ADU Contractors near Littleton, CO
Prenvalley Builders
5180 Fox Street, Denver, CO 80216
13.2 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-efficient construction.
read more
Little Home Builder
12509 Lk Pt Ct, Longmont, CO CO 80504
40.9 miles
Little Home Builder is Colorado's dedicated ADU contractor, specializing in stick-built detached ADUs, garage conversions & studios. Full-service from zoning to warranty. Build time: 4–8 months. Financing options available.
read more
NAGY Design
2255 Sheridan Blvd. Unit C270, Edgewater, CO 80214
11.1 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.
read more
Building While Giving
2859 South Locust Street, Denver, CO 80222
7.5 miles
LITTLETON, LLC
6698 South Iris Street, Littleton, CO 80162
4.6 miles
Littleton Construction, LLC is a Denver Metro general contractor since 1994, offering remodeling, additions, kitchens, basements & more. A+ BBB rated, licensed & insured, with 5-star reviews and a 1-year workmanship warranty.
read more
DL Engineering Inc.
9100 West Jewell Avenue, Lakewood, CO 80232
7 miles
Denver 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 more
Kalin Construction
201 Columbine Street, Denver, CO 80206
9.5 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 you're interested in a detached ADU or another type of accessory dwelling unit, they specialize in ADU projects that can provide affordable housing and passive income.
read more
Olerra Living Innovations
1495 Canyon Boulevard, Boulder, CO 80302
32.4 miles
The Smartest Modular ADU for your Backyard
read more
North Hill by Toll Brothers
14133 Kearney Loop, Thornton, CO 80602
25.7 miles
Expert ADU contractors handle detached ADUs, garage conversions, granny flats, JADUs & in-law suites. From design and permitting to final inspection, experienced ADU builders ensure code-compliant, high-quality accessory dwelling unit construction.
read more
Custom ADU Builders LLC
6564 West Atlantic Avenue, Lakewood, CO 80227
8.8 miles
Custom ADU Builders, LLC is Denver's trusted ADU contractor offering detached ADUs, garage conversions, and home remodeling. Serving Aurora, Lakewood & more with transparent pricing and expert permitting support.
read more
5 Rings Construction
12446 Tomahawk Rd, Parker, CO 80138
14.6 miles
WestIron Construction
8060 Meade Street, Superior, CO 80031
17.4 miles
Elmntl
4559 Ute Highway, Longmont, CO 80503
42.5 miles
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.
read more
ADU 5280
440 Pennsylvania Street, Denver, CO 80203
9.3 miles
ADU 5280 is a Denver-based ADU design-build company since 2013, offering detached ADUs, garage conversions & home additions. They manage zoning, permits, design & construction for homeowners looking to boost property value.
read more
Krick Design Build
759 1/2 Elati Street, Denver, CO 80204
9.6 miles
Krick Design + Build is a Colorado Front Range residential design-build firm specializing in ADUs. Founded by Licensed Architect Matthew Krick, they've completed 57+ ADUs including backyard cottages, garage conversions, and in-law suites.
read more
Other cities in Colorado
What you need to know
Building an ADU in Littleton, Colorado: What You Need to Know
Nestled along the South Platte River and known for its charming historic downtown, Littleton, Colorado has become one of the Denver metro area's most desirable communities. As housing demand continues to grow across the Front Range, many Littleton homeowners are turning to Accessory Dwelling Units (ADUs) as a smart solution for adding living space, generating rental income, or housing family members. Finding the right ADU contractor in Littleton, CO is the critical first step toward making that vision a reality.
Littleton ADU Regulations and Zoning Requirements
Before breaking ground, homeowners must understand that Littleton has specific zoning codes governing ADU construction. The City of Littleton falls under its own municipal jurisdiction — separate from unincorporated Arapahoe or Jefferson County — meaning local rules apply. Key considerations include:
- Zoning district eligibility: ADUs are generally permitted in single-family residential zones, but homeowners should verify their specific parcel's zoning designation with the Littleton Community Development Department.
- Size limitations: Detached ADUs are typically limited in square footage relative to the primary dwelling, often capped around 1,000 square feet depending on lot size.
- Owner-occupancy requirements: Littleton may require that the property owner reside in either the primary home or the ADU.
- Setback and height restrictions: Detached structures must comply with rear and side yard setbacks, and height limits are enforced to maintain neighborhood character.
- Parking requirements: Additional off-street parking may be required when adding an ADU to a property.
A knowledgeable Littleton ADU contractor will be well-versed in navigating the city's permitting process through the Community Development Department, ensuring all plans meet the International Residential Code (IRC) as adopted by Colorado, along with any local amendments.
Types of ADUs Built in Littleton
Experienced ADU builders in Littleton typically work on several types of accessory dwelling units suited to the area's residential landscape:
- Detached ADUs: Standalone backyard cottages or garage conversions, popular in Littleton's established neighborhoods with larger lots.
- Attached ADUs: Additions connected to the primary home, ideal for homeowners wanting to maximize existing structure value.
- Basement ADUs: Conversions of existing basement space, a cost-effective option common in Littleton's older ranch-style homes.
- Garage Conversions: Transforming attached or detached garages into livable space while maintaining the neighborhood aesthetic.
Choosing the Right ADU Contractor in Littleton
When selecting an ADU contractor in Littleton, Colorado, look for professionals who are licensed with the State of Colorado, carry proper liability insurance, and have demonstrated experience with local permitting. The best contractors will handle everything from design and engineering to permit submission and final inspection, making the process seamless for homeowners in this competitive Front Range market.
With Littleton's strong property values and proximity to Denver, investing in an ADU is a financially sound decision — and the right contractor will ensure your project is completed on time, on budget, and fully compliant with all local regulations.