San Diego requires a building permit for a residential deck over 200 square feet, more than 30 inches above grade at any point, attached to a dwelling, or serving the main exit door.
Zoning, coastal, historic, brush-management, geologic, guardrail, stair, setback, and structural rules can still apply below a single trigger.
What this tells youComputed rule answer
How precise this isComputed rule answer
Official data checkedSan Diego Information Bulletin 211
Next stepCheck official deck/accessory-structure rules with deck dimensions and height.
Permit requiredOver 200 sq ft; more than 30 in above grade; attached to dwelling; or serves main exit door
Possible exemptionOnly when none of the listed triggers apply
Still verifyZoning, coastal/historic overlays, brush/geology, guardrails, stairs, and setbacks