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ADU Contractors near Boulder, CO
AAA Home Improvements, Inc.
10701 West Morrison Road, Lakewood, CO 80227 25.5 milesAAA 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 &a... read more
ADU4U
2422 Champa Street, Denver, CO 80205 23.5 milesADU4U 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.
read moreVertical Contracting - Detached Garage Builders
516 South Xenon Court, Lakewood, CO 80228 22.9 milesVertical 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.
read moreDL Engineering Inc.
9100 West Jewell Avenue, Lakewood, CO 80232 25.4 milesDenver ADUs (granny flats, garage conversions, in-law units) offer affordable housing density solutions. DL Engineering Inc. provides structural engineering, design, and permitting services for Denver accessory dwelling unit projects.
read moreWestIron Construction
8060 Meade Street, Superior, CO 80031 17 milesRocky Mountain ADUs
Loveland, CO 80435 27.4 milesNOCO Design Build
1275 Grant St, Denver, CO 80203 24.5 milesNOCO Design Build is a Colorado contractor offering full-service residential remodeling and construction, including kitchen and bathroom remodels, new construction, ADUs, basement finishing, garage conversions, and custom projects.
read moreAAA Home Improvements
10701 West Morrison Road, Lakewood, CO 80227 25.5 milesAAA 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, multige... read more
Original Roots Design + Build
383 Corona Street, Denver, CO 80218 25.6 milesCentral 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
Superior Construction & Home Renovations
9815 Eagle Creek Circle, Commerce City, CO 80022 23.3 milesSuperior 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
Alex Home Pro
4851 S Lisbon Way, Aurora, CO 80015 38.4 milesAlex 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
ADU Home Tour
6825 Eaton Street, Arvada, CO 80003 15.4 milesL&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
River North Basement Company
3629 Jason Street, Denver, CO 80211 22.3 milesRiver 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.
read moreRescue Restoration & Construction
1415 Park Avenue West, Denver, CO 80205 23.2 milesRescue Restoration specializes in constructing Additional Dwelling Units (ADUs) in Colorado. Their lead chief estimator can help design a custom ADU to fit your needs and financial goals. They are the lead resource in the Denver Metro area when it... read more
Other cities in Colorado
- Arvada
- Aurora
- Buena Vista
- Cañon City
- Castle Rock
- Colorado Springs
- Commerce City
- Denver
- Durango
- Edgewater
- Englewood
- Evergreen
- Fort Collins
- Grand Junction
- Greenwood Village
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.