Window Replacementin Santa Monica, CA
Window replacement in Santa Monica uses a Single Trade Permit that the City reviews the same day or within five working days, and the plans must show every window and door being replaced. Windows on a landmark or in a historic district, such as Third Street Neighborhood, need administrative approval or a certificate of appropriateness first.
Santa Monica's windows have a mild climate and a long paper trail. NOAA's 1991 to 2020 normals for the Santa Monica Municipal Airport show 13.45 inches of rain a year, 82 percent of it from December through March, an August average high of 76.5 F and only about 4.8 days a year at or above 90 F. The airport station records no days at or below 32 F. The paper trail comes from age and ownership: 71.7 percent of homes were built before 1980, 63.7 percent are in buildings of five or more units, and 74.6 percent of households rent.
This page covers the City's permit table, historic districts, apartment and condo approvals, energy glazing, the fire map question, retrofit versus full-frame work and cost. Regional ranges and the product comparison are on our window replacement page, and every trade we run in town is on the Santa Monica service page.
What the City's window and door table and historic code say about replacement
Where windows permits come from in Santa Monica: City of Santa Monica Community Development Department, Building and Safety Division.
- The City's window and door replacement table lists a Single Trade Permit application, Same-Day or Minor Plan Review (same-day takes 1 day, minor takes five working days), and City Planning then Building and Safety as reviewers. Plans must show every window and door being replaced on floor plans and elevations, and a Means & Methods Plan applies to tenant-occupied residential buildings.
- The window table says landmark or historic preservation rules may apply, and that Architectural Review Board approval is required before the permit for exterior work except on single-family properties. The single-family thresholds list window and door replacement as Same-Day Plan Review.
- In the Third Street Neighborhood Historic District, SMMC 9.58.020 requires a certificate of administrative approval for new windows or doors and for skylights on contributing and noncontributing buildings, and a certificate of appropriateness for altering the front, side or rear of a structure.
- SMMC 8.36 adopts the statewide 2025 Building Energy Efficiency Standards as Santa Monica's Energy Code, and the City's own energy amendments (Ord. 2790CCS) were repealed on 10/14/2025, leaving the state standards as the local energy code.
Sources for these rules
Window replacement permit in Santa Monica: the Single Trade Permit and what the plans must show
The City's window and door replacement table lists a Single Trade Permit application, Same-Day or Minor Plan Review, and City Planning followed by Building and Safety as reviewers. Same-Day review takes one day and Minor review five working days, and the City's single-family thresholds list window and door replacement as Same-Day. The plans must show every window and door being replaced on floor plans and elevations, which is why we measure and number each opening before the drawings are done.
Applications go in through the paperless Electronic Plan Review system, and the Permit Services Center is open 8:00 a.m. to 3:00 p.m. Monday through Thursday. A licensed contractor pulling the permit needs, among other things the City lists, a current Santa Monica business license.
As MDG Builders, CSLB #1040337, we prepare the window schedule, handle the permit and manage the job, and licensed subcontractors install the units. Each subcontractor's license number and certificate of insurance are yours to request.
Replacement windows in a Santa Monica historic district or landmark house
In the Third Street Neighborhood Historic District, SMMC 9.58.020 requires a certificate of administrative approval for new windows, doors and skylights on contributing and noncontributing buildings, and a certificate of appropriateness for altering the front, side or rear of a structure. The district, designated in 1990, is bungalows set into the hillside east of Third Street. Four more districts followed: Bay Street, San Vicente Boulevard's courtyard apartments, 11th Street and 4th Street Corner.
On a landmark or a contributing building, SMMC 9.56.070 bars alteration without a certificate of appropriateness, while ordinary maintenance with no detrimental change is approved by the Landmarks Commission Secretary. The ordinance defines a building's exterior features to include the kind, color and texture of its building material, so a wood-to-vinyl swap is a question to ask before anything is ordered.
When a certificate is needed, the certificate and administrative approval fees are waived and the State Historical Building Code applies to alterations. Ask the City whether your address is in a district; the 11th Street Bungalow district, for one, covers early twentieth-century homes on what was once the town's eastern edge.
Replacing windows in a Santa Monica apartment or condo building
Most homes here are in buildings of five or more units, and that changes the process. The window table says Architectural Review Board approval is required before the permit for exterior work, except on single-family properties. So an owner who wants new windows on a street-facing unit may face that approval step first, and a condo association's own rules sit on top of it.
