All Builders

ADU COACH CONSTRUCTION

ADU COACH CONSTRUCTION is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Oakdale, CA (Stanislaus County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1136560. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

WESTLAKE ADU CONSTRUCTION

WESTLAKE ADU CONSTRUCTION is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Newcastle, CA (Placer County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1139591. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

ADU BUILDER HEROES

ADU BUILDER HEROES is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Vista, CA (San Diego County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1142131. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

ADU 4 YOU

ADU 4 YOU is a CSLB-licensed California contractor holding Class B (General Building) licenses based in West Hills, CA (Los Angeles County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1143833. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

ZOOM ADU INC

ZOOM ADU INC is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Carlsbad, CA (San Diego County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1145664. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

EPIC ADU'S AND CONSTRUCTION

EPIC ADU'S AND CONSTRUCTION is a CSLB-licensed California contractor holding Class ASB, B (General Building), C36 licenses based in Moorpark, CA (Ventura County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #1146132. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

UDA ADU

UDA ADU is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Los Altos, CA (Santa Clara County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1146840. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

INVESTADU CONSTRUCTION

INVESTADU CONSTRUCTION is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Yucaipa, CA (San Bernardino County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1147021. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

ADU-CONTAINER CONSTRUCTION COMPANY

ADU-CONTAINER CONSTRUCTION COMPANY is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Irvine, CA (Orange County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1147898. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

PADUANO ANTHONY GENERAL CONTRACTOR

PADUANO ANTHONY GENERAL CONTRACTOR is a CSLB-licensed California contractor holding Class B (General Building), D41 licenses based in Newport Beach, CA (Orange County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #908879. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

RADU CONSTRUCTION GROUP

RADU CONSTRUCTION GROUP is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Glendale, CA (Los Angeles County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1150911. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

RADU TOM CONSTRUCTION

RADU TOM CONSTRUCTION is a CSLB-licensed California contractor holding Class B (General Building), C33 licenses based in Monrovia, CA (Los Angeles County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #540874. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

ADU365

ADU365 is a CSLB-licensed California contractor holding Class B (General Building), C27 licenses based in Santa Ana, CA (Orange County). The license carries a $25,000 contractor's bond. CSLB License #954356. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

SACRAMENTO VALLEY ADU BUILDERS

SACRAMENTO VALLEY ADU BUILDERS is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Folsom, CA (Sacramento County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #750817. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

SpecLand ADU Builders

The only builder in New York City focused on helping homeowners design and build ADUs, and delivering thoughtful solutions that add value, flexibility, and peace of mind.

ADU SOLUTIONS LA

ADU SOLUTIONS LA is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Upland, CA (San Bernardino County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #886840. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

A MAYBERRY ADU

A MAYBERRY ADU is a CSLB-licensed California contractor holding Class A, B (General Building), C20, C36 licenses based in Santa Clara, CA (Santa Clara County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #890185. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

Rocky Mountain Tiny Homes & ADUs

Rocky Mountain Tiny Homes & ADUs provides a full-service experience that makes your ADU project smooth and worry-free.

UP Craftsmen ADU Builder

UP Craftsmen ADU Builder specializes in making your accessory dwelling unit (ADU) dreams come true.

ADU DESIGNERS & BUILDERS

ADU DESIGNERS & BUILDERS is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Brea, CA (Orange County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #926786. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

XANADU CONSTRUCTION INC

XANADU CONSTRUCTION INC is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Los Gatos, CA (Santa Clara County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #949373. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

Rocky Mountain ADUs

ADU CONSTRUCTION

ADU CONSTRUCTION is a CSLB-licensed California contractor holding Class B (General Building) licenses based in San Clemente, CA (Orange County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #957631. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

SNAPADU LLC

SNAPADU LLC is a CSLB-licensed California contractor holding Class B (General Building) licenses based in San Diego, CA (San Diego County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #1075582. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

BUILTADU

BUILTADU is a CSLB-licensed California contractor holding Class B (General Building), C47 licenses based in Los Angeles, CA (Los Angeles County). The license carries a $25,000 contractor's bond. Workers' compensation insurance is in force. CSLB License #999468. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.

