ADU Contractors near Longmont, CO
Kindred Tiny Homes
1040 S Gaylord Ste, Denver, CO 80209
34.8 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 timelin... read more
FBC Remodel Denver
1205 South Platte River Drive, Denver, CO 80223
32.6 miles
FBC Remodel Denver uses a Design-Build model for home additions, integrating architects and contractors under one roof for efficient, accurate budgeting and clear communication. They handle permits, offer guaranteed pricing, 3D renderings, and man... read more
Koeppen Construction
7845 Lookout Road, Longmont, CO 80503
7.6 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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Mile High Construction
11012 Newark St., Commerce City, CO 80640
26.4 miles
Mile High Construction is a Denver Metro custom home builder with nearly 30 years of experience. Led by Jordan Barnett, they offer personalized design, sustainable building, and transparent communication, guiding clients from consultation to final... read more
NAGY Design
2255 Sheridan Blvd. Unit C270, Edgewater, CO 80214
29 miles
NAGY Design built a standout 2,200 sq ft detached ADU in Denver's Sloan's Lake, nominated for Best ADU 2022. Costs range $100K–$300K. Their full-service process covers planning, permits, and construction oversight.
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Easthope Design
Oro Valley, Fort Collins, CO 85755
28 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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Studio Shed
1500 Cherry Street, Louisville, CO 80027
14.1 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
A2Z Builders
501 South Lipan Street, Denver, CO 80223
32.2 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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ModernSpace ADU Construction Team Parker
10015 South Parker Road, Parker, CO 80134
46.3 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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Vertical Contracting - Detached Garage Builders
516 South Xenon Court, Lakewood, CO 80228
32.1 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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Rescue Restoration & Construction
1415 Park Avenue West, Denver, CO 80205
29 miles
Rescue 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
JT Home Building
1001 Bannock St Suite 416, Denver, CO 80204
30.7 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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Prenvalley Builders
5180 Fox Street, Denver, CO 80216
27.8 miles
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
Prospect 30 Eight Construction Inc
2944 Routt Circle, Lakewood, CO 80215
35.8 miles
Prospect 30 Eight Construction proudly offers its high-quality building services to the charming community of Littleton. Known for its unique blend of suburban tranquility and easy access to metropolitan conveniences, Littleton is the ideal settin... read more
F9 Productions Inc.
825 Crisman Dr #100, Longmont, CO CO 80501
2.2 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.<... read more
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What you need to know
ADU Contractors in Longmont, Colorado: Your Guide to Accessory Dwelling Units
If you're considering adding an accessory dwelling unit (ADU) to your property in Longmont, Colorado, you're making a smart investment. With Longmont's growing population and increasing housing demand along the Front Range, ADUs have become one of the most popular ways to maximize property value, generate rental income, or create space for multigenerational living. Finding the right ADU contractor in Longmont is the critical first step toward turning your vision into reality.
Why Build an ADU in Longmont, CO?
Longmont offers a unique blend of small-town charm and proximity to Boulder and Denver, making it a highly desirable place to live. The city has seen consistent growth, and rental demand remains strong. Building an ADU in Longmont allows homeowners to:
- Generate passive rental income in a competitive rental market
- House family members while maintaining privacy
- Increase overall property value significantly
- Contribute to Longmont's affordable housing solutions
- Utilize underused backyard or garage space efficiently
Longmont ADU Regulations and Zoning Requirements
Before breaking ground, it's essential to understand Longmont's ADU regulations. The City of Longmont permits ADUs in most residential zones, but there are specific rules that experienced ADU contractors in Longmont must navigate carefully. Key regulations include:
- Owner-occupancy requirements: In many zones, the property owner must occupy either the primary residence or the ADU.
- Size limitations: Detached ADUs are generally limited in square footage relative to the primary dwelling, typically not exceeding 1,000 square feet.
- Setback requirements: ADUs must comply with specific setback rules from property lines, which vary by zone designation.
- Parking requirements: Additional off-street parking may be required depending on the ADU type and location.
- Design standards: ADUs must be architecturally compatible with the primary structure and surrounding neighborhood.
A knowledgeable Longmont ADU contractor will be familiar with the city's permitting process through the Longmont Building and Safety Division, ensuring your project meets all local codes and avoids costly delays.
Types of ADUs Built in Longmont
Skilled ADU builders in Longmont, CO can construct several types of accessory dwelling units to suit your property and goals. The most common types include detached ADUs (standalone backyard cottages), attached ADUs (additions connected to the main home), garage conversions, and basement ADUs. Each type comes with its own set of construction considerations, costs, and permitting requirements.
Choosing the Right ADU Contractor in Longmont
When selecting an ADU contractor in Longmont, Colorado, look for professionals with proven local experience, proper licensing, and a strong portfolio of completed ADU projects in the area. The best contractors will guide you through design, permitting, construction, and final inspection — delivering a high-quality ADU that complies with all Longmont municipal codes and maximizes your investment.