Trusted Custom ADU Builders in San Diego

We bring your ADU vision to life — from zoning and permits to full construction, handled by a local, award-winning team.

Dreaming of a Custom ADU That Fits Your San Diego Property Perfectly?

Urbatect specializes in fully custom ADUs designed specifically for San Diego homes and local regulations. Every ADU is created from the ground up to match your property, lifestyle, and long-term goals while maximizing your lot’s potential and overall property value.

From your first concept to permits and full construction, our in-house team manages the entire process. We handle the complexities of San Diego’s zoning, planning, and building requirements, so you don’t have to – making your ADU experience clear, streamlined, and stress-free.

With Urbatect, you get a custom ADU and a coordinated, end-to-end team focused on delivering quality, clarity, and results from start to finish.

Luxury backyard pool with water and fire features

Our Completed Custom home Projects

Castro Valley ADU & Office/Gym Space

Castro Valley, CA

Albany ADU

Albany, CA

Custom Home​

Santa Rosa​

Arcilla ADU

San Diego

Sawgrass Residence

Santa Rosa​

Camden ADU

Oakland

Our Step by Step Approach Creating Your Dream ADU in San Diego

Consultation & Site Visit

Every San Diego ADU project begins with a consultation and site visit to understand your vision, assess your property, and review what’s possible under local ADU regulations. Whether you’re planning a detached ADU, garage conversion, or attached unit, we guide you through feasibility, planning, and early budgeting to help turn your ADU goals into a clear path forward.

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Consultation & Site Visit Illustration

ADU Design & Permitting

Our designers work closely with you and our construction team to create a custom ADU design that balances aesthetics, functionality, and cost. By aligning design and construction early, we help reduce surprises and stay on budget. From 3D renderings to permit-ready plans, every detail is developed for efficiency, compliance, and long-term value.

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ADU Design & Permitting Illustration

ADU Permits

Getting an ADU permit in San Diego doesn’t have to be stressful. We prepare accurate submittals and handle coordination with city or county officials to help avoid unnecessary delays. Our permit technician team manages the process from paperwork to plan check corrections helping move your project through approvals as efficiently as possible.

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ADU Construction

With over 15 years of experience, our construction team brings your ADU to life with quality craftsmanship and attention to detail. From foundation to finishes, we manage every phase of construction to ensure timely completion. You’ll have a dedicated project manager keeping you informed so there are no surprises, just a well-built ADU tailored to your property.

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ADU Construction Illustration

Most trusted adu builders in San Diego

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1,000+ Happy Customers.
Real Stories, Real Results.

The Urbatect Advantage

What Sets Us Apart

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FAQs

ADU costs in San Diego vary based on size, type (detached, attached, garage conversion), finish level, and site conditions. Use our ADU Cost Calculator at https://www.urbatect.com/adu-cost-calculator to get a personalized estimate for your project.

A typical ADU project in San Diego takes approximately 8–14 months from design through construction completion. Urbatect’s integrated design-build approach can deliver projects 25–30% faster than traditional methods.
San Diego allows detached ADUs, attached ADUs, garage conversions, and JADUs on most single-family residential lots. Specific size limits, setback requirements, and regulations vary by zone.
Most single-family properties in San Diego are eligible for at least one ADU under California state law. During our free consultation and site visit, we assess your lot, zoning, and local regulations to determine exactly what you can build.
ADUs increase property value, generate rental income, and provide flexible living space. In San Diego’s strong rental market, a well-designed ADU can offer significant return on investment.

ADU financing options include home equity loans, HELOCs, construction loans, cash-out refinancing, and ADU-specific loan programs. Urbatect coordinates financing timelines with the design-build process, aligning lender draws to project milestones. Learn more at https://www.urbatect.com/adu-financing.