Garage doors Redwood City

Garage doors in Redwood City, from Shores design boards to flood vents

Three questions come before a new garage door is ordered in Redwood City. Is the lot in a FEMA flood zone, where a garage below the base flood elevation needs openings that let water through, sometimes built into the door itself? Is it in Redwood Shores, where an association design board must approve exterior changes before construction? And does the opener have the battery backup California has required since July 2019?

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  • Rules on this page checked against 13 public sources, October 2026
2019 flood maps
950 more parcels in the flood zone, Redwood Shores aside
Shores design review
RSOA for homes built since 1981; RSCA board for older ones
Levee notice
FEMA, April 2020: about 4,700 Shores households could be mapped in
Before work starts
Contractors need a Redwood City business license

The work

Door work that Redwood City's maps and boards reach

  • Keeping the flood vents when the door changes

    Where an attached garage sits below the base flood elevation in a FEMA special flood hazard area, its walls need flood openings that let water in and out without anyone touching them, and the space may serve only for parking, access and storage. FEMA accepts engineered openings built into a garage door, but warns that a later owner may swap that door for one without them. Before a flood-zone garage gets a new door, check whether the old one carries part of the required opening area.

  • Approval in Redwood Shores before the order

    The city tells owners in ZIP code 94065 that any change to the exterior of a property needs the governing design review board's approval before construction begins. A garage door is a large part of a townhouse or tract facade, so color, panel pattern and windows all count. Get the board's written answer first, then the quote, then the deposit, in that order, because a door ordered in the wrong style can sit in a warehouse while the paperwork catches up.

  • An opener that holds out through a shutoff

    Redwood City's fire department warns that PG&E may cut power for at least three days during extreme weather or wildfire conditions. Senate Bill 969 answered that risk for garages: since July 1, 2019, every residential automatic opener sold or installed in California must have a battery backup that keeps it running through an outage, and a replacement door may not be connected to an older opener that lacks one. Ask how the backup is charged and how to test it.

  • Sealing the edges against embers

    Among the steps Redwood City's wildfire page lists for keeping embers out of a house, next to ember-resistant vents and clearing the first five feet around the walls, is sealing gaps around garage doors. The same page sends owners to the State Fire Marshal's map to look up their zone, noting that the Very High zone may carry added requirements. Bottom seals, side and top weatherstripping and a snug fit at the header are the parts of a door job that answer it.

Redwood City's City Hall
Redwood City's City Hall. Photo: King of Hearts, CC BY-SA 4.0, via Wikimedia Commons.

The houses here

Pre-war garages out back, hillside tracts and a town on salt ponds

Redwood City's General Plan describes a city that grew outward in rings from downtown. Mount Carmel, southwest of El Camino Real, is largely pre-war: more than 40 percent of its houses were built before World War II, many of them Tudor and Spanish Colonial bungalows with detached garages behind. After the war, tracts such as Woodside Plaza and Farm Hill reached into the hills. In the mid-1960s the city annexed 25 square miles of tidelands and salt ponds east of U.S. 101, and Redwood Shores rose there from the 1960s through the 1980s, mostly in neighborhoods with their own homeowner associations. Each of those settings puts a different question to the person replacing a garage door.

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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.

Permits and local rules

City, association and federal rules on a Redwood City garage

  • Work requiring and exempt from permits

    The Building Division's handout, revised January 2026, lists the work that needs no permit: small sheds, fences up to seven feet, low retaining walls, finish work such as painting and cabinets, and a few minor electrical, gas, mechanical and plumbing items. Garage doors are not on it, although ordinary repairs need no application. Since the city takes building permit applications online only, through eTRAKiT, settle with the installer whether this job needs one and who files it.

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

  • Exterior review in Redwood Shores

    Two bodies hold architectural control. The Redwood Shores Owners Association is the umbrella association for every residential development built in the Shores since 1981, 3,173 single-family homes in 26 local associations among them, and its CC&Rs give its Modifications Committee exclusive jurisdiction over alterations to existing homes. For homes built before 1981, most of them west of Shell Parkway, the Architectural Design Board of the Redwood Shores Community Association administers the deed restrictions, and complying is not tied to membership.

