From custom design to permits and construction — we handle your entire ADU project start to finish. No headaches, no surprises, just results.
No commitment. Just expert guidance on what's possible for your property.
Trusted by 200+ San Diego families to design, permit, and build their dream ADU
"We were terrified about the permitting process. SD ADU walked us through every step, handled all the city paperwork, and got approved faster than we expected. Our detached ADU in North Park is now rented out and covering our mortgage!"
"I had an old detached garage sitting empty. SD ADU converted it into a beautiful 1-bedroom unit in Chula Vista — on time and on budget. The communication throughout was exceptional. I can't recommend them enough."
"We built an ADU in Encinitas for my in-laws. The design team really listened to our needs — the finished unit feels like a high-end coastal cottage. The permit process was seamless. Zero stress. Total professionals."
"From permit submission to final walkthrough in Oceanside — everything was handled professionally. We were kept in the loop with weekly updates. The quality of construction exceeded our expectations. Absolutely worth every penny."
"We tried another contractor first who couldn't figure out our La Mesa zoning situation. SD ADU figured it out in one meeting and had our permits approved in 6 weeks. The finished ADU is gorgeous and we're earning $2,800/month in rent."
We're not a referral network or a design-only firm. We handle every stage — design, engineering, permits, and construction — with one accountable team.
Tailored floor plans and architectural designs that maximize your lot's potential. We design for livability, aesthetics, and property value — not just code compliance.
Our architectural plans are engineered from day one to meet San Diego building codes, zoning ordinances, and state ADU law — minimizing back-and-forth with city officials.
We handle every interaction with the City of San Diego and surrounding municipalities — submitting applications, responding to corrections, and tracking approvals so you never have to call city hall.
One team. One contract. Total accountability. Our licensed construction crew handles framing, plumbing, electrical, insulation, roofing, and finishes — delivering a move-in ready ADU.
Turn your unused or underused garage into a fully permitted, high-quality living unit. Garage conversions are one of the fastest and most cost-effective ways to add a rentable ADU in San Diego.
Convert an interior portion of your home — like a bedroom with exterior access — into a legal JADU. A budget-friendly ADU option with fast permitting under California's streamlined JADU law.
From your first question to your final walkthrough — you'll always know exactly where your project stands.
We meet at your property, assess your lot, and map out what's possible — ADU type, size, budget, and timeline.
Our architects create permit-ready plans tailored to your vision — optimizing space, natural light, and long-term value.
We submit, track, and manage your permit applications — handling city corrections and follow-ups until approval is in hand.
Our expert crew builds your ADU with premium materials. We finish with a detailed walkthrough so you're 100% satisfied before we leave.
No commitment required. We'll tell you exactly what's possible for your property.
Every ADU we build is a custom-designed, fully permitted, high-quality living space. Browse our completed San Diego County projects.
