Plumbing Permits: Antioch vs San Ramon

Antioch requires plumbing permits for most fixture replacements, water heater swaps, repipes, sewer lateral work, and backflow assemblies under the California Plumbing Code adopted at AMC Title 8. Low-flow fixture requirements apply at time of sale under CA Civil Code 1101.

Plumbing permits in San Ramon are issued through Contra Costa County Building Inspection Division and governed by the 2022 California Plumbing Code. Permits are required for water heater replacements, repiping, sewer lateral work, gas line modifications, backflow prevention devices, and fixture additions. Like-for-like fixture swaps (faucets, toilets in existing location) generally do not require permits, but water heater and gas work always do. EBMUD or DSRSD serves as the water provider depending on location, and Central Contra Costa Sanitary District (Central San) handles sewer permits.