San Diego ADU Construction
Turn Your Property Into Income or Extra Living Space with a Custom ADU
Looking to build a guest house, rental unit, or private studio on your property? Our San Diego ADU experts at Prime Builds specialize in designing and constructing beautifully crafted accessory dwelling units that add value and flexibility to your home. Whether you’re creating a space for extended family or building a passive income source, we manage the entire process—from city permitting and design to full construction. We stay up to date with California’s ADU regulations and tailor every structure to match your main home’s style, maximizing both functionality and curb appeal.
ADU Design in San Diego
Custom ADU Design in San Diego
If you’re not looking to build from the ground up, a garage conversion may be the smartest and fastest way to create an ADU on your property. Prime Builds specializes in transforming underused garages into beautiful, fully livable ADU units with kitchens, bathrooms, and custom features. We ensure your converted space meets all city codes for insulation, fire safety, plumbing, and electrical systems. Attached ADUs and above-garage builds are also popular options in San Diego where space is limited. We’ll help you explore the best solution based on your property layout and budget.
Permitting & ADU Regulations in San Diego
ADU permitting in San Diego can feel overwhelming, but with Prime Builds, you never have to go it alone. Our team understands local zoning rules, setback limits, height restrictions, and utility hookup requirements—so we can streamline your permitting process and avoid delays. We handle all paperwork, submissions, and inspections on your behalf, keeping your project on schedule from day one. With California continuing to support ADU development, now is the ideal time to take advantage of relaxed regulations and grow your property’s potential.
Detached ADU
Can I build a separate tiny home in my backyard? Yes, and it’s called a detached ADU. This is a completely stand-alone structure on your property—usually in the backyard—with its own private entrance, full kitchen, bathroom, and living space. Detached ADUs offer the most flexibility and privacy, making them a great choice for long-term rentals, Airbnb units, or private guest houses. You can choose from modern prefab options or go fully custom, depending on your space and budget. We handle all the permitting, design, and construction to ensure your detached ADU fits perfectly with your home’s style and zoning requirements. It’s like having a second home without leaving your lot.
Attached ADU
Is it possible to add an ADU directly onto my home? Absolutely. An attached ADU is built as a structural addition to your existing home, sharing at least one wall with the main house. It has its own kitchen, bathroom, and separate entrance, giving occupants both independence and proximity. This type of ADU is ideal if you don’t have space for a detached structure but still want a self-contained unit. Whether you’re housing a family member or planning to rent it out, an attached ADU can boost your home’s value and functionality. Our team designs these units to match your home’s exterior and ensures seamless integration inside and out.
Garage Conversion ADU
What if I want to turn my garage into a rental unit? Garage conversions are one of the most popular ADU options in San Diego, and for good reason. If your garage isn’t being used for parking, it can be transformed into a fully livable unit with a kitchen, bathroom, bedroom, and storage. This is often one of the most affordable ways to build an ADU since the structure already exists. Whether it’s a detached or attached garage, we upgrade the insulation, plumbing, electrical, and finishes to meet all code requirements. It’s perfect for guests, tenants, or even your own private studio. You’ll be amazed at how much usable space you already have.
Above-Garage ADU
Can I build an apartment over my garage? Yes, and an above-garage ADU is a smart way to maximize vertical space. This type of unit sits right on top of your existing garage and includes a full bathroom, kitchen, and living area with its own private entrance. It’s perfect for renting out, offering a view, or creating a home office with separation from your main home. Since this project involves structural considerations, it requires experienced engineering and careful planning—which Prime Builds handles from start to finish. We make sure your garage can support the new space safely and stylishly, adding long-term value and functionality to your property.
Junior ADU (JADU)
What is a Junior ADU and how is it different? A Junior ADU, or JADU, is a smaller unit (up to 500 square feet) created within the existing footprint of your main home—often from a spare bedroom, garage, or unused space. It must include a separate entrance and at least a kitchenette, but shares a bathroom with the main house. JADUs are perfect for aging parents, a college student, or even as a short-term rental. Since they’re more compact and don’t require new construction, they’re faster and more affordable to build. Prime Builds helps you unlock hidden value in your home with a clever layout that feels both private and integrated.
Why Build Your ADU with Prime Builds?
At Prime Builds, we’re more than just builders—we’re problem-solvers who understand how to unlock your property’s full value. With extensive experience in ADU construction throughout San Diego, we offer turn-key project management, transparent pricing, and high-quality craftsmanship that lasts. Every ADU we build is energy-efficient, space-smart, and crafted with materials that reflect your style and investment goals. We listen carefully to your ideas and guide you every step of the way, from concept to completion.
Need Remodeling Services In San Diego?
Project Gallery
Take a look at real projects we’ve completed in homes and apartments across San Diego. From kitchen renovations and bathroom upgrades to flooring, exterior work, and full-home remodeling these photos show the quality and care we bring to every space.
Ready to Build Your San Diego ADU?
Let’s talk about what’s possible on your lot. Whether you want a simple backyard studio or a full-featured guest house, Prime Builds is the ADU builder San Diego homeowners trust. Call us at (858) 568-1335 or fill out the contact form below to schedule your free consultation.