San Jose exempts a deck from a building permit only when it is detached, 200 square feet or smaller, no more than 30 inches above grade, and not part of a required exit; otherwise a permit is required.
Zoning, setbacks, attachment, stairs, guardrails, fire separation, utilities, easements, and overlays remain separate.
What this tells youComputed rule answer
How precise this isComputed rule answer
Official data checkedSan Jose when a building permit is required
Next stepCheck official deck/accessory-structure rules with deck dimensions and height.
Permit-exempt deckDetached; 200 sq ft or smaller; 30 in or lower; not part of a required exit
Permit requiredAny exemption condition is not met
Still verifyZoning, setbacks, attachment, stairs, guardrails, fire separation, and easements