ADU Journal

Builder Directory

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

135 builders
Jo

Joel and Co Construction

General Contractor
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Joel and Co. Construction is a Los Angeles-based general contractor with over 50 years of experience and more than 7,000 completed projects since 1983, offering a full range of services including ADU and room additions, custom home building, and commercial construction. The firm distinguishes itself through a client-first approach emphasizing integrity and transparency, working collaboratively with clients, architects, engineers, and designers to deliver refined, well-built homes. Its service portfolio spans new construction, renovations, and accessory dwelling units, positioning it as a comprehensive builder serving the greater Los Angeles market.

πŸ“Los Angeles Westside including Beverly Hills and Santa Monica. πŸ—“6 to 14 months
Free Consult Permits Turnkey
Jo

Jorden Corporation

Design-Build Firm
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This San Antonio and Texas Hill Country-based builder specializes in custom luxury homes and comprehensive remodeling services, positioning itself as a full-service, turnkey partner for high-end residential projects. Jorden Corporation distinguishes itself through hands-on expertise in managing complex builds and renovations that reflect clients' individual visions and the character of their land. While the company's primary focus is custom home construction rather than ADUs, its capabilities in luxury residential design and comprehensive project management could apply to higher-end accessory dwelling unit development in its regional market.

πŸ“San Antonio and Texas Hill Country. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Ka

Kanga Room Systems

Prefab / Modular
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This Texas-based manufacturer designs and produces prefabricated backyard structuresβ€”including ADUs, guest houses, cabins, and studiosβ€”with over 30 years of engineering expertise behind its modern and cottage-style kits. Kanga Room Systems offers flexible options ranging from DIY kits to fully finished turnkey installations, shipping prefab kits nationwide while providing complete builds throughout Texas. The company distinguishes itself through customizable design choices, multiple finish levels, and a commitment to high-quality, aesthetically considered wood construction that serves residential, commercial, and lifestyle needs.

πŸ“Texas statewide. Kits ship nationally. πŸ—“Weeks to months
Free Consult Permits Turnkey
Ka

Katz Design Builders

Design-Build Firm
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This second-generation family-owned design/build firm operates across Los Angeles and Orange County, offering ADU conversion and construction alongside broader home remodeling services including kitchen and bathroom renovations, pools, and hardscaping. Katz Design & Builders emphasizes a collaborative approach that balances client input with expert guidance, managing projects from design through completion with on-site oversight and transparency. The company distinguishes itself through its commitment to combining quality materials with cost efficiency while maintaining high construction standards throughout every phase.

πŸ“Westchester County and Yonkers New York. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Ki

Kingdom Builders DFW

General Contractor
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This Dallas-Fort Worth–based commercial construction firm specializes in large-scale retail, restaurant, office, and institutional projects rather than ADUs, with a portfolio including national brands like Starbucks and Trader Joe's alongside medical facilities and commercial buildouts. While the company emphasizes integrity and communication across renovation and ground-up construction work, it does not appear to offer ADU-specific products or services based on available information. ADU Journal readers should note this firm is primarily focused on commercial real estate development outside the accessory dwelling unit sector.

πŸ“Dallas-Fort Worth Texas metro area. πŸ—“6 to 12 months
Free Consult Permits Turnkey
La

Lasley Brahaney Architecture

Design-Build Firm
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Based on the provided materials, Lasley Brahaney Architecture + Construction is a Princeton, New Jersey-based residential firm specializing in home renovations, additions, and new construction with a design-build approach that integrates architecture and construction expertise. The company distinguishes itself through meticulous attention to historic preservation and custom additions, as evidenced by award-winning projects including landmark home restorations and 2024 Contractor of the Year honors. Lasley Brahaney offers flexible service optionsβ€”architecture only, construction only, or full design-buildβ€”positioning itself as a comprehensive solution for homeowners seeking to enhance their living spaces.

πŸ“Princeton and Central New Jersey. πŸ—“8 to 14 months
Free Consult Permits Turnkey
Li

Little Home Builder

General Contractor
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This Colorado-based builder specializes exclusively in accessory dwelling units, offering detached and attached ADUs, garage conversions, and studio/office spaces designed to meet local zoning requirements. The company manages the complete process from site assessment through permitting and construction, leveraging expertise in navigating Colorado's complex zoning ordinances and county regulations while using stick-built construction methods. Little Home Builder differentiates itself through pre-reviewed, customizable floor plans and a comprehensive warranty package including 7-year structural coverage, allowing homeowners to generate rental income or create multi-generational housing with reduced time and cost burden.

πŸ“Colorado statewide. πŸ—“4 to 8 months
Financing Free Consult Permits Turnkey
Li

Live Modal

Prefab / Modular
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Live Modal, based in Salt Lake City, specializes in modular ADU designs built with future expansion in mind, allowing homeowners to add rooms or enlarge their units as needs and budgets evolve. The company's entry-level offering begins at $240,000 for a single-room floor plan with permits and finishes included, serving the Utah market with a core emphasis on adaptability and scalability. This focus on expandable architecture distinguishes Live Modal in a market where most manufacturers prioritize fixed footprints.

πŸ“Utah and Mountain West. πŸ—“6 to 10 months
Free Consult Permits Turnkey
Li

LivLab Studios

Prefab / Modular
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This Albuquerque-based modular home builder specializes in compact ADUs designed with sustainability, smart space efficiency, and adaptability as core principles, positioning their homes as more durable and functionally optimized alternatives to traditional site-built construction. LivLab Studios serves New Mexico markets, particularly cities updating codes to permit accessory dwelling units, and emphasizes design philosophy that prioritizes quality and livability over square footage.

