Yes, you can build in San Jose. As the largest city in Silicon Valley, San Jose allows ADUs by right under California state law and has adopted aggressive housing production targets. The city’s Urban Village strategy focuses density near transit corridors.
Last updated: April 2026 · Data from 20+ government sources
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ADU Status
Yes — by right under state law
Common Zones
R-1, R-2, R-M, CG, CP, LI
Permit Timeline
4–10 weeks
Key Constraint
Urban Village overlay, CEQA, airport noise
142 factors. 20+ government sources. Buildability Score in 20 seconds.
Score My San Jose Property FreeZoning rules in San Jose vary by address. Enter your specific property for accurate results. Always verify with the San Jose planning department before making decisions.