Los Angeles Elite Garage Conversion ADU

Los Angeles Elite Garage Conversion ADU specializes in transforming garages into functional living spaces, including detached ADUs, attached ADUs, and granny flats, across Los Angeles County. With over 20 years of experience, their licensed team manages every stage of the ADU process, from initial design and permit processing to the final build. They focus on careful planning, skilled construction, and compliance with city regulations, ensuring each project is completed with precision. They use advanced 3D design software and durable materials, such as steel studs, fiber cement siding, and energy-efficient insulation, to meet California's Title 24 energy standards and local zoning regulations.

Miami-Dade ADU

Miami-Dade ADU aims to provide South Florida homeowners with a streamlined and legal way to add space to their homes. They focus on single-family residential renovations and additions, with designs suitable for studios or one-bedroom units ranging from 400 to 800 square feet. Their ADU designs include full-sized bathrooms and space for standard furniture and appliances. Miami-Dade ADU can help homeowners increase property values and create comfortable living spaces for loved ones or rental opportunities. They also offer senior-friendly designs with features like wide door openings and curbless showers.

Estate ADU

Estate ADU is a Dallas-based design-build firm specializing in accessory dwelling units (ADUs). They focus on creating high-quality, code-compliant ADUs that seamlessly integrate into established Dallas neighborhoods like Lakewood, East Dallas, University Park, and Preston Hollow. Estate ADU tailors each structure to the client's lot, architectural style, and the needs of the future residents. They guide homeowners through the entire process, from initial feasibility and zoning considerations to architectural design, permitting, and construction. Estate ADU manages communication with reviewers and provides consistent updates throughout the project. Their team has a strong understanding of local zoning, HOAs, and architectural expectations, helping Dallas families build with confidence. Estate ADU's streamlined approach aims to provide a predictable and well-built ADU that supports the family's needs for years to come. They focus on established, high-value communities where ADUs provide solutions for multigenerational living, aging parents, and long-term family planning. Estate ADU manages communication with reviewers and guides you through each checkpoint so nothing feels uncertain. By the end of this phase, you have approved plans, accurate pricing, and a clear understanding of the next steps. With permits secured, construction begins. Our team oversees scheduling, trades, quality, and communication from start to finish. Homeowners receive consistent updates and a predictable experience as the ADU takes shape. They design and build fully custom Accessory Dwelling Units that match the character of your existing home and meet all Dallas zoning and permitting requirements. Ideal for aging parents, extended family, or long-term guest space.

Santa Clara ADU Builders

Santa Clara ADU Builders is a certified ADU builder company in San Jose.

prefabADU

prefabADU, based in the Bay Area of California, aims to make affordable housing actually affordable by providing ADU kits and resources for homeowners to build their own ADUs.

Seattle Modern Buildings ADU Builder

A Seattle-based design-build firm specializing in detached ADUs, duplexes, and modern homes.

SFBayADU

SFBayADU is a one-stop shop for Bay Area ADUs, specializing in homes from 600 to 1200 sq ft.

Seattle ADU Builders

A construction company located in Seattle, WA that specializes in ADU/DADU design, permitting, and construction.

Seattle DADU Builders

We area experts at building DADUs in the Seattle Area.

Portland ADU

Portland ADU has solutions for all of your general contracting needs, whether you're looking for an additional dwelling unit or a remodel.

SmartSpaces ADUs

SmartSpaces ADUs specializes in custom one-bedroom accessory dwelling units that offer comfort, independence, and long-term value.

Raleigh ADU Builders

Expert ADU builders in Raleigh, NC specializing in garage ADUs, detached ADUs, prefab ADUs & tiny homes.

