ADU Journal

Builder Directory

Find prefab manufacturers, design-build firms, and contractors serving your area.

135 builders
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Ballard Backyard Cottages

Design-Build Firm
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This Seattle-based builder specializes in detached ADUs (DADUs) and backyard cottages, offering a full-service approach that encompasses design, permitting, construction, and interior design. The company distinguishes itself through pre-approved design options alongside custom builds, transparency around construction costs, and a focus on aging-in-place solutions for homeowners. Their portfolio spans residential ADUs, custom backyard structures, and specialty conversions throughout the Seattle area.

πŸ“Seattle Washington. πŸ—“5 to 10 months
Free Consult Permits Turnkey
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Bedrock Tiny Homes Texas

General Contractor
β†’

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πŸ“Austin and Central Texas. πŸ—“4 to 9 months
Free Consult Permits Turnkey
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Better Place Design Build

Design-Build Firm
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Better Place Design Build approaches ADU development in San Diego through a feasibility-first methodology that validates zoning compliance, utility availability, and site conditions before providing estimates, minimizing cost overruns. The contractor specializes in detached ADUs, garage conversions, and room additions while maintaining expertise in the region's specific regulatory landscape, including the state's 4-foot setback requirements. This combination of thorough pre-design vetting and localized regulatory knowledge positions the firm to navigate San Diego's complex and evolving ADU rules efficiently.

πŸ“San Diego California. πŸ—“6 to 10 months
Free Consult Permits Turnkey
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BLDG Projects

Design-Build Firm
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BLDG Projects is a Chicago-based architecture and design firm that focuses on mixed-use residential and commercial development across the city's neighborhoods. The firm's portfolio encompasses multi-family residential buildings, ground-floor commercial spaces, interior renovations, and adaptive reuse projects, with a particular emphasis on infill development and neighborhood-scale projects. While primarily serving the Chicago market, the firm positions itself as a "National Architect" capable of managing complex urban design challenges including high-rise, commercial, and residential projects.

πŸ“Chicago Illinois pilot zones. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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Blue Cannon Builders

General Contractor
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Blue Cannon Builders is a Reno, Nevada-based custom home and ADU specialist offering full-service design, permitting, and construction with a focus on transparent pricing and on-time, on-budget delivery. The firm leverages deep local expertise in Nevada zoning regulations and permitting processes to navigate complex regulatory environments for both residential and commercial clients across the state. Known for craftsmanship and direct client communication, Blue Cannon positions itself as a problem-solver in a market where permitting barriers often delay or derail ADU projects.

πŸ“Reno and Nevada statewide. πŸ—“5 to 10 months
Free Consult Permits Turnkey
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Boxabl

Prefab / Modular
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Boxabl manufactures the Casita, a foldable, factory-built ADU available in studio, one-, and two-bedroom configurations designed for rapid deployment and mass production. The company serves diverse markets including residential developers, public sector agencies, and individual homeowners, with units priced from $399–$895 monthly through financing options. Recently merging with FGMC to go public, Boxabl positions its modular approach as a scalable solution to housing shortages across the United States.

πŸ“National. Currently limited production with waitlist. πŸ—“Days to weeks for installation
Free Consult
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Bradley Knapp Homes

General Contractor
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This Southeast-focused builder specializes in detached ADUs, custom homes, and related residential structures, offering both standard designs and fully customized layouts tailored to individual properties and client needs. Operating primarily across South Carolina and the broader Southeast, the company emphasizes streamlined construction processes, on-site building, and white-glove service to simplify project delivery and reduce costs. Bradley Knapp Homes also provides lending services and positions itself on versatility, serving homeowners seeking guest quarters, rental units, home offices, and accessory structures.

πŸ“South Carolina statewide. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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Build Native

General Contractor
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Build Native is a custom luxury home builder serving Austin, Central Texas, and the Hill Country since 2007, specializing in net-zero and energy-efficient homes that integrate sustainable features like solar power and rainwater catchment systems. The company distinguishes itself as an industry leader in green homebuilding, combining high-end design and craftsmanship with modern sustainability practices to create homes that achieve energy independence without compromising luxury. Build Native's approach emphasizes personalized design collaboration, close project management, and quality construction backed by comprehensive warranties.

πŸ“Austin and Central Texas. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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BuildCo7 Nashville

General Contractor
β†’

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πŸ“Nashville Tennessee. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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Built by Design Construction

General Contractor
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This Utah-based ADU builder specializes in custom designs tailored to individual properties, with particular expertise navigating Salt Lake County's permitting landscape, including recent amendments allowing detached units up to 1,000 square feet and garage-top ADUs. The company leverages established relationships with local building officials to streamline approvals and serves most areas throughout Salt Lake County and broader Utah. Built by Design Construction distinguishes itself through personalized project execution rather than standardized floor plans, positioning it as a go-to partner for homeowners seeking compliant, site-specific ADU solutions in the region.

πŸ“Salt Lake County and Utah statewide. πŸ—“3 months permitting plus construction
Free Consult Permits Turnkey
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California Modulars

Prefab / Modular
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This State of California HCD-licensed manufacturer and general contractor specializes in custom modular ADUs and homes built to order in California, emphasizing rapid delivery within six months and design customization across multiple price points. The company operates as a full-service builder offering turnkey solutions with decades of combined experience in modular construction technology and project management. Their distinctive approach combines factory efficiency with on-site general contracting expertise to streamline the building process for residential and commercial applications.

