Before You Build in San Jose, CA: Permit & Rule Checklist (2026)
Everything you need to know before starting a home improvement project
Building a fence, installing a pool, or adding a shed? Each project has its own set of local permits and rules in San Jose. This guide consolidates fence, pool, ADU, shed, fire pit, and landscaping regulations into one checklist so you know what to expect before you start.
Quick Permit Checklist
At-a-glance overview of permit categories in San Jose. Click any card for details.
Fences & Walls
2 rules on file
Swimming Pools
1 rule on file
ADUs & Granny Flats
2 rules on file
Sheds & Outbuildings
3 rules on file
Fire Pits & Outdoor Structures
1 rule on file
Landscaping & Tree Removal
No specific rules found
Fences & Walls
Heavy RestrictionsHeight limits, materials, permits, and shared fence rules.
Pool Barriers
Heavy RestrictionsSan Jose enforces California Health & Safety Code §115920 pool safety requirements, mandating at least two of seven approved drowning-prevention measures. Fence barriers must be 60 inches tall minimum with self-closing self-latching gates. Compliance is verified at permit final and on resale inspections.
Height Limits
Some RestrictionsSan Jose allows fences up to 3 feet in front yards and 7 feet in side/rear yards without a permit under SJMC §20.30.600.
Swimming Pools
Heavy RestrictionsPool permits, safety fencing, and drainage requirements.
Fencing Requirements
Heavy RestrictionsSan Jose enforces the California Swimming Pool Safety Act (Health & Safety Code §§115920-115929) together with San Jose Municipal Code Title 17 Chapter 17.28 (Swimming Pool Enclosures). Pools and spas deeper than 18 inches require a permanent enclosure at least 60 inches high with self-closing, self-latching gates. New or remodeled pools must include at least two of seven approved drowning prevention features.
ADUs & Granny Flats
Few RestrictionsAccessory dwelling unit rules and garage conversion permits.
ADU Rules
Few RestrictionsSan Jose regulates ADUs and JADUs under San Jose Municipal Code §20.30.150, originally updated by the City Council in mid-2018 and amended to track state law. Detached ADUs are capped at 1,200 sq ft (on lots of 9,000 sq ft or larger; 1,000 sq ft cap on smaller lots), and JADUs at 500 sq ft within the primary single-family dwelling.
Garage Conversions
Few RestrictionsSan Jose allows conversion of an existing garage to an ADU or JADU under SJMC §20.30.150, consistent with California Government Code §65852.2. No replacement parking is required when an existing garage is converted to an ADU, and the existing setbacks are preserved for the conversion footprint.
Sheds & Outbuildings
Some RestrictionsShed permits, setback limits, and outbuilding size rules.
Tiny Homes
Some RestrictionsSan Jose permits tiny homes on foundations as Accessory Dwelling Units under California Government Code §65852.2 and local ADU ordinance. Movable tiny homes on wheels (THOWs) can qualify as ADUs if they meet ANSI 119.5 or HUD standards and are installed with utilities. Homeless tiny-home villages operate under city-sanctioned programs.
Carport Rules
Few RestrictionsSan Jose regulates carports as part of off-street parking under San Jose Municipal Code Chapter 20.90 (Parking and Loading), with the citywide parking minimum repealed by the Council on December 6, 2022 and effective April 10, 2023. Carports built as accessory structures are still permitted but no longer mandated, and the standard 90-degree parking stall under Table 20-220 is 9 feet wide by 18 feet long.
Shed Rules
Some RestrictionsSheds in San Jose count toward rear yard coverage. Total rear yard structure coverage may not exceed 40% or 800 sq ft (whichever is greater). Structures over 650 sq ft need a Special Use Permit.
Fire Pits & Outdoor Structures
Some RestrictionsFire pit placement, outdoor burning restrictions, and permits.
Fire Pit Rules
Some RestrictionsFire pits and portable outdoor fireplaces are allowed in San Jose with clearance requirements under the 2022 Fire Code. Recreational fires need 25-foot setback from structures.
Landscaping & Tree Removal
Tree removal permits, heritage tree protections, and water rules.
No specific landscaping & tree removal rules found for San Jose. Check with your local building department for current requirements.
General Permit Tips
When do you typically need a permit?
Most cities require permits for structural work, including fences over a certain height, pools, ADUs, and sheds above a size threshold. Even projects that seem minor can trigger permit requirements, so it is always best to check first.
How to apply for a building permit
Visit your local building department or their website. Most jurisdictions accept online applications. You will typically need a site plan, project description, and may need contractor information. Processing times vary from same-day for simple projects to several weeks for larger builds.
Common permit violations to avoid
Building without a permit, exceeding approved dimensions, and ignoring setback requirements are the most common violations. Penalties can include fines, required removal of the structure, and complications when selling your home.
Permit Guides for Nearby Cities
Looking for rules beyond permits? View all ordinances we track for San Jose.