Perpetual Homes ADU

Perpetual Homes ADU, founded in 2019 by Katherine Noe Anderson, is a family-run ADU builder in Northern California. With over 40 years of experience in real estate development, they manage every step of the ADU process, from design and permitting to construction and completion. Perpetual Homes aims to provide beautiful, affordable spaces for families, addressing California's housing needs. They offer customizable prefab ADU designs, ranging from compact studios to larger 3-bedroom layouts. Perpetual Homes distinguishes itself through its focus on customization, quality craftsmanship, and comprehensive support. They offer a range of pre-designed ADU models and single-family home floor plans, with options to modify existing designs. Their ADUs are built to HUD manufactured housing code, with sizes ranging from 435 square foot one-bedroom units to 1,173 square foot three-bedroom units. The Perpetual Lux series features modular ADUs ranging from 522 to 667 square feet. They utilize sustainable materials and building practices, integrating smart home features for convenience and energy efficiency. Perpetual Homes also offers assistance with permits and financing options. The company manufactures its units in a 140,000-square-foot facility in Mexicali, Mexico, and partners with general contractors for site preparations. Depending on the project and location, ADUs can be move-in ready within 5 to 9 months. Perpetual Homes is accredited with the Better Business Bureau with an A+ rating. They are an authorized Skyline Homes dealer. The company's mission is to assist families in maintaining their current configurations, whether it be through the assistance of "boomerang" youth or "move-down" parents.

ADU America

ADU America is a full-service tiny home and ADU builder serving the Aurora, Colorado area and broader Denver Metro region. The company handles every stage of the ADU development process — from initial property analysis and design through permitting, financing coordination, and construction — giving homeowners a true turnkey experience. Their Colorado operations build on an established model refined in the Chicagoland market, bringing that same systematic approach to the front range. The team offers a range of ADU types including detached tiny homes, attached units, pool houses, and studio configurations. Their studio model is purpose-built for single occupants, home offices, or private workspaces, while one-bedroom models suit couples or individuals seeking independent living on the same property. Each build is customized to fit the homeowners lot constraints and local zoning requirements. ADU America works with local financing partners in the Denver Metro area to help clients access cash-out refinancing, HELOCs, renovation loans, and personal loans, reducing the upfront barrier to getting started. Free property analyses and estimates are offered to prospective clients. The company positions itself as a one-stop shop that removes the complexity typically associated with ADU projects in Colorado.

ADU America

ADU America serves Colorado Springs as part of its Denver Metro and front range expansion, bringing its full-service tiny home and ADU construction model to El Paso County homeowners. The company manages the entire build process — property analysis, design, permitting, financing assistance, and construction — making it one of the few ADU builders in the Colorado Springs market offering true end-to-end service. Their Colorado Springs portfolio includes detached backyard ADUs, studio configurations ideal for rental income or home offices, and one-bedroom models suitable for multigenerational living or long-term tenants. The team coordinates with local financing partners to unlock options like HELOCs, cash-out refinancing, and renovation loans, helping homeowners fund projects without large out-of-pocket costs upfront. ADU America is well-versed in Colorado Springs zoning and permitting requirements, which have become more ADU-friendly in recent years following statewide legislation. The company offers free consultations and property analyses to help homeowners understand what is possible on their specific lot before committing to a project.

ABQ ADU

ABQ ADU is Albuquerque’s dedicated casita design/build specialist, operating out of 131 Madison St NE in the Nob Hill area. The firm focuses exclusively on accessory dwelling units, guest houses, and backyard cottages for Albuquerque and Bernalillo County homeowners. Their work combines architectural design with general contracting — handling the project from initial concept through permitted construction. The company leads with an accessible entry point, advertising casitas starting at $69,000, making them one of the more affordable full-service options in the market. They offer both custom-designed units and their own in-house model line — including the Hyder Hut, a 550 sqft 2-bedroom casita. Service coverage spans Albuquerque and Bernalillo County, aligning with the city’s updated 2023 zoning rules that now allow casitas in R-1 residential zones citywide. The company holds an ADU Specialist designation through aduspecialist.org and offers free preliminary consultations and site visits. The principal contact is Steven Miller (stevemillerarch@gmail.com), suggesting an architecture-background principal. Office hours are Monday through Friday, 9am–5pm Mountain Time. With Albuquerque actively targeting 1,000 new casitas through city incentive programs, ABQ ADU is well-positioned as a local, specialized resource in a market with growing demand and relatively few dedicated ADU firms.

