Electrical Redwood City

What Redwood City's inspectors check on a panel, a charger or an outlet

Redwood City exempts almost no electrical work from permits: beyond lamp replacement and similar minor repair, the job needs one. Its handouts then set the details. An outdoor panel must be rated for weather, so an old indoor panel in a wooden doghouse box cannot simply be swapped in place, a replaced outlet in most living areas needs arc-fault protection, and a passed service upgrade gets a tag on the panel and a notice to PG&E.

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  • Rules on this page checked against 14 public sources, October 2026
Redwood City's City Hall
Redwood City's City Hall. Photo: King of Hearts, CC BY-SA 4.0, via Wikimedia Commons.
Permit-exempt electrical
Minor repair such as replacing lamps, and little else
Outdoor service panels
NEMA Type 3 or 3R; no new wooden doghouse enclosures
Emergency repairs
Permit application due by the next working business day
Electricity supplier
Peninsula Clean Energy; PG&E owns the service drop and meter

Permits and local rules

Four Redwood City handouts to hold a quote against

  1. Work requiring and work exempt from permits

    Revised in January 2026, the list exempts only minor electrical repair, such as replacing lamps or connecting approved portable equipment to permanent receptacles, along with radio and television transmitting equipment and temporary testing systems. Ordinary repairs may not include adding to, altering, replacing or relocating electric wiring. Where an emergency forces a replacement before a permit can be issued, the application must reach the building official within the next working business day.

    City of Redwood City Building Division (opens in a new tab)

  2. Residential electrical service upgrades

    Masts need two secure supports, and service-drop wires must clear a roof flatter than 4:12 by 8 feet or a steeper one by 3. The grounding electrode conductor connects to metal water piping within 5 feet of where it enters the house, supplemented by a ground rod, which in most upgrades means a run to the main water shutoff. Only PG&E may disconnect its own conductors, and when the inspection passes, the inspector tags the panel and informs PG&E it may supply power.

    City of Redwood City Building Division (opens in a new tab)

  3. AFCI requirements in dwellings

    The city's summary of California Electrical Code 210.12 and 406.4(D)(4) covers new circuits, circuits that are modified or extended, replacement receptacles and service work. When a service is upgraded or relocated and sections of branch-circuit wiring are replaced, those circuits need arc-fault protection, unless the panel moved and less than 6 feet of wire reconnects the original circuits. Breaker and outlet test buttons must stay readily accessible, reachable without tools, ladders or climbing over things.

    City of Redwood City Building Division (opens in a new tab)

  4. Exterior changes in Redwood Shores

    For any change to the exterior of a property in ZIP code 94065, the city's handout says the governing design board must approve it before construction: the Redwood Shores Owners Association for homes built since 1981, or the Redwood Shores Community Association's board for older ones, most of them west of Shell Parkway. A separate city policy recommends filing plans the association has stamped, dated and signed alongside the permit application, to avoid rounds of plan revisions if the association objects later.

    City of Redwood City Building Division (opens in a new tab)

State license for this work: C-10 Electrical. Look up a contractor's license on the CSLB website (cslb.ca.gov).

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Free to request, and you agree the scope and price with the person you hire before work starts. In California, a job over $1,000 in labor and materials, or one that needs a building permit, must be done by a contractor licensed by the CSLB in the right class. Ask for the license number and check it at cslb.ca.gov.

Electricians inspecting the electrical panels and meters on a multifamily house
Electricians inspecting the electrical panels and meters on a multifamily house. Photo: Tomwsulcer, CC0, via Wikimedia Commons.

The houses here

Pre-1900 cottages, pre-war blocks and a planned town on salt ponds

Redwood City's housing reaches further back than most Peninsula suburbs. The General Plan places the city's largest group of pre-1900 buildings in the Stambaugh-Heller district of the Eastern Addition, counts more than 40 percent of Mount Carmel as pre-war, and describes post-war subdivisions like Farm Hill and Woodside Plaza pushing up the hillsides, with Redwood Shores built from the 1960s through the 1980s on annexed tidelands. Each era left a different service on the outside wall. The city's upgrade handout describes one that turns up on older houses: an indoor-rated panel inside a small wooden box, which it calls a doghouse and no longer allows to be built. Where a newer panel is set partly into a stucco wall, the stucco around it is rebuilt in layers and inspected.

The work

Redwood City jobs where a city handout settles the details

  1. Retiring a doghouse service panel

    Many older Redwood City services are NEMA Type 1 panels, rated only for indoor use, sitting in a wooden box on an exterior wall. The upgrade handout bans new doghouses and requires every exterior panel, including one left in an existing doghouse, to be NEMA Type 3 or 3R. The mast must be rigid steel conduit, at least 1 1/4 inches in trade size and 30 inches above the roof, and it may carry power conductors only, so a cable TV or phone line strung on it has to move.

