Whole-house repipe permits in San Francisco, CA

General California guidance last updated May 22, 2026 · San Francisco data verified August 9, 2026

What plumbing contractors need to know about pulling a whole-house repipe permit in San Francisco (San Francisco County).

Short answer

In California, a whole-house repipe needs a plumbing permit, pulled by a licensed C-36 contractor under the California Plumbing Code (Title 24, Part 5). The permit covers replacing existing supply (and sometimes drain/waste/vent) piping; common drivers include failing galvanized or polybutylene supply, slab leaks, low-pressure complaints, and pinhole leaks in copper.

San Francisco accepts submittal through the Permit Services at DBI (online permits and tracking) and has adopted the SF Building Code (2025 edition, amending the 2025 California Building Code). Fee details and sources are below.

San Francisco permit data

Sourced from public City of San Francisco documents — every field carries the source URL and verification date.

Permit portal
Permit Services at DBI (online permits and tracking)

verified Aug 9, 2026 · source · Online filing for electrical, plumbing, mechanical, and Boiler-to-Operate permits (one-time contractor registration required); In-House Review building permits are filed via Electronic Plan Review (EPR). The PermitSF portal (https://sanfranciscoca.portal.opengov.com/) covers sign, awning, no-plans reroofing, and door/window/siding replacement permits. Permit tracking at https://dbiweb02.sfgov.org/dbi_building/

Adopted code edition

SF Building Code (2025 edition, amending the 2025 California Building Code)

verified Aug 9, 2026 · source · Ordinance 231-25 repealed the 2022 Building Code and enacted the 2025 SF Building Code — the 2025 California Building Code and 2025 California Residential Code as further amended by San Francisco — operative January 1, 2026 (ordinance text: https://sfbos.org/sites/default/files/o0231-25.pdf). Designed to be used in conjunction with the 2025 California Building and Residential Codes.

The general picture in California

A repipe replaces the hot/cold supply distribution throughout a structure — most commonly converting galvanized or polybutylene to PEX or copper. The permit covers pipe material, sizing, routing, fastening, insulation, manifold or trunk-and-branch layout, and pressure testing. Drain/waste/vent repipes add slope, venting, and cleanout requirements. Drywall and finish repairs are out of scope of the plumbing permit but may require their own permits if structural framing is altered.

For deeper background that isn't San Francisco-specific, see the statewide whole-house repipe guide.

Typically needs a permit

Whole-house repipe itself triggers a permit in nearly every California jurisdiction, San Francisco included. San Francisco-specific variations are confirmed with the issuing department above.

Usually doesn't (general norm)

  • Replacing an exposed section of supply pipe with the same material and routing (repair)
  • Replacing a fixture supply line, angle stop, or stop valve
  • Tightening or replacing a single fitting on existing pipe

Documents & plans generally required

Common reasons whole-house repipe applications get bounced

Code-rooted patterns across California — not a San Francisco-specific rejection rate.

The inspection sequence

A typical order — the number of stops and exact sequence vary by jurisdiction and scope.

  1. 1Rough/cover inspection with new piping exposed, pressure-tested, and supported
  2. 2Insulation inspection for Title 24 hot-water-line insulation where applicable
  3. 3Final inspection with fixtures reconnected, pressure restored, and the system tested

Licensing — who can pull it

Repipes in California are performed by a C-36 (Plumbing) licensed contractor; a B (General Building) contractor may pull within a larger project under CSLB rules. The licensed contractor doing the work typically pulls the permit.

Other verified San Francisco notes

Frequently asked questions

Do I need a permit for a whole-house repipe in California?

Yes — replacing supply (and/or DWV) piping throughout a structure is permitted plumbing work in every California jurisdiction. The permit covers material, sizing, routing, and pressure testing; the inspector typically signs off at rough (pre-cover) and at final.

Is PEX allowed throughout California?

Yes — PEX has been approved statewide for potable water under the California Plumbing Code for over a decade. Some jurisdictions still require specific listings or limit certain fitting types; the listing should be shown on the permit submittal.

Do I need a separate permit for drywall repair?

The plumbing permit covers the pipe work only. Drywall and finish repair are typically follow-up work and don't require a separate permit unless structural framing is altered. Inspectors will require pipe access (open walls or strategic cuts) at the rough inspection.

Can a repipe be done in an occupied home?

Generally yes — most residential repipes are done with the occupants in place, with water shut off for short periods. The permit doesn't restrict occupancy; sequencing is a contractor/owner decision.

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