ADU Designers & Builders – Full-Service ADU Contractor in Southern California
ADU Designers & Builders is a comprehensive ADU builder and design firm based in Fullerton, California, serving homeowners across Southern California. With a team that brings together decades of combined experience in construction, structural engineering, and design, they offer an end-to-end solution for anyone looking to add an accessory dwelling unit to their property.
Their construction team carries over 10 years of experience managing multi-family housing projects throughout Northern and Southern California. With a thorough understanding of local building codes and requirements, they have successfully overseen projects ranging in value from $50 million to over $200 million. This depth of expertise is brought to every ADU project they undertake, regardless of scale.
Types of ADUs They Build
As a versatile detached ADU builder and garage conversion contractor, ADU Designers & Builders offers a range of unit types to suit different property layouts and homeowner needs:
- Detached ADU: Fully separated from the main house, these units include backyard bungalows and converted outbuildings — ideal for those seeking a private backyard cottage or granny flat.
- Attached ADU: Connected to the main residence, these units can feature either a shared or separate entrance, making them a popular choice as an in-law suite builder solution.
- Garage Conversion: Transforming an existing attached or detached garage into a fully functional living space — a cost-effective and popular garage conversion contractor service.
- Upper Floor ADU: Converting an existing upper floor into a living unit, accessible via interior or exterior stairs. This qualifies as a type of JADU (Junior Accessory Dwelling Unit) in many cases.
Their design team brings over 30 years of building plan design and structural engineering experience, working with multi-million dollar companies across Southern California. They are PE licensed and handle the full permitting process with cities and counties throughout the region, offering a true one-stop-shop experience.
Additional Services That Set Them Apart
Beyond their core role as an accessory dwelling unit builder, ADU Designers & Builders provides several complementary services that add long-term value to every project:
- Financial Planning: Understanding that financing is a critical part of the process, they offer tailored financial support and advice. Clients may qualify for financing of up to 50% of the total project cost at 0% interest over 60 months, making ADU construction more accessible.
- Solar Panel Integration: In partnership with top solar designers and installers, they incorporate sustainable energy solutions into their builds. From site assessments to full installation, they guide homeowners toward energy efficiency and long-term cost savings.
- Title 24 Compliance: Their team provides comprehensive Title 24 services, ensuring all construction projects meet California's energy efficiency standards. From initial assessments to compliant design development, they streamline the compliance process for every client.
ADU Designers & Builders approaches every project with a vision that goes beyond construction. They aim to create transformative living spaces that blend seamlessly into existing neighborhoods, enhance property value, and adapt to the evolving needs of modern homeowners. Their commitment to quality, integrity, and client satisfaction positions them as a leading ADU contractor in the Southern California market.
