Building an ADU in San Jose is one of the most effective ways to add livable space, increase property value, and create long-term rental opportunities. However, success depends on working with an architect who understands how to avoid permitting delays, control costs, and work within the city’s specific regulations.
At Dwelling Lab, this is our core focus. As licensed California architects, we specialize in ADU design and permitting and have helped homeowners and property owners move confidently through every phase of the process—from early feasibility and design through approvals and construction coordination. Our approach keeps projects moving forward with clarity, efficiency, and a long-term mindset so your ADU works as a functional asset, not a headache.
San Jose’s zoning and permitting requirements demand careful coordination and clear documentation. We’ve developed a streamlined process that helps keep your ADU project moving forward without unnecessary delays or surprises:
Every property presents different opportunities. We help you select the ADU type that best fits your goals, budget, and existing site conditions:
San Jose properties face a mix of urban density, interface zones, and regional fire considerations. That’s why durability and safety are built into every ADU we design:
Your property has more potential than it may appear. Homeowners and investors across the area choose Dwelling Lab because we bring clarity and consistency to a process that’s often complex:
Most ADU projects are permitted within 2–4 months, depending on the scope of work, design complexity, and city review timelines.
ADUs must be at least 150 square feet, with minimum ceiling height requirements, natural light, and proper egress per local code.
Garage and interior conversions often fall in the $100,000–$150,000 range, while detached ADUs commonly exceed $300,000. Final costs vary based on design decisions, site conditions, and construction pricing.
Yes. We evaluate existing conditions, prepare corrective plans where needed, and manage the legalization process directly with the city.
Your San Jose property holds real opportunity—whether you’re planning space for extended family, creating a rental unit, or building long-term value. Dwelling Lab brings the experience and local knowledge needed to turn that potential into a well-executed ADU.
