Permit Required? Sometimes Required
Typical Fee Range $0–$300 Exempt if under 120 sq. ft. and no utilities; over 120 sq. ft. requires a building permit.
Fee Method Valuation-based
Apply Online Apply at San José Department of Planning, Building and Code Enforcement →

What's Required in San Jose

  • No permit required for one-story detached storage sheds 120 square feet or less
  • Permit ALWAYS required if the shed includes electrical, plumbing, or mechanical systems
  • Detached structures must follow specific rear and side yard setback requirements
  • Sheds over 12 feet in height are not exempt and require a building permit
  • No more than 2 yard buildings allowed per lot in most residential zones
  • Site plan required for permitted sheds to show distances from property lines

What Size Shed Needs a Permit in San Jose

Whether you need a building permit for a shed in San Jose usually comes down to size. In San Jose, the cutoff is clear: detached sheds of 120 square feet or less don’t need a building permit, while anything larger does. A popular 10x12 shed (120 sq ft) lands exactly on the limit — at that size it’s still exempt, but going any bigger triggers a permit. Larger sheds, and any shed with electrical, plumbing, or a permanent foundation, almost always need a permit regardless of footprint.

Building a Shed Without a Permit in San Jose

Even when a shed is small enough to skip a building permit in San Jose, “no permit” doesn’t mean “no rules.” A permit-exempt shed generally must stay at or under the 120-square-foot limit, sit on a non-permanent base (sheds on skids or a gravel pad are treated more leniently than those on a poured foundation), and have no electrical or plumbing run to it. Crucially, zoning setbacks still apply — your shed usually has to sit a minimum distance from property lines and other structures, and that holds even for a permit-free shed. Confirm both the size exemption and the setback distance with the San José Department of Planning, Building and Code Enforcement before you build.

How to Get a Shed Permit in San Jose

1

Step 1: Size Verification

Confirm if your shed is under the 120 sq. ft. threshold to avoid a permit.

2

Step 2: Check Setbacks

Ensure the shed location meets rear and side yard coverage rules (Municipal Code 20.30).

3

Step 3: Portal Submission

If over 120 sq. ft., apply for an 'Accessory Structure' permit via SJPermits.

4

Step 4: Fee Payment

Pay valuation-based building fees (estimated $200–$300 for basic units).

5

Step 5: Inspection

Schedule a final structural inspection for all permitted sheds.

Frequently Asked Questions

Only if it is larger than 120 sq. ft. or has any utilities (power/water).
If required, fees start at approx. $200 plus trade permits for utilities.
Generally in the rear or side yard, keeping out of easements and meeting setbacks.
In San Jose, sheds of 120 square feet or less can be built without a building permit; anything larger needs one. The exemption usually also requires no permanent foundation and no electrical or plumbing, and zoning setbacks from property lines still apply even without a permit.
Often not, if it’s also within San Jose’s 120 sq ft limit and has no utilities — many jurisdictions treat a shed on skids or a gravel pad as movable rather than a permanent building. A poured foundation or any electrical/plumbing typically triggers a permit. Confirm with the San José Department of Planning, Building and Code Enforcement; zoning setbacks apply either way.