Best Builders in Long Beach, CA

Huntington Beach Pro ADU Builder is a trusted partner for ADU and garage conversions, specializing in accessory dwelling unit construction, detached ADU building, garage to living space transformations, and turnkey design-build services. With 20 years of experience, they have completed over 500 residential projects. Their comprehensive approach handles every project phase, including custom architectural design, zoning and code compliance assistance, permit application processing, space optimization, and complete construction management for homeowners throughout Huntington Beach. Their design team collaborates with clients to create ADUs or garage conversions that fit their style, budget, and needs, offering floor plan options, reviewing finishes, and explaining each step with visuals and material samples. They focus on quality construction, careful planning, and local expertise, navigating city regulations and incorporating energy-saving features. They also assist with navigating Huntington Beach ADU codes, such as lot size, parking, and setback requirements. They transform unused garages into comfortable, modern spaces, managing both attached and detached conversions while ensuring code compliance and durability. The company also focuses on ethically sourced and environmentally responsible builds. Huntington Beach Pro ADU Builder works with local suppliers and partners to source quality materials quickly and keep costs fair. They offer a range of ADU services, including new ADU builds, garage conversions, and navigating city regulations. They handle permit applications, site plans, and zoning paperwork, working closely with city officials to reduce delays and avoid costly mistakes. They also stay informed about changes to Huntington Beach ADU codes.

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

ADU West Coast is a vertically integrated design, engineering, and construction firm based in Seal Beach, California, specializing exclusively in accessory dwelling units across Southern California. With 15+ years of experience in home development projects across every major city in LA County, the company handles design, structural engineering, permitting, and construction under one roof — a true one-stop shop that eliminates the coordination problems common when working with separate architects and contractors. The firm converts underutilized garages, backyards, and other spaces into income-producing dwelling units. Their ADU types include garage conversions, over-the-garage additions, stand-alone detached units, and basement or attic conversions. They partner with Southern California homeowners and investors who want to maximize property value without the typical project management headaches. ADU West Coast handles every aspect of the permitting process, drawing on deep familiarity with LA County and Orange County zoning codes, setback requirements, and city-specific ADU ordinances. They also offer flexible financing options and understand real estate ROI — a differentiator for investor clients evaluating rental income potential. Holding California Contractor License #1064076, the company operates from their Seal Beach office and serves Long Beach, Whittier, and surrounding communities throughout Greater Los Angeles and Orange County.

Infinity ADU, operating as Infinity ADU in Long Beach, CA, specializes in designing and constructing functional and stylish accessory dwelling units (ADUs) tailored to meet clients' specific needs. They focus on creating independent living spaces by building detached ADUs that maximize both space and privacy. The company offers a full range of services, managing every aspect of the project from initial design to final construction, ensuring compliance with local zoning and building codes. Infinity ADU aims to provide a seamless and stress-free experience for homeowners looking to enhance their property with a beautifully designed and expertly built ADU. They also offer in-house financing programs to provide financial flexibility for ADU investments.

ADU Certified is a Long Beach-based ADU contractor specializing in garage conversions and new construction accessory dwelling units throughout the greater Los Angeles area. The company works with a qualified ADU architect to ensure every project is professionally designed and code-compliant, taking on projects of varying sizes with a reputation for being responsive and professional throughout the build process. The firm handles a range of ADU configurations including above-garage ADUs, detached backyard cottages, in-law units or granny flats, and garage-to-ADU conversions. Beyond ADU construction, ADU Certified also offers kitchen and bathroom remodeling services, making them a versatile general contractor for homeowners looking to improve multiple aspects of their property at once. The team operates Monday through Friday 8am to 6pm and Saturdays 7am to 5pm. Customer reviews consistently highlight the team's professionalism, accommodating nature, and quality workmanship. One reviewer described the experience of converting a garage into an ADU as having a team that was friendly, responsive to concerns, and delivered a quality result. Serving Long Beach, Huntington Beach, and the broader South Bay and LA County market, ADU Certified is accessible at 877-969-2272 or hello@aducertified.com for homeowners ready to start a project.

LADU specializes in assisting homeowners in maximizing their property's potential through expert ADU builder services in Los Angeles. They offer comprehensive support in ADU permitting, ensuring projects meet local regulations. LADU focuses on innovative ADU design, creating functional and stylish living spaces that add value and versatility to homes. They simplify the ADU construction process with expert guidance and complete project management from start to finish.

ADU Homes is a full-service design-build firm based in Long Beach, California, specializing exclusively in accessory dwelling units for Los Angeles and Orange County homeowners. They handle the complete development process in-house — from architectural design and plan check submittal through permitting and construction — under a fixed, all-inclusive pricing model with a guaranteed completion date. The company offers detached ADUs, attached ADUs, Junior ADUs (JADUs up to 500 sq ft), garage conversions, and carriage house-style units in one- to three-bedroom configurations. Their fixed pricing model eliminates cost overrun surprises, and they provide free virtual property evaluations with cost estimates and timeline projections before any commitment. Projects in Long Beach typically run $190,000–$375,000 depending on size and design, with construction costs around $350–$450 per square foot. Average completion time is 6–8 months from design through final inspection, with Long Beach permitting running approximately 60 days under the city's streamlined ADU review process. ADU Homes is positioned for homeowners who want a single accountable team with no separate architect, contractor, or permit expediter to coordinate. Their Long Beach location gives them direct familiarity with city zoning and setback requirements across the municipality.