ADU Contractors near Boulder, CO
AAA Home Improvements, Inc.
10701 West Morrison Road, Lakewood, CO 80227
25.5 miles
AAA Home Improvements is a Denver ADU contractor building detached ADUs, garage conversions, basement units & in-law suites across the Front Range. They manage design, permitting & construction for homeowners in Denver, Lakewood, Arvada & Littleton.
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Alpine ADU
6145 Broadway, Denver, CO 80216
20.5 miles
Alpine ADU builds custom & prefab ADUs, garage conversions, and tiny homes across Greater Denver, Boulder, Fort Collins & Colorado Springs. Services include design, permits, and full construction management on Colorado's Front Range.
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Verified Builders
1660 Lafayette Street, Denver, CO 80218
24.1 miles
Verified Builders is a licensed Denver remodeling company offering ADU construction, kitchen & bathroom remodeling, basement finishing, and custom home builds. Serving Denver, Littleton, Aurora & more since 2016.
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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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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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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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Building While Giving
2859 South Locust Street, Denver, CO 80222
30.6 miles
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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Studio Home by Studio Shed
1500 Cherry Street, Louisville, CO 80027
8 miles
Studio Home by Studio Shed offers custom & prefab ADUs across Texas, including San Antonio, Austin, Dallas & Houston. Units range from studios to full living spaces. Permit costs vary: Dallas $3K–$8K, Houston $2.5K–$7.5K.
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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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Denver Custom ADU
10790 West 50th Avenue, Wheat Ridge, CO 80033
17.9 miles
Denver Custom ADU is a trusted ADU builder in Denver with 30+ years of experience. Led by Matt Brinn, they offer fixed pricing, monthly billing, proactive permitting, and commercial-grade standards for every residential ADU project.
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A2Z Builders
501 South Lipan Street, Denver, CO 80223
25.4 miles
A2Z Builders is a Denver-based, family-owned Class A General Contractor with 16+ years of experience. They specialize in ADU construction, custom home builds, kitchen, bathroom, and basement remodeling across the Denver metro area.
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L&D Construction
5151 Bannock Street, Denver, CO 80216
21.4 miles
L&D Construction builds ADUs across Denver, including detached units, garage conversions, and attached living spaces. Projects focus on multigenerational living, rental income, and accessibility, serving neighborhoods citywide with zoning-compliant, adaptable designs.
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Sunward Steel Buildings
6800 E. Hampden Ave., Denver, CO 80224
31.5 miles
Sunward Steel Buildings offers pre-engineered steel accessory dwelling units (ADUs), including granny flats and in-law suites. As a direct manufacturer, they provide customizable, code-compliant, affordable backyard cottage solutions across North America.
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Kindred Tiny Homes
1040 S Gaylord Ste, Denver, CO 80209
28.6 miles
Kindred 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.
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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.