Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across San Marino
Window installation in San Marino runs $1,400-$4,800 per opening for most homes here, and a full estate-scale replacement often lands between $45,000 and $120,000 depending on sightline matching and the manufacturer line specified. Lead times, not labor, set the calendar in this city. The Architectural Design Review Board requires material samples and elevation drawings before a permit is issued, which adds weeks to any project. Call (888) 635-0804 to get your free estimate started with a live person, not a phone tree. Our crews know the 91108 zip code, the board’s expectations, and the difference between a window that clears review on the first submittal and one that gets sent back.
Why TruePane Windows & Doors Is San Marino’s Preferred Window Installation Company
TruePane has worked on enough Spanish Colonial Revival and Tudor homes in San Marino to know that this is not a commodity window market. Our technicians arrive in uniform, background-checked, and measure every opening twice before ordering anything. We register both manufacturer warranty layers in writing before the truck leaves your driveway, and we put a Done Right Promise behind every installation. If the pane is not true, the job is not done; that is the rule Dale Kessler founded this company on in 2008, and it governs how our crews work on Hungtington Drive, Lombardy Road, and every street in between.
Homeowners here have told us the same story for years: a previous contractor promised a quick swap, the board rejected the vinyl double-hungs, and six weeks disappeared. We plan around that reality from day one. Our lead times are quoted honestly, with manufacturer lines compared side by side on paper so you see exactly what you are buying. We do not submit a permit package until the material samples and grid patterns are ready for the board to inspect, because that is what San Marino requires and what neighboring cities do not.
We are an authorized installer for more than a dozen manufacturer lines, including, PGT, and CGI. That matters in San Marino because the board expects premium aluminum-clad wood, divided-lite wood, or historically accurate steel units; not every window company carries those lines or knows how to spec them properly. Our local reputation is built on showing up when we say, quoting a square deal, and standing behind the work in writing. Dispatch is coordinated from our Los Angeles office, with crews serving San Marino on schedule.
Our Window Installation Services in San Marino
Most San Marino homes were built between 1920 and 1960, and the original windows are frequently steel casement or multi-light wood sash. That means the standard replacement conversation does not apply here. Below are the services our San Marino customers call us for most often. You can also explore our full Window Installation services if you are not sure which style fits your home.
Casement Windows
Original steel casement windows are common throughout San Marino, particularly on Spanish Colonial Revival and Tudor estates. When the seals fail or the frames warp from inland UV, the fix is usually a custom steel replica or a premium aluminum-clad wood casement with matching sightlines. We measure the muntin profile exactly, order from manufacturers that can match narrow steel dimensions, and install with flashing tape and correctly torqued hardware so Santa Ana winds do not pull the sash out of alignment. A casement replacement in San Marino typically runs $1,600-$3,600 per unit, more if the project is on the second floor or requires custom bronze hardware.

Fixed & Picture Windows
Fixed and picture windows on San Marino estates are often the largest glass in the house – a two-story living room picture window or a bank of fixed transoms above French doors. The design review board treats these as architectural features, not just openings. We spec low-E insulated glass with argon fill to preserve the view while cutting the heat load from San Gabriel Valley sun, and we submit the sightline drawings that prove the replacement matches the original. Replacing a large fixed window here usually runs $2,200-$5,500 installed, depending on glass area and whether the frame needs full replacement or can be rebuilt.

Bay & Bow Windows
Bay and bow windows on older San Marino homes tend to be site-built wood assemblies that have settled over decades, with failed glazing seals and dry-rotted seat boards beneath the sash. A proper replacement means rebuilding the projecting frame, re-flashing the roof cap, and often matching custom millwork profiles the board can identify from the curb. We order the window unit from manufacturers that support custom bay and bow configurations rather than forcing a stock unit into an opening it was never meant to fill. Expect $4,000-$9,000 per bay or bow replacement in this market, with the wide range driven by seat board repair, millwork matching, and the board’s required submittal package.

Single & Double Hung Windows
Single and double hung windows appear on many traditional and Colonial-style homes south of Huntington Drive. In San Marino, the catch is that off-the-shelf vinyl double-hungs are routinely rejected in design review, so we quote wood or aluminum-clad wood units with true divided lites or simulated divided lites sized to match the original grille pattern. A standard double hung replacement runs $1,100-$2,400 per opening here; a historically matched wood unit with custom muntins can push toward $3,800. We quote both on paper so you can decide with the full picture.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Marino
We install and service more than a dozen manufacturer lines, and for San Marino we lean heavily on Andersen, Pella, and Marvin for wood and aluminum-clad wood, plus PGT and CGI when impact-rated glazing is part of the conversation. We compare manufacturer lines side by side on paper, with warranty durations stated, because the board wants to see that a window is not just period-correct but also built to last. Ply Gem and CWS orders are available as well when a project calls for a specific profile or lead time. We keep local parts and hardware on hand for the common failure points on older units: worn casement operators, failed glazing seals, and misaligned sashes.
Common Window Installation Problems We See in San Marino Homes
- Design review rejection on the first submittal. Homeowners lose 6-8 weeks when a permit application shows standard vinyl double-hung windows on a 1920s Tudor. The board flags it, and the project stalls. We submit material samples and elevation drawings on the first pass so that does not happen.
- Original steel casement windows with fogged or failed glazing. Decades of inland UV degrade the seals and warp the frames. The steel frames are often still structurally sound, but the glass units and weatherstripping need full replacement, not a sash swap.
- Santa Ana wind stress on hardware and thresholds. We see doors and casement sashes pulled out of alignment every autumn in San Marino, almost always on units where the hardware was never re-torqued after installation. Sustained wind loads expose loose hinges and weak weatherstripping quickly.
- Wrong muntin profile on a Spanish Colonial. It looks close from the street, but paint and caulk fail early under intense UV, and the board flags the mismatch on a follow-up inspection. Sightlines and muntin profiles are