ADU 4 You Pros

ADU 4 You Pros is a premier ADU contractor and consulting firm based in Fresno, California, specializing in accessory dwelling units throughout California's Central Valley. The company has been building ADUs since 2005 and offers a full-service concierge model covering feasibility studies, design, permitting, and construction. They build all primary ADU types: detached units, attached units, and garage conversions, along with second-story additions and basement transformations. Their service model includes pre-approved floor plan designs by city and county, plus fully customized designs for homeowners with specific needs. ADU 4 You Pros also serves real estate investors and developers in addition to individual homeowners. The company can be reached at (559) 430-4137 and ADU4YouPros@gmail.com. They offer a free ADU property profile — a customized report evaluating the property and detailing the potential value and benefits of building an ADU. Their service territory centers on Fresno and the surrounding Central Valley. Best suited for Central Valley homeowners and investors looking for an experienced local ADU specialist with 20-plus years of regional expertise. Their concierge approach handles the full process from initial feasibility through certificate of occupancy, making them a strong choice for first-time ADU builders who want guidance at every step.

Arizona ADU Building

Full-service ADU design, permitting, and construction company serving the Phoenix metro area. Specializes in accessory dwelling units that add value, space, and rental income to residential properties.

Fort Worth ADU

Fort Worth ADU specializes in designing and constructing Accessory Dwelling Units (ADUs) that transform backyards into functional living spaces. They offer custom-built backyard homes designed to blend seamlessly with existing homes. Ideal for generating rental income, accommodating family, or increasing long-term property value, Fort Worth ADU serves Fort Worth and surrounding communities. They also offer garage conversions, transforming existing garages into comfortable living spaces, and home additions.

Fresno ADU Pros

Fresno ADU Pros is a premier ADU builder in Fresno, CA, specializing in custom ADU design, garage conversions, prefab ADUs, and tiny homes. They offer a prefab ADU program that combines precision factory construction with customized finishing, delivering durable, attractive homes on a condensed schedule. They offer a range of floor plans and styles engineered for Fresno's climate and permitting requirements. Fresno ADU Pros also provides custom ADU design services, embracing creativity, efficiency, and local expertise to turn your vision into a stunning, functional accessory dwelling unit. They serve Fresno and surrounding areas, offering creative, efficient, and affordable design solutions.

Makara ADU

Makara ADU, based in Gaithersburg, Maryland, is a leading builder of Accessory Dwelling Units (ADUs) in Maryland, DC, and Virginia. They specialize in designing and constructing ADUs tailored to specific needs, offering solutions for guest suites, home offices, rental properties, or extra living space. Makara ADU utilizes modular construction techniques to deliver durable, energy-efficient, and beautifully designed ADUs that blend seamlessly with existing properties. They also offer a program where they pay the homeowner for allowing them to build an ADU on the homeowner's property and then rent it. Makara ADU offers a variety of ADU designs, including studio, one-bedroom, and two-bedroom units, with sizes ranging from 300 to 1100 sqft. They provide options to customize designs or create your own. The company emphasizes the potential for rental income, increased property value, and flexible living arrangements for family members. They aim to reduce the time and cost of ADU installation, allowing homeowners to maximize benefits. Makara ADU handles the permitting process and ensures compliance with local zoning and building codes. Makara ADU is committed to superior craftsmanship, transparent communication, and exceeding expectations. They serve various counties and cities in Maryland, DC, and Virginia.

Makara ADU

Makara ADU, based in Gaithersburg, Maryland, is a leading builder of Accessory Dwelling Units (ADUs) in the Washington, DC metro area, including Maryland, DC, and Virginia. They specialize in designing and constructing ADUs tailored to specific needs, whether it's a guest suite, home office, rental property, or extra living space. Makara ADU utilizes modular construction techniques to deliver durable, energy-efficient, and beautifully designed ADUs that blend seamlessly with existing properties. They offer various ADU plans, from studio apartments to 2-bedroom units, with sizes ranging from 300 to 1100 sqft. Makara ADU aims to provide affordable dwellings for a variety of needs, helping homeowners generate rental income, accommodate loved ones, and address the housing shortage in the region. They offer a streamlined process, with the potential to start earning rental income in as little as 120 days from permit. The company emphasizes community integration, ensuring their ADUs provide housing solutions without negatively impacting the surrounding neighborhood. They also offer resources and expertise to navigate the ADU construction process, including information on tax incentives and compliance with local building codes. Makara ADU has licenses in Maryland, Virginia, and Washington, DC, and serves various counties and cities in the region. They focus on providing a seamless and rewarding experience for homeowners looking to add additional living space to their properties.