  2. A semi-flush panel in a stucco wall

    Setting a new panel partly into the wall takes a listed flange kit tied into the water-resistive barrier. On stucco, the handout has the stucco broken back at least 6 inches around the panel, new paper lapped shingle fashion over the old, and new wire lath fastened to the studs; the lath is inspected with the service upgrade, and no stucco goes on until it passes. A surface-mounted panel instead needs a quarter-inch air space behind it, with its edges left uncaulked.

  3. Outlets swapped in living areas

    Replacing a receptacle in a kitchen, bedroom, living room, hallway, closet, laundry area or similar room brings arc-fault protection with it, from a combination-type AFCI breaker or an outlet-branch-circuit AFCI ahead of the new receptacle. Where the old box has no ground wire, one is added or the receptacle becomes a dual-function AFCI-GFCI type. The city's handout warns that most houses have multi-wire branch circuits, which some brands of AFCI breaker cannot serve.

  4. Hard-wired alarms on a panel that refuses AFCIs

    New wiring for hard-wired smoke and carbon monoxide alarms needs arc-fault protection that only a circuit breaker can supply, so a panel that cannot accept AFCI breakers has to be replaced or supplemented with a subpanel. Retrofitted alarms may run on batteries instead. For many permitted jobs, solar among them, the owner can sign the city's self-certification that the alarms are present, under ten years old and labeled with their install date, in place of an inspector's check.

  5. A Level 2 charger in the garage

    A charger in a garage, carport or outdoors takes an electrical permit, and the city's guideline lets you fill in its load worksheet, attach the charger specifications and book a plan review at the counter. Most Level 2 units need a 40-amp, two-pole circuit. The guideline suggests mounting the charger on a garage side wall, out of the car's path, to avoid a pipe bollard, and asks that someone be home at inspection so the inspector can reach the meter and the charger.

Before you hire

What to settle before work starts on a Redwood City panel

  • If the meter sits in a wooden doghouse box, ask which weather-rated panel replaces it and whether the box comes off the wall.
  • Ask whether the quote covers rebuilding stucco around a semi-flush panel, and who books the lath inspection that comes with it.
  • Ask how many outlets the job replaces in living areas, and how each one gets arc-fault protection on an older panel.
  • In Redwood Shores, ask whether the work touches the exterior and needs the design board's stamp before the permit application goes in.
  • Check their C-10 Electrical license number on the CSLB website and make sure it matches the name on the contract.

Free, no obligation. Next, add your details in the request form.

Questions

Redwood City panel, outlet and charger questions

Do I need a permit to replace an outlet in Redwood City?

Yes. The city's exempt list stops at minor repairs such as replacing lamps or connecting approved portable equipment, and its definition of ordinary repairs excludes replacing or relocating electric wiring. A replaced receptacle in a bedroom, kitchen, living area, hallway or similar room also needs arc-fault protection, so even an outlet swap is permit work with an inspection.

Our panel failed at night and the house has no power. Can an electrician fix it before a permit is issued?

Yes, the code allows emergency repairs. Redwood City's permit list says that when equipment must be replaced or repaired in an emergency, the permit application has to be submitted to the building official within the next working business day. The work is then inspected like any other permitted job.

Is Peninsula Clean Energy or PG&E the utility for a Redwood City service upgrade?

Both have a part. The city's electrification flyer addresses residents as Peninsula Clean Energy customers, the agency that buys the power, while PG&E owns the service drop, meter and wires. That is why the city's service handouts quote PG&E's clearance and conduit rules, and why only PG&E may disconnect a service before an upgrade and reconnect it after the inspector's tag.

Can battery smoke alarms satisfy the inspector on a Redwood City permit?

Retrofitted alarms may be battery operated. On the city's self-certification, though, the owner signs under penalty of perjury that each alarm is under ten years old, labeled with its install date and in place in every bedroom, outside each sleeping area and on each story, with carbon monoxide alarms outside sleeping areas and on each story too. An alarm past ten years should be replaced first.

We are adding solar to a house with a 100-amp service. What will the city ask for?

The photovoltaic checklist asks for an electrical diagram showing how the system ties into the PG&E meter and main, with the rated amperage, busbar and voltage of the existing service equipment. When the service is 100 amps, it also asks for photos of the panel with the cover on and with it off, so the reviewer can see the existing equipment.

Where these facts come from

Checked against these public sources in October 2026. Rules and programs change: confirm permit requirements with the city before work starts, and a contractor's license on the CSLB website.

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