Olerra Living Innovations

1495 Canyon Boulevard, Boulder, CO 80302 18.8 miles

The Smartest Modular ADU for your Backyard

Studio Shed

1500 Cherry Street, Louisville, CO 80027 10 miles

18 years in business Prefab Specialist Eco-Friendly

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 management.

Elmntl

4559 Ute Highway, Longmont, CO 80503 21.3 miles

Prefab Specialist Eco-Friendly

Elmntl builds modular ADUs across Denver and Colorado's Front Range. Specializing in detached ADUs, garage conversions, and in-law suites, they handle zoning, permitting, and installation with a 10-year structural warranty.

Studio Home by Studio Shed

1500 Cherry Street, Louisville, CO 80027 10 miles

Prefab Specialist

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.

Sunward Steel Buildings

6800 E. Hampden Ave., Denver, CO 80224 18.5 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.

EcoMod

22303 Interstate 76 Frontage Road, Hudson, CO 80642 20.2 miles

20 years in business Prefab Specialist Eco-Friendly

EcoMod is a Denver-based ADU builder offering sustainable, affordable housing using repurposed shipping containers. Models range from 320–800 sq ft, starting at $64,000. Homes are 9x stronger, last 200+ years, and cut construction costs by 30%.

TinyMod

8150 Gray Fox Dr, Evergreen, CO 80439 28.6 miles

Prefab Specialist

TinyMod (TMOD™) is an offsite development partner offering feasibility analysis, project management, and factory coordination for builders. Services support ADUs, modular communities, BFR, and missing middle housing with up to 60% faster build times.

Alpine ADU

6145 Broadway, Denver, CO 80216 8.1 miles

Eco-Friendly Luxury Builds Free Consultation

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.

Other cities in Colorado

What you need to know

Searching for top Prefab / Modular ADU ADU Contractors in Thornton, Colorado? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).

Working with a qualified Prefab / Modular ADU ADU Contractor in Thornton ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Prefab / Modular ADU professionals can guide you through every step.

Thornton homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Prefab / Modular ADU experts featured here bring local expertise and proven experience to help make your project a success.

Browse our listings to find the best Prefab / Modular ADU ADU Contractors in Thornton, Colorado, and get started today.

Prefab / Modular ADU near Thornton, CO