If tenants live in the building, the table also calls for a Means and Methods Plan, and SMMC 8.100 can require notices, security posted with the City and, if the work will last 30 days or more, a City-prepared complaint sign. Window crews open every wall of a unit within a day or two, so say in the plan how the tenant is told and when the openings will be closed.
Ask the property manager early about delivery elevators, the days work is allowed in the common areas and what insurance certificate the building wants. The owner stays responsible for violations even when a contractor causes them.
Are double-pane windows required in Santa Monica, and what do the ratings mean?
California's Title 24, Part 6 requires dual glazing labeled and certified by the National Fenestration Rating Council for replacement windows and doors in residential buildings of three stories or less, as the Los Angeles express permit bulletin quotes it. Santa Monica's municipal code adopts the statewide 2025 Building Energy Efficiency Standards as its Energy Code, and the City's own amendments were repealed on October 14, 2025.
The label lists a U-factor, which measures heat flow (lower insulates better), and a solar heat gain coefficient, which measures how much sun heat passes through (lower blocks more). Handouts disagree on the exact limits by climate zone, so we print none and ask each manufacturer for the NFRC label for the model priced.
With so few hot days and no freezing, the case for new glass here rests on drafts, west-facing sun and worn weatherstripping more than on the thermostat. A south or west living room is where a lower solar heat gain number pays off.
Do Santa Monica windows need fire-resistant glass in a fire hazard zone?
Most of Santa Monica is not wildland. In the County copy of CAL FIRE's local responsibility hazard zones, revised August 2025, 120 of 134 land sample points were non-wildland, but 8 were Very High, 2 High and 4 Moderate, all in the northwest corner of the city. The City adopted its own Fire Hazard Severity Zones map in June 2025 under SMMC 8.46, kept on file at the City Clerk's office, and we could not confirm that it matches the County copy.
The City also adopted the 2025 Wildland-Urban Interface Code, whose vegetation rules apply to land designated High or Very High. We did not find a Santa Monica page that says what a window-only replacement must meet in a zone.
Los Angeles asks for at least one tempered pane in multilayer glazing for exterior windows in its fire zones, as our Los Angeles window page explains, but that is not Santa Monica's rule. Ask Building and Safety whether your address is mapped and what glazing it wants before ordering.
Retrofit or full-frame replacement windows in a Santa Monica stucco cottage
A retrofit, or insert, window slides into the existing frame, which keeps the stucco and trim as they are. A full-frame replacement removes the old frame, so the flashing, the stucco edge and the interior casing have to be rebuilt. Santa Monica's 1940s cottages are typically stucco over wood, and an insert is cheaper when the frames are sound, but a frame with rot or failed flashing is better replaced entirely.
Any paid work that disturbs paint in a home built before 1978 falls under the federal EPA lead-safe renovation rule, and with 71.7 percent of local homes built before 1980, that is common. Ask how dust is contained at each opening.
SMMC 4.12.110 allows construction from 8:00 a.m. to 6:00 p.m. on weekdays and 9:00 a.m. to 5:00 p.m. on Saturday, with no work on Sundays, and every permitted site needs the bilingual work-hours sign. Our post on how general contractors use subcontractors explains who answers to whom on the day crews arrive.
How much do replacement windows cost in Santa Monica, and is there a tax credit?
We found no Santa Monica study, so the figures are regional. Remodeling magazine's 2025 Cost vs. Value report for Los Angeles prices a vinyl window replacement job at $23,783 with 83.2 percent recouped at resale, and wood at $27,913 with 81.9 percent. Angi's Los Angeles page puts the average at $19,356, typical $16,359 to $22,377. Our own safe range is about $550 to $1,200 per vinyl window installed and $14,000 to $28,000 for a 10 to 15 window house.
Fire-zone frames, tempered or laminated glass, arched openings and stucco repair raise it. The federal 25C energy credit is not allowed for property placed in service after December 31, 2025, according to the IRS, even though many pages still advertise it.
A written proposal that lists each opening, the model and the permit is the real price. Ask what the quote includes for trim, stucco patching and disposal.
Window details from Santa Monica homes
Three views of the frames, glass and flashing behind a Santa Monica window replacement. Tap a photo to enlarge it.
