All CitiesSanta Clara County
ADU Construction in San Jose
San Jose has one of the most ADU-friendly programs in the Bay Area with pre-approved plan sets that accelerate permitting.
10–12 months
Average Permit Timeline
$285,000
Starting Cost
$300,000–$420,000
Typical Project Cost
72
Projects Completed
San Jose ADU Regulations & Requirements
Building an ADU in San Jose requires navigating Santa Clara County's zoning and the city's specific standards. Our team manages the full process so your project stays compliant and on schedule.
- Pre-approved ADU plans available for faster review
- Up to 1,000 sq. ft. for detached units
- Reduced parking requirements near transit
- Streamlined online permit submittal
Why Build With ADU.zone in San Jose
With 72 completed projects in the area, we bring local permit knowledge, transparent pricing, and premium construction to every San Jose ADU. From feasibility to final inspection, a dedicated project manager guides you at every step.