    City of Redwood City (opens in a new tab)

  • The 2019 flood maps and Chapter 41

    FEMA's updated Flood Insurance Rate Maps for Redwood City took effect in 2019, and outside Redwood Shores they placed 950 more parcels in a Special Flood Hazard Area than the 2012 maps did. The city says flood insurance may then be required with a federally backed loan, or when an owner develops or significantly redevelops a property under Chapter 41 of the Municipal Code, written to National Flood Insurance Program standards. An interactive flood zone map is linked from the same page.

    City of Redwood City Engineering (opens in a new tab)

  • What FEMA counts as a flood opening

    Technical Bulletin 1 is blunt about garage doors. The door itself does not count, because someone would have to open it when a flood is expected. A door that opens itself when it senses water does not count either, since power cannot be counted on even with a backup source, and the gaps between a door and its jambs add nothing to the required open area. Engineered openings mounted in the door can count, though FEMA prefers walls where there is room.

    Source: FEMA, NFIP Technical Bulletin 1 (2020) (fema.gov)

State license for this work: D-28 Doors, Gates and Activating Devices, B General Building. Look up a contractor's license on the CSLB website (cslb.ca.gov).

Part by part

Three corners of Redwood City with their own garage questions

  • Redwood Shores

    Levees protect the Shores today. In April 2020 FEMA told the city that unless the levee system is modified, the flood map will be revised and Shores properties designated a Special Flood Hazard Area, which would oblige about 4,700 households to buy flood insurance. The city's sea level rise project aims to keep the levees accredited. Meanwhile any exterior change, a garage door included, goes to an association board first.

  • Mount Carmel

    The city's General Plan treats any home built before World War II as a potential historic resource until its history is documented, so on a pre-war lot it pays to ask Planning before changing the look of a garage, attached or detached. A detached garage with no ceiling outlet needs an electrician for the opener's power.

  • Emerald Lake Hills

    Emerald Hills began as summer homes around Emerald Lake and filled in slowly after utility improvements in the 1980s. It is unincorporated San Mateo County, though its ZIP code, 94062, is a Redwood City one, so a permit for garage work there comes from the county's Planning and Building Department rather than from City Hall.

Before you hire

Settle these before a Redwood City door goes in

  • In Redwood Shores, get the design board's written approval of the door's style and color before anything is ordered.
  • Ask whether the parcel is in a FEMA flood zone and, if the old door has engineered flood vents, make sure the new door keeps them.
  • Confirm the installer holds a Redwood City business license, which the city requires before work begins, and look up the D-28 license at cslb.ca.gov.
  • Ask which seals will close the gaps at the bottom, sides and top of the door, the step the city's wildfire page recommends.
  • In Emerald Lake Hills, ask who will file with San Mateo County if the job turns out to need a permit.

Questions

Before the old door comes down: Redwood City questions

Our Redwood Shores house was built in the 1990s. Who has to approve a new garage door?

The Redwood Shores Owners Association, through its Modifications Committee. Its declaration, recorded in 1981, gives that committee exclusive jurisdiction over alterations to existing homes in the developments built since then, and the city's notice to 94065 owners says the approval must come before construction. Homes from before 1981, mostly west of Shell Parkway, go to the Redwood Shores Community Association's Architectural Design Board instead.

Our garage is in a flood zone. Can the garage door itself serve as its flood opening?

No. FEMA's Technical Bulletin 1 says a garage door does not meet the requirement, because it needs a person to open it, and neither does a door rigged to open when it detects water. Gaps around the door do not count toward the open area. Engineered openings installed in the door can, which is why a replacement should match the vents in the one it replaces.

Does replacing a garage door in Redwood City need a building permit?

The city's 2026 list of work exempt from permits does not include garage doors, though it says ordinary repairs need no application. A broken spring or a bent track is repair; a new door and opener is a closer call. Ask the Building Division, and remember that applications are accepted online only, through eTRAKiT.

Our address says Redwood City 94062, but we live in Emerald Lake Hills. Which rules apply?

San Mateo County's. Emerald Lake Hills is an unincorporated community, so building permits come from the county's Planning and Building Department, even though the mail says Redwood City. The state's opener law is the same either way: any new opener needs a battery backup, and a new door cannot be hooked to an opener without one.

During the last outage our garage door would not open. What does a new opener have to do now?

Keep working on battery. Health and Safety Code 19892 has required, since July 1, 2019, a battery backup designed to keep a residential opener operating without interruption during an outage, and Redwood City's fire department notes that PG&E shutoffs can last at least three days. Ask the installer how to release the door by hand as well, for when the battery runs down.

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.

Garage door work in Redwood City? Tell us what you see.

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