Georgia ADU

Georgia ADU Builder is a design-build service specializing in Accessory Dwelling Units (ADUs) in the Greater Atlanta area. They offer cost-effective and luxurious ADU build-outs, including pre-designed units with minimal modification needed. They focus on providing solutions for generational living, particularly for retirees seeking independent living close to family. Georgia ADU Builder aims to revolutionize the housing market in Cobb, Fulton, Forsyth, Gwinnett, Cherokee, Bartow, and DeKalb Counties by adding value and increasing livability in homes. They also offer free feasibility analysis to determine if a property is suitable for an ADU.

Georgia ADU Builder

Georgia ADU Builder is a design-build firm with over 20 years of experience, specializing in cost-effective and luxurious accessory dwelling unit build-outs in the Greater Atlanta area. They offer start-to-finish design-build solutions, creating custom ADUs tailored to individual needs, whether it's for generational living, rental income, a home office, or a personal retreat. The company emphasizes creating unique and inspirational spaces, matching existing home styles or crafting something entirely new. Georgia ADU Builder aims to simplify the ADU building process, managing every step from design and permitting to construction. They focus on clear communication and transparency, ensuring a stress-free experience for homeowners. The company builds ADUs using traditional stick-built methods and navigates local zoning regulations and permits. They serve the Greater Atlanta area and surrounding suburbs, including Cobb, Fulton, Forsyth, Gwinnett, Cherokee, Bartow, and DeKalb Counties. The average ADU they build is around 620 square feet, heated and cooled, with high-quality finishes. The design and planning process typically takes 3-5+ weeks, and construction proceeds quickly once permits are approved. Georgia ADU Builder also offers pre-designed units with minimal modification needed for a faster build. They provide cost analyses and explore financing possibilities to make ADUs accessible.

Horizon ADU

Horizon ADU, based in Boston, focuses on helping homeowners create valuable housing from unused property space, increasing access to schools, amenities, and job centers. They aim to address construction industry challenges by offering transparency, quality, and trust in every project. Horizon ADU handles every step, from design and permitting to construction and warranties. The company was founded after the owner experienced the benefits of passive income and saw an opportunity for homeowners to generate rental income using their existing land. They are particularly interested in ADUs' ability to support multigenerational living and address the housing shortage in Boston. Horizon ADU specializes in both attached and detached ADUs. They offer services such as design, permitting, and contractor services. They also provide financing guidance and can connect clients with lenders offering ADU-specific financing and local grant programs. Horizon ADU aims to provide a straightforward, quality experience, treating each project as their own. They focus on transparency and clear pricing to build trust with families.

bunchADU

bunchADU, a subsidiary of Los Angeles-based Bunch Design, specializes in designing and building Accessory Dwelling Units (ADUs). Founded by Bo Sundius and Hisako Ichiki, the company offers both custom and pre-designed ADU prototypes, focusing on design-driven solutions for small, urban spaces. They emphasize inventive use of materials, light, and structure to create spaces that feel personal and unique. BunchADU aims to bring quality design and materials to backyard dwellings, offering pre-designed options to streamline the building process and provide accurate cost predictions. Their designs are adaptable and customizable to fit various site conditions and client needs.

Acton ADU

Acton ADU is a Bay Area-based design-build firm with over 35 years of construction experience, specializing exclusively in accessory dwelling units. Founded by Stanley Acton and headquartered in Campbell, CA, the company handles every phase in-house: feasibility assessment, custom design, permitting, construction, and warranty. All units are site-built to California residential standards — not prefab or modular. In San Jose specifically, Acton ADU holds the distinction of having the most pre-approved ADU floor plans on file with the city, significantly reducing permitting timelines for homeowners. Their Build Ready series offers standardized floor plans with predictable costs, while the Signature Series caters to homeowners who want elevated finishes and premium design. Their process is fully turn-key — they manage permit navigation across 40+ Bay Area jurisdictions, offer designer-curated interior packages, and provide financing guidance. Bay Area detached ADU costs typically run $225K–$475K depending on size, with a total project timeline of 9–14 months including permitting. They serve 40+ cities across the South Bay, Peninsula, and East Bay. Customers consistently praise the company for transparent communication, professional project management, and their expertise navigating San Jose's permitting process. Best suited for San Jose homeowners seeking a completely hands-off ADU build with pre-approved city plans.

