When does a retaining wall need a building permit in San Jose?

San José exempts only retaining walls 4 ft or less from the bottom of the footing that hold back no extra load. A wall 4 ft or less from footing to top, with no load above it, needs no permit in San José.

Where do I apply for a retaining wall permit in San Jose?

Apply through SJPermits.org, or call (408) 535-3555.

Do you need a permit for a retaining wall in San Jose, CA?

It depends on the details of your project.

Retaining walls up to 4 ft, measured from the bottom of the footing, need no permit.

A wall that holds back extra load (a surcharge) needs a permit at any height.

The limit is the same as the model building code.

A person last checked these rules on October 19, 2026. This is guidance only, so confirm with San Jose before you build.

Permits a retaining wall can need in San Jose

Permit	When it applies
Building permit	San José exempts only retaining walls 4 ft or less from the bottom of the footing that hold back no extra load.
Floodplain development permit	Grading and walls in a FEMA special flood hazard area need a floodplain permit.

Local details

Call 811 at least a few days before you dig footings or post holes. Utility locating is free.
HOA covenants and deed restrictions can be stricter than city rules. Check yours before you build.

How to apply

Common questions

When does a retaining wall need a building permit in San Jose?: San José exempts only retaining walls 4 ft or less from the bottom of the footing that hold back no extra load. A wall 4 ft or less from footing to top, with no load above it, needs no permit in San José.
Where do I apply for a retaining wall permit in San Jose?: Apply through SJPermits.org, or call (408) 535-3555.

Sources

San José Bulletin 201, When Is a Building Permit Required? (10/10/2024), other items. Checked 2026-10-22
Retaining walls not over 4 feet in height measured from the bottom of the footing to the top of the wall and that are not supporting a surcharge... [Driveways and walkways that] do not exceed 30 inches above adjacent grade... Swimming pools that are prefabr…
44 CFR 59.1, definition of development (NFIP). Checked 2026-10-19
Development means any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures...
44 CFR 60.3, floodplain management criteria. Checked 2026-10-19
Require permits for all proposed construction or other development in the community...