Builder Directory

Sustainable Design Build is a Denver-based design-build firm that offers comprehensive ADU, home addition, and remodel services through an integrated team of architects, interior designers, project managers, and general contractors. The company distinguishes itself through a streamlined in-house process designed to reduce upfront costs and accelerate project timelines, while maintaining a commitment to environmentally conscious construction practices and material recycling. Operating as an award-winning firm, the company emphasizes transparent communication and collaborative design with clients to achieve customized results.

This licensed ADU contractor operates from Covina and serves the Greater Los Angeles metropolitan area with comprehensive design and construction services spanning garage conversions, detached units, junior ADUs, additions, and remodels. The company manages projects end-to-end, from initial design through final inspection, offering homeowners a streamlined full-service approach to ADU development. Its local expertise and diverse project types position it as a regional specialist in the LA market.

Based in Colorado, Timberline Building Group is a design-build contractor specializing in ADUs and barndominiums alongside custom homes, remodels, and outdoor living spaces. The firm distinguishes itself through in-house project management, comprehensive permit and inspection oversight, and a commitment to personalized communication throughout the construction process. Operating since 2014, the company serves the Denver metro area and broader Colorado region with a focus on tailored designs suited to Colorado's landscape and lifestyle.

This Minnesota-based design-build contractor specializes in luxury residential and commercial remodeling, with a notable focus on accessory dwelling units alongside home additions, foundational spaces, and specialized rooms like golf simulators and home gyms. Operating as a full-service firm, Titus Contracting emphasizes integrated design-build processes that balance aesthetics with everyday functionality, serving clients throughout Minnesota. The company distinguishes itself through intentional craftsmanship and clear communication from initial consultation through final construction, positioning ADUs within a broader portfolio of high-end residential expansion projects.

This Western Washington-based builder and remodeler offers ADUs alongside custom homes, kitchen and bathroom remodels, additions, and outdoor living spaces, positioning itself as a full-service residential construction firm. TN Miller distinguishes itself through a transparent, collaborative 10-step process that emphasizes client involvement from pre-design through construction, including competitive interviews and joint budgeting rather than top-down estimates. The company leverages decades of family-legacy experience to deliver what it frames as stress-free building experiences centered on craftsmanship and functional design.

Tuff Shed manufactures factory-direct sheds, garages, and recreational buildings delivered and installed on-site, operating since 1981 with over a million structures built. The company serves a national market and distinguishes itself through its Build-A-Quote 3D configurator, which allows customers to design, price, and customize buildings before purchase. Its product range extends beyond residential storage to include commercial structures, positioning it as a diversified building solutions provider rather than a traditional shed manufacturer.

This Seattle-area design-build firm specializes in full-service residential remodeling and new construction, including ADU building, with in-house design and project management capabilities. United Signature serves the greater Seattle metropolitan region and emphasizes premium materials and end-to-end construction oversight across kitchen, bathroom, whole-home, and custom home projects. The firm has completed over 5,000 projects in its 20-year history, positioning itself as an integrated alternative to hiring separate architects and contractors.

UP Craftsmen is an ADU builder headquartered near Silver Spring, Maryland, specializing in permit-to-completion custom projects throughout Montgomery County. The firm distinguishes itself through a design-focused approach it calls "Better by Design," offering versatile freestanding structures tailored to diverse uses including residential, professional, and leisure applications, alongside related services like kitchen and bathroom remodeling and home additions. The company provides ADU feasibility studies and emphasizes streamlined processes and on-time project delivery across its product range.

This Nashville-based ADU and DADU specialist curates one- and two-bedroom models tailored to local market conditions while handling the complete project lifecycle from feasibility assessment through permitting, construction, and post-completion warranty. The company emphasizes transparent, fixed-scope pricing and proactive client communication, with particular focus on maximizing rental market returns for both short- and long-term Nashville tenants.

This Fort Worth-based contractor specializes in detached ADUs, garage conversions, and in-law suites throughout the Dallas-Fort Worth metropolitan area, offering services ranging from feasibility studies and shell packages to full turnkey construction. The firm distinguishes itself through deep expertise in Fort Worth and Tarrant County ADU regulations and provides investment-focused strategies for property owners seeking to maximize returns on ADU projects. Valor Building Solutions DFW serves homeowners and investors across the DFW region with comprehensive ADU solutions tailored to local zoning and permitting requirements.

Villa Homes delivers full-service prefab ADUs across 10+ floor plans ranging from 440 to 1,200 square feet, with HUD approval and transparent turnkey pricing that encompasses permitting, site work, delivery, and installation. The company equips all units with Energy Star appliances as standard and offers wildland-urban interface fire compliance options for high-risk regions. Beyond single-family clients, Villa Homes serves multifamily developers and institutional buyers seeking scalable ADU solutions.

This California-based manufacturer specializes in customizable prefab ADUs, houses, sheds, and saunas, handling the entire project lifecycle from design through turnkey installation with fixed, all-inclusive pricing. Wellmade distinguishes itself through vertical integration—managing permitting, construction, and warranty support in-house—and a commitment to sustainability, achieving 85% less waste in production while maintaining a five-year warranty. The company serves California homeowners seeking modern, modular housing solutions with typical ADU timelines of two to three months and shed installations completed in five to eight days on-site.

This San Diego-based builder offers comprehensive design-build services for accessory dwelling units, including granny flats, in-law suites, and backyard cottages throughout San Diego County. The firm distinguishes itself through deep knowledge of local ADU regulations and financing programs, including navigation of the city's up to $250,000 ADU loan program and waived development fee opportunities. Their full-service approach addresses both design and construction phases across all ADU types for homeowners in the region.

This New York-based modular home manufacturer specializes in fully customizable residential units across multiple architectural styles, from ranches and colonials to townhouses and multi-unit rental properties. The company distinguishes itself through factory-controlled construction that allows simultaneous foundation and home building, significantly accelerating project timelines compared to traditional stick-built methods. Westchester Modular works with builders, developers, and individual homeowners, offering either pre-designed plans or complete custom design services in collaboration with architects.

This Pennsylvania-licensed general contractor brings in-house expertise across surveying, architecture, drafting, project management, and construction to handle ADU development in the Pittsburgh market. The firm specializes in both attached additions and detached units, serving clients seeking rental income or multigenerational housing solutions while navigating the region's complex zoning codes and property restrictions. Willner Enterprises' deep knowledge of Pittsburgh's municipal regulations positions it to guide projects through local approval processes that often challenge ADU development in the area.