Backyard ADUs

Emerald ADU Builders Seattle

Emerald ADU Builders Seattle specializes in the design, permitting, and construction of Accessory Dwelling Units (ADUs) and Detached Accessory Dwelling Units (DADUs) in the Seattle area. They offer comprehensive solutions, including ADU consultation, design & planning, permitting, and estimates. They focus on creating functional and stylish spaces that meet the unique needs of homeowners, whether for rental income, guest accommodations, or home offices. Emerald ADU Builders aims to provide affordable housing solutions by designing and building ADUs that increase property value and provide additional living space.

The ADU Builder

The ADU Builder is a Long Beach-based company that specializes in building high-quality, sustainable, and affordable Accessory Dwelling Units (ADUs).

Portland ADU Design & Build

Portland ADU Design & Build is a licensed and bonded team serving the greater Portland area and Willamette Valley, managing every detail from concept to key handover.

Rocky Mountain ADUs

Rocky Mountain ADUs transforms garages into extraordinary living areas, adding real value to your home with straightforward pricing, superior craftsmanship, and a personalized approach.

Goshen ADU

Goshen ADU, also known as Goshen Tiny Homes, is a Florida-based ADU builder specializing in turnkey ADU solutions. With 40 years of combined experience and 30 ADU projects underway, they handle all aspects of the process, including design, architecture, permits, utility hookups, and construction. They build custom detached ADUs and additions on-site to Florida Building Code standards, ensuring they qualify as real property. Goshen ADU offers various ADU types, including detached, attached, and two-story ADUs, as well as pool houses. They focus on providing personalized living experiences and enhancing property value. The company is accredited by the Better Business Bureau (BBB) since September 10, 2025. They serve Central and South Florida, including Tampa, Miami, West Palm Beach, Orlando, St. Petersburg, and Sarasota. Goshen ADU aims to provide a smooth and transparent process, managing zoning, permitting, and inspections for their clients. They also offer financing options to make ADUs more accessible. Goshen Tiny Homes builds ADUs the traditional way - on your property, from the ground up. Starting with a site check and design consultation, they lay the slab foundation, construct durable block walls, and finish with high-quality interiors tailored to your needs.

Inspired ADUs

Inspired ADUs, based in Oakland, CA, specializes in architect-designed Accessory Dwelling Units (ADUs) for homeowners across the Bay Area and Southern California. They offer a range of services including architecture, permitting, interior design, aging-in-place solutions, construction administration, and procurement, along with panelized and modular ADU options. Inspired ADUs provides flexible paths across design and construction methods to help clients create an ADU that reflects their lifestyle and long-term goals. They also offer services for SB9 lot splits, infill development, custom homes, renovations, and additions.

Affordable ADU

Affordable ADU is a Florida-based design-build firm specializing in accessory dwelling unit construction and garage conversions, focused on delivering high-quality builds that reflect Florida's distinctive architectural style at accessible price points. The company handles the full project lifecycle including architectural design, permitting, and construction, with free on-site consultations as the starting point for every engagement. All builds comply with the Florida Building Code, city-specific ADU regulations, and county zoning requirements. Their licensed and insured team manages the permitting process from submission through approval, and they offer financing resources to help homeowners access capital for their projects. The company serves the Tampa Bay area with expertise in the specific zoning rules and approved neighborhoods where ADU construction is now permitted in Tampa as of October 2024. Affordable ADU positions itself on the accessibility angle — making the ADU process straightforward and the price defensible for middle-market homeowners who want a professionally built unit without the premium pricing of larger regional builders. Customer reviews highlight personalized service and attention to detail throughout the construction process. The firm serves Tampa and surrounding Hillsborough County communities, with a focus on both standalone detached ADUs and garage conversion projects that maximize underutilized existing structures.