Top ADU Contractors in San Diego, California
Accessory Dwelling Units (ADUs) have become a popular solution for homeowners in San Diego seeking to maximize their property’s potential. Whether for extra rental income, housing family members, or creating a guest house, ADUs provide flexibility and functionality. But to ensure a successful ADU project, choosing the right contractor is key.
In this blog post, we’ll introduce you the ADU contractors in San Diego, and explore other highly recommended companies in the area that can turn your ADU vision into reality.

What is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary, independent living space located on the same property as the primary home. ADUs can be detached or attached to the main residence and are often used as a rental property, guest house, or additional living space for family members. ADUs are commonly referred to as "granny flats," "in-law suites," or "backyard cottages."
Why You Should Choose a Reputable ADU Contractor
Choosing an experienced and reputable ADU contractor is crucial for the success of your project. A good contractor will:
Navigate Local Zoning and Permitting: San Diego has specific rules and regulations governing ADU construction, and an expert contractor will handle all ADU permits and compliance requirements.
Offer Design Flexibility: Whether you're looking for a modern design, sustainable features, or efficient use of space, an experienced contractor can help bring your vision to life.
Ensure Quality Construction: A reliable contractor ensures that your ADU is built to last, using high-quality materials and craftsmanship.
Provide Transparent Pricing: Trustworthy contractors offer clear, upfront pricing, ensuring there are no hidden costs or surprises.
Now, let’s dive into the best ADU contractors in San Diego.
1. Fortune ADU
Fortune ADU is a leading ADU contractor in San Diego, known for its expertise, exceptional service, and customer-focused approach. With years of experience in the industry, Fortune ADU offers a comprehensive suite of services, from design to permit acquisition to final construction.
Why Choose Fortune ADU?
Full-Service ADU Solutions: Fortune ADU handles every aspect of the project, including design, permits, construction, and final inspections.
Expert Knowledge of San Diego Regulations: Their team is highly familiar with the local building codes and regulations, ensuring that your ADU complies with all requirements.
Customizable Designs: Fortune ADU works closely with clients to create personalized, innovative designs that reflect your unique vision.
Client Satisfaction: The company prides itself on clear communication, quality craftsmanship, and on-time project completion.
Sustainability: Fortune ADU emphasizes eco-friendly building practices, offering energy-efficient designs and materials.
2. Nexus Construction
Nexus Construction is another top ADU contractor in San Diego, specializing in custom-built units that integrate seamlessly into your existing property. Nexus has an impressive track record of delivering high-quality projects on time and within budget.
Why Choose Nexus Construction?
Experienced Team: Nexus has been building ADUs for over a decade, offering a high level of expertise in both design and construction.
End-to-End Services: From initial consultation to permit acquisition and final inspection, Nexus takes care of everything.
Innovative Designs: Nexus offers creative, functional designs that maximize space without compromising aesthetics.
Focus on Client Communication: The team keeps you informed throughout the project, ensuring no surprises.
3. AB Design + Build
AB Design + Build is known for its innovative and sustainable ADU designs. They combine modern architecture with functionality to create ADUs that are both stylish and practical. The team offers a personalized approach, ensuring that your ADU is tailored to your needs.
Why Choose AB Design + Build?
Sustainable Designs: AB Design + Build incorporates energy-efficient solutions into their ADUs, helping homeowners save on utility bills.
Comprehensive Services: They handle every phase of the project, including design, permits, and construction.
Creative Use of Space: AB Design + Build excels in maximizing space without sacrificing comfort or style.
4. Urban ADU
Urban ADU specializes in building modern, eco-friendly ADUs in San Diego. They focus on creating smart, sustainable spaces that fit seamlessly into urban environments. Urban ADU is ideal for homeowners who want a contemporary, energy-efficient unit.
Why Choose Urban ADU?
Energy Efficiency: Urban ADU emphasizes green building practices, using sustainable materials and energy-efficient systems.
Modern Designs: They offer cutting-edge designs that cater to homeowners seeking modern living spaces.
Collaborative Approach: Urban ADU works closely with clients to ensure that the design meets their needs and preferences.
5. Harris Builders
Harris Builders is a trusted name in ADU construction, offering reliable, high-quality services at competitive prices. Their experience in custom home building translates well into their ADU projects, ensuring both quality and affordability.
Why Choose Harris Builders?
Experienced Team: Harris Builders has a skilled team of designers and builders with years of experience in constructing ADUs.
Affordable Solutions: They provide cost-effective options without compromising on quality.
Clear Communication: Harris Builders keeps clients informed at every stage of the project, ensuring transparency.