What windows costs around Santa Monica
On our window replacement page the regional range is about $550 to $1,200 for a vinyl window installed, with a whole house of 10 to 15 windows at about $14,000 to $28,000, from Remodeling magazine, Angi and ConsumerAffairs data we rate medium. We print no Santa Monica permit fee. Neighbors have their own departments: see Los Angeles, Glendale and Pasadena. New glass often goes with bathroom remodeling in Santa Monica, a room addition in Santa Monica, an ADU in Santa Monica or painting in Los Angeles. Our contractor license guide shows how to check a glazing bid.
| What it covers | Typical range |
|---|---|
| Vinyl window, installed, each | $550 to $1,150 |
| Wood or fiberglass window, installed, each | $950 to $2,400 |
| Whole house, 10 to 15 windows | $14,000 to $28,000 |
| Glass options, per window | Double-pane $500 to $2,000. low-E $300 to $1,100. tempered $200 to $700. |
| Remodeling Cost vs. Value 2025, Los Angeles | Vinyl $23,783. wood $27,913. |
| New or enlarged egress opening | $3,200 to $6,500 |
Other work we manage in Santa Monica
Questions about window replacement in Santa Monica homes and rentals
Do I need a permit to replace windows in Santa Monica?
Yes, expect a Single Trade Permit. The City's table lists Same-Day or Minor Plan Review, with a one-day or five-working-day review, and the plans must show every window and door replaced. Historic buildings and apartment buildings add approval steps first. Ask the Permit Services Center to confirm your scope, because we did not find a page that names an exempt like-for-like swap.
How long does it take for new windows to be installed?
Allow weeks for ordering and a few days for installation once units arrive. The permit itself may take one day or five working days to review. Custom sizes, tempered glass and historic approvals lengthen the wait, and lead times vary by manufacturer. Ask for the delivery date in writing and for the crew's plan for closing each opening each day.
How much does window replacement cost in Santa Monica?
We found no Santa Monica study, so we use regional figures: about $550 to $1,200 per vinyl window installed and $14,000 to $28,000 for a whole house of 10 to 15 windows. Wood, fiberglass, fire-zone glass, arches and stucco repair cost more. Our written proposal, listing each opening, is the real price.
Do I need special fire-resistant windows if I live in a fire hazard zone?
Possibly, if your address is mapped. The City adopted a Fire Hazard Severity Zones map in June 2025, and a County map copy shows Very High, High and Moderate points in the city's northwest corner. We found no Santa Monica rule for a window-only job, so ask Building and Safety before ordering any glass for a mapped lot.
Are double pane windows required in California?
For residential replacement windows and doors in buildings of three stories or less, Title 24, Part 6 calls for dual glazing certified and labeled by the National Fenestration Rating Council, according to Los Angeles's permit bulletin quoting the code. Santa Monica uses the statewide Energy Code. Ask for the NFRC label on each model, because U-factor and solar heat gain limits depend on climate zone.
What do U-factor and SHGC ratings mean?
U-factor measures how fast heat moves through the window, so a lower number insulates better. Solar heat gain coefficient measures how much sun heat comes through, so a lower number blocks more. Both appear on the NFRC label. Santa Monica's mild climate makes SHGC the more useful number for west-facing rooms, but required limits depend on the code and zone.
Can I install replacement windows in a Santa Monica historic district?
Yes, with approval. In the Third Street Neighborhood Historic District, new windows and doors need a certificate of administrative approval, and altering the front, side or rear needs a certificate of appropriateness. On a landmark, ordinary maintenance with no detrimental change is approved by the Landmarks Commission Secretary. Ask Planning before ordering, and keep the original material if you can.
Is replacing home windows worth it?
Often for comfort and resale, rarely for energy savings alone. Remodeling magazine's 2025 report for Los Angeles shows vinyl replacement recouping 83.2 percent of its cost at resale, and wood 81.9 percent. We do not print energy-savings claims without a source. Sun, drafts, rot and worn seals are the better reasons to replace.
Is there a federal tax credit for new windows in 2026?
No. The IRS says the 25C energy-efficient home improvement credit is not allowed for property placed in service after December 31, 2025. Many articles and some contractor pages still advertise it. Ask any company that mentions a tax credit to show the current IRS rule in writing, and check state or utility programs separately.
Tell us about your Santa Monica windows
Send the neighborhood, the year the building was built, how many windows and doors you want changed and whether it is a house, a condo or a rental, and we will plan the measuring visit around that.