full project managemen... read more
ADU Home Tour
6825 Eaton Street, Arvada, CO 80003
15.4 miles
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 ... read more
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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ADU4U
2422 Champa Street, Denver, CO 80205
23.5 miles
ADU4U is a veteran-owned ADU builder in Denver offering full-service accessory dwelling unit construction, planning, real estate, and financing. Build a granny flat, in-law suite, or detached ADU for rental income or multigenerational living.
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Building While Giving
2859 South Locust Street, Denver, CO 80222
30.6 miles
Prestige Contractors
115 Wilcox Street, Castle Rock, CO 80104
49.8 miles
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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Koeppen Construction
7845 Lookout Road, Longmont, CO 80503
5.5 miles
Koeppen Construction builds Accessory Dwelling Units (ADUs) in Longmont, CO, and nearby areas. Services include detached, attached, and garage conversion ADUs for rental, multigenerational living, or guest use. Permitting assistance included.
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Olerra Living Innovations
1495 Canyon Boulevard, Boulder, CO 80302
1.4 miles
The Smartest Modular ADU for your Backyard
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Vertical Contracting - Detached Garage Builders
516 South Xenon Court, Lakewood, CO 80228
22.9 miles
Vertical Contracting is a licensed full-service construction & remodeling company offering garage builds, ADU conversions, interior remodeling, pergolas, and flatwork. Known for quality craftsmanship and client-focused service.
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Alex Home Pro
4851 S Lisbon Way, Aurora, CO 80015
38.4 miles
Alex Home Pro builds attached, detached, garage conversion, junior, and internal ADUs. Services cover design, permitting, and construction tailored to each property. ADUs can generate rental income, house family, or add long-term property value.read more
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.