Santa Clara County • Permissiveness Score: 96/100
San Jose, CA ADU Zoning Rules & Regulations
San Jose has an ADU Universal Checklist and same-day ADU express permitting for pre-approved master plans. Perfect for tech homeowners seeking high rental yields.
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Key Zoning Parameters for San Jose
Verified 2026 Max Detached Size 1,200 sq ft
Max Attached Size 1000
Rear & Side Setbacks 4 ft rear / 4 ft side
Front Setback Underlying zone front setback applies
Max Height Limit 18 feet (2 stories)
Owner Occupancy Not Required (Waived) Owner occupancy not required.
Parking Requirements Exempt Exempt if within 0.5 miles of public transit.
Junior ADU (JADU) Allowed up to 500 sq ft within primary residence
Short Term Rentals (Airbnb) Prohibited Must be rented for minimum 30 days.
Estimated Permit Fees $3,000 - $7,000
Avg Review Timeline 1 - 4 weeks for pre-approved plans
Fire Sprinklers Not required unless primary structure has sprinklers.
Governing Ordinances & State Laws
- ✓ San Jose Title 20 Zoning Ordinance
- ✓ California Government Code 65852.2
San Jose ADU Frequently Asked Questions
Does San Jose offer same-day ADU review?
Yes! The San Jose ADU Tuesday program and Pre-Approved Master Plan program can issue permits in a single day for qualifying configurations.
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