πŸ“Albuquerque and New Mexico. πŸ—“3 to 8 months
Free Consult Permits Turnkey
Ma

Masaya Homes

Prefab / Modular
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This manufacturer specializes in turnkey ADUs and single-family homes constructed from sustainably sourced, reforested solid teak using a proprietary panelized system that eliminates the need for cranes during installation. Operating primarily in the Los Angeles area, the company delivers fully outfitted units ranging from 300-square-foot studios to 800-square-foot two-bedroom homes, with each project designed to support both residential infill and disaster recovery initiatives. Masaya's distinctive approach combines environmental stewardship with accessibility, offering flat-packed delivery and complete installation services that appeal to homeowners seeking sustainable housing solutions with minimal site disruption.

πŸ“California and national. πŸ—“4 to 8 months
Free Consult Permits Turnkey
Ma

Mass ADU

General Contractor
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Mass ADU is a Massachusetts-based construction company offering comprehensive ADU services spanning feasibility assessments, permitting assistance, and full construction across the state. The company distinguishes itself by guiding homeowners through the entire development process, from initial free consultation through project completion, with an emphasis on making ADUs practical and accessible solutions for long-term housing and financial needs. Mass ADU positions itself as a full-service partner designed to demystify ADU development for residential clients.

πŸ“Massachusetts statewide. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Ma

Master Remodelers LLC Houston

General Contractor
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This Houston-based builder leverages three decades of experience to construct ADUs, casitas, and guest homes for homeowners seeking rental income, multigenerational living, or guest accommodations. The firm distinguishes itself through its A+ BBB rating, lifetime warranty on all work, and zero-percent financing options, while maintaining full licensing and insurance across the Greater Houston market.

πŸ“Houston Texas. πŸ—“6 to 12 months
Financing Free Consult Permits Turnkey
MB

MBA Builders

General Contractor
β†’

A full-service custom home builder and renovation specialist based in Wakefield, Massachusetts, this firm serves the greater Boston area with a client-first philosophy centered on trust, quality craftsmanship, and proactive communication. The company differentiates itself through an in-house proprietary design-build process that streamlines projects, combined with founder-led expertise in effective project management and meticulous attention to detail. Specializing in custom homes and renovations that accommodate clients' unique lifestyles, the firm emphasizes establishing long-term relationships through transparent representation of client interests throughout all project phases.

πŸ“Greater Boston and Massachusetts statewide. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Mi

Mighty Buildings

Prefab / Modular
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Mighty Buildings manufactures 3D-printed exterior wall systems designed for rapid assemblyβ€”complete walls in as little as three daysβ€”with both residential load-bearing and commercial applications. The company's Mighty Wall System emphasizes speed, resilience, and sustainability, offering fire, wind, and seismic-certified panels that reduce labor requirements and construction costs while pursuing carbon neutrality. Operating under parent company LUMUS INC, the manufacturer serves residential and commercial markets with customizable solutions that integrate seamlessly into various building designs and scales.

πŸ“California. Expanding nationally. πŸ—“4 to 6 months
Financing Free Consult Permits Turnkey
Mi

Millan Construction San Diego

General Contractor
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This San Diego-based construction firm specializes in ADU construction, home remodeling, and permit management, positioning itself on transparency and straightforward pricing rather than hidden costs. Millan Construction serves residential and small commercial clients throughout the San Diego area, emphasizing clear communication and quality craftsmanship across projects ranging from small renovations to large-scale builds. The company distinguishes itself through its focus on problem-solving and staying current with industry innovations while maintaining strong relationships with vetted subcontractors and staff.

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

Minnehaha Remodeling

General Contractor
β†’

This Minneapolis-based contractor specializes in custom ADU design and construction tailored to individual client needs and intended use across the Twin Cities region, including Minneapolis, St. Paul, and surrounding communities. The firm brings deep expertise in the local inspection and permitting process, positioning itself as a trusted partner for homeowners navigating regulatory requirements. Beyond ADUs, the company also handles home additions, leveraging its established reputation as a full-service residential contractor.

πŸ“Minneapolis-St. Paul metro Minnesota. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Mo

Modern Empathy

Prefab / Modular
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πŸ“California statewide. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Na

Nashville Garage Builders

General Contractor
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This Middle Tennessee contractor specializes in garage-based DADUs designed for offices, guest rooms, music studios, and rental income, with the flexibility to build ADUs with or without integrated garage components. Operating throughout Davidson County and surrounding regions, the firm brings focused expertise in navigating Nashville's specific construction costs and local building requirements. The company's garage-conversion approach offers homeowners a practical pathway to ADU development on existing properties.

πŸ“Davidson County and Middle Tennessee. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Pe

Penn Construction and Design

Design-Build Firm
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This Philadelphia-based design-build firm specializes in detached ADUs and guest houses, offering full-service capabilities from initial design through final construction. The company brings deep expertise in navigating the city's complex zoning codesβ€”particularly RSA-5 and CMX-1 district requirementsβ€”and the Philadelphia L&I permit process. Known for high customer satisfaction ratings on Yelp, the firm serves the greater Philadelphia region with projects tailored to local regulatory environments.

πŸ“Philadelphia Pennsylvania and surrounding areas. πŸ—“6 to 12 months
Free Consult Permits Turnkey
Ph

Phoenix ADU Solutions

General Contractor
β†’

Phoenix ADU Solutions provides comprehensive ADU services across the Phoenix, Arizona market, including attached and detached units, garage conversions, design, and permitting. The company distinguishes itself through tailored design solutions, integration of sustainable building practices, and deep expertise in local Phoenix building codes and zoning regulations. From initial concept through project completion, the firm handles the full scope of ADU development with emphasis on compliance and environmental efficiency.

πŸ“Phoenix Arizona and surrounding valley communities. πŸ—“6 to 12 months
Free Consult Permits Turnkey
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