San Diego water heater permit: how the City process works

Last verified: November 11, 2026

Written and checked by the DuloCore research team

A San Diego water heater permit is required for a replacement, and inside city limits it is usually a Simple "No-Plan" permit from the Development Services Department; the fee is built into the cost estimator.

Which permit you need

The City lists "Water Heater Replacement" under plumbing and says single-family homes and duplexes need a Simple MEP Permit with no plans (City permit guide, accessed Nov 11, 2026). The Simple No-Plan Plumbing/Gas permit covers "Water heater replacements, except tankless types" (City Simple No-Plan permit page, accessed Nov 11, 2026). A tankless swap, or any work that does not fit that list, falls under the plan-required plumbing permit (City Plumbing/Gas Permit page, accessed Nov 11, 2026), so call Development Services before you book one.

Homeowners, property owners and licensed contractors can apply. In the online portal, choose "No-Plan - Residential - Combination Mech/Elec/Plum", and the permit normally arrives within two business days (City Simple No-Plan permit page, accessed Nov 11, 2026). Designated historic properties may need a historic review first.

What it costs

Information Bulletin 103 (May 2026) lists a water heater fee of $122.97 each (City of San Diego IB 103, accessed Nov 11, 2026).

A heat pump conversion that adds a circuit also triggers the residential circuit fee: $176.57 for the first five 15 to 45 amp circuits, and $176.57 for a panel replacement up to 200 amps (City of San Diego IB 103, accessed Nov 11, 2026). The City calculates your invoice, so treat these as the published line items.

Inspections

The City's Simple Permit inspection card tracks a "Water Heater (with tank)" and "Adding Circuits" line. Schedule by calling 858-581-7111 or online; field inspections run Monday to Friday, an adult must be present, and a permit expires if the work is not validated by inspection within 180 days (City Form DS-405, accessed Nov 11, 2026).

What the inspector checks

Expect these California Plumbing Code points, as summarized in a handout from the City of Escondido, also in San Diego County (Escondido code handout, accessed Nov 11, 2026):

• Two earthquake straps, in the top and bottom thirds, the lower one at least 4 inches above the controls.
• A pressure relief drain to the outside, ending 6 to 24 inches above the ground.
• Gas burners 18 inches above a garage floor unless the unit is flammable-vapor ignition resistant.
• An expansion tank where a check valve or backflow preventer closes the system.

Strapping is state law: all new, replacement and existing residential water heaters must be braced, anchored or strapped, and a seller must certify this in writing to a buyer (Health and Safety Code 19211, accessed Nov 11, 2026). We checked the wording against a text copy (accessed Nov 11, 2026).

Outside city limits

Unincorporated areas use the County of San Diego Planning & Development Services. We could not load the County's site when we checked on November 11, 2026, so confirm the County's water heater steps with PDS directly. Other incorporated cities issue their own permits.

Once you know the route, pick a licensed contractor with the installer checklist, and see replacement cost by type for the work itself.