FAQs

Plumbing Permit FAQs in Los Angeles

Common questions about Los Angeles plumbing permits, water heaters, sewer connections, and LADBS.

Frequently Asked Questions: Los Angeles Plumbing Permits

The following answers address the most common questions about plumbing permits in Los Angeles. For project-specific guidance, describe your project to Zermit AI at app.zermit.ai.

Do I need a permit to replace a water heater in Los Angeles?

Yes. Water heater replacements in Los Angeles require a plumbing permit from LADBS. The installation must be inspected to verify correct seismic strapping, TPRV installation, venting, and gas connections. Your licensed plumber typically handles the permit as part of the replacement service.

Do I need a permit to replace a toilet or faucet?

Replacing a toilet or faucet in the exact same location without modifying the drain or supply piping generally does not require a Los Angeles plumbing permit. However, if the drain location changes, new piping is required, or any part of the plumbing system is modified, a permit is required.

Do I need a permit to repipe my house in Los Angeles?

Yes. Whole-house repipe projects involve significant modification of the water supply system and require a plumbing permit from LADBS. Repipe work must be inspected before walls are closed.

Does sewer lateral replacement require a permit in Los Angeles?

Yes. Sewer lateral work requires both an LADBS plumbing permit and an S-Permit from the Los Angeles Bureau of Engineering. Sanitation connection fees may also apply. Begin both permit processes simultaneously to avoid sequential delays.

Who can pull a plumbing permit in Los Angeles?

Licensed plumbing contractors (CSLB C-36) and property owners acting as owner-builders may apply for plumbing permits in Los Angeles. Commercial building plumbing permits must be pulled by a C-36 licensed contractor.

What inspections are required for plumbing work in Los Angeles?

Plumbing projects typically require a rough-in inspection before piping is concealed, and a final inspection after fixtures are installed and tested. Underground work requires inspection before backfilling. Water heater replacements require a specific plumbing inspection.

How much does a plumbing permit cost in Los Angeles?

Costs vary by project scope. Water heater replacement permits are relatively modest. Comprehensive repipe projects or new plumbing systems involve higher fees. Use the LADBS Permit Fee Calculator or describe your project to Zermit AI for an estimate.

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