πŸ“California statewide. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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Carson Custom Homes San Antonio

General Contractor
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This San Antonio-based design-build firm specializes in custom home construction and remodeling across the Texas Hill Country and northern San Antonio, serving communities including Boerne, Helotes, and Fair Oaks. Carson Custom Homes offers a full-service approach encompassing custom home design, whole-home renovations, additions, ADUs, and comprehensive outdoor living solutions including custom kitchens and entertainment spaces. The builder focuses on architectural styles ranging from modern and transitional to Tuscan and modern farmhouse, emphasizing personalized design and expert craftsmanship tailored to regional climate and client needs.

πŸ“San Antonio Texas. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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Casita ADU San Diego

General Contractor
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This California-based construction management firm specializes in full-service ADU development, handling design, permitting, and construction oversight for homeowners across the state. Casita's distinctive approach consolidates the entire ADU process under one roof, eliminating the need for multiple contractors while managing timelines, budgets, and quality control from initial consultation through final delivery. The company offers pre-approved design plans, comprehensive permitting packages, and in-house construction management, positioning itself as a turnkey solution for converting residential backyard spaces into income-generating units.

πŸ“San Diego County California. πŸ—“6 to 10 months
Free Consult Permits Turnkey
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Casitas by Las Ventanas

General Contractor
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Casitas by Las Ventanas specializes in accessory dwelling units across the Albuquerque and Rio Rancho markets, offering both pre-approved standard floor plans (500–700 sq ft, priced from $179,000) and fully customized designs. The company differentiates itself through rapid turnaround timesβ€”90 days or less for standard plansβ€”comprehensive site analysis, in-house design and permitting services, and a commitment to universal accessibility with 32-inch minimum doorways and step-free layouts. Their approach combines streamlined efficiency for buyers seeking quick solutions with extensive customization options for those with specific visions, all backed by local construction expertise.

πŸ“Albuquerque New Mexico. πŸ—“5 to 10 months
Free Consult Permits Turnkey
CA

CASK Construction

Design-Build Firm
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This St. Petersburg-based design-build firm specializes in custom homes, ADUs, garage apartments, and residential additions, serving homeowners throughout the local market with an integrated, in-house team that manages projects from concept through completion. CASK Construction distinguishes itself through dedicated project management, deep familiarity with St. Petersburg's permitting and zoning requirements, and an emphasis on transparent communication and long-term value. The company's service model prioritizes intentional design and craftsmanship across residential projects of varying scope, from ground-up construction to strategic property expansions.

πŸ“St. Petersburg and Tampa Bay Florida. πŸ—“4 to 8 months
Free Consult Permits Turnkey
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Charleston ADU Co

General Contractor
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This Charleston-area builder specializes in affordable ADU construction across the Lowcountry, offering attached units, detached structures, and garage conversions completed within a six-month timeline. The company differentiates itself through transparent pricing, free site evaluations and custom 3D design renderings, and a one-year builder's warranty, while also facilitating financing options including 18-month deferred payment plans. Charleston ADU Co serves homeowners throughout the greater Charleston region seeking to add rental income and property value through new ADU construction or room additions.

πŸ“Charleston South Carolina. πŸ—“6 months guarantee
Financing Free Consult Permits Turnkey
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Charlotte ADU Builders

General Contractor
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Charlotte ADU Builders specializes in accessory dwelling unit construction throughout the Charlotte, North Carolina metro area, addressing what the company identifies as a significant gap in local housing resources. Founded by Bryan Alenky, a developer with over a decade of experience building more than 100 residential projects across neighborhoods including Myers Park and Dilworth, the firm brings established expertise in navigating regional building codes and regulations. The builder offers high-end ADU construction alongside detached garages and pool homes, positioning itself as the area's dedicated specialist in residential accessory structures.

πŸ“Charlotte North Carolina metro area. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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Clarksville Construction Maryland

General Contractor
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This Maryland-based full-service remodeler specializes in outdoor living spaces including decks, patios, porches, screen rooms, and pool structures, though its service offerings extend to interior renovations such as bathrooms and basements. The company distinguishes itself through comprehensive project management, transparent pricing with no hidden costs, and consistent attention to detail across all phases from initial consultation through final walkthrough. Operating exclusively in Maryland, Clarksville Construction maintains high customer satisfaction ratings across multiple review platforms and emphasizes professional craftsmanship and proactive communication throughout every project.

πŸ“Maryland statewide. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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COOPER Design Build

Design-Build Firm
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With over 30 years of experience, COOPER Design Build serves the Portland, Oregon area as a full-service design-build firm specializing in comprehensive home transformations, including ADUs, historic restorations, and luxury remodels. The company integrates design and construction disciplines under one roof to manage projects from initial concept through completion, emphasizing craftsmanship, communication, and adherence to timelines and budgets. Their service range spans kitchen and bath renovations, home additions, aging-in-place modifications, and accessory dwelling units, positioning them as a versatile contractor for Portland-area homeowners seeking coordinated design-build solutions.

πŸ“Portland Oregon and Pacific Northwest. πŸ—“5 to 10 months
Free Consult Permits Turnkey
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Cornerstone Builders Oregon

General Contractor
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This Washington County, Oregon-based design-build contractor has offered custom home construction, remodeling, and ADU services since 2003, serving the Portland metropolitan area including Tigard, West Linn, Lake Oswego, and surrounding communities. Cornerstone Builders emphasizes a full-service approach that spans conception through completion, featuring 3D digital modeling, budget-conscious design, and craftsmanship across kitchen and bathroom remodels, home additions, whole-home renovations, and new construction. The company holds a 4.9-star rating and positions itself as a generalist builder capable of executing both traditional and contemporary architectural styles.

πŸ“Washington County and greater Portland Oregon. πŸ—“6 to 10 months
Free Consult Permits Turnkey
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