Setback Rules: Mountain View vs San Jose
How do setback rules rules compare between Mountain View, CA and San Jose, CA?
Mountain View has fewer restrictions than San Jose.
Mountain View, CA
Santa Clara County
Mountain View R1 zones require 20-foot front setbacks, 5-foot side yards, and 20-foot rear setbacks for primary dwellings. R2 and R3 zones vary by density, with specific plan districts having custom standards.
View full Mountain View rules →San Jose, CA
Santa Clara County
San Jose establishes minimum setback requirements by zoning district under SJMC Title 20 (Zoning). For single-family residential (R-1-8) zones, the standard setbacks are: 25 feet front, 6 feet interior side, 10 feet street side, and 25 feet rear. Reduced setbacks may be available through the Residential Exceptions process for additions that maintain neighborhood compatibility. Setback requirements vary significantly across San Jose's numerous residential, commercial, and industrial zoning districts.
View full San Jose rules →Key Facts Comparison
| Fact | Mountain View | San Jose |
|---|---|---|
| R1 front setback | 20 feet | - |
| R1 side setback | 5 feet, 15 ft combined | - |
| R1 rear setback | 20 feet | - |
| ADU setback | 4 ft side and rear | - |
| Eave encroachment | 30 inches max | - |
| Code Section | - | SJMC Title 20 - Zoning |
| R-1-8 Front | - | 25 feet minimum |
| R-1-8 Side | - | 6 feet interior; 10 feet street side |
| R-1-8 Rear | - | 25 feet minimum |
| Exceptions | - | Residential Exceptions process for reduced setbacks |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Can I build an addition up to my property line?
No. Additions must respect the 5-foot side setback in R1 zones unless you obtain a variance, which requires findings of hardship unique to your property.
Do ADUs have the same setbacks as the main house?
No. State law AB 68 preempts local setbacks for ADUs, requiring only 4 feet from side and rear property lines regardless of the zone.
San Jose FAQ
What are the setback requirements for my property in San Jose?
Setbacks depend on your zoning district. For standard R-1-8 residential, setbacks are 25 ft front, 6 ft side, and 25 ft rear. Check your property's zoning at sanjoseca.gov/planning for specific requirements.
Can I build closer to the property line than the standard setback?
Yes, through the Residential Exceptions process if the proposed setback is consistent with the existing building pattern on your block. Apply through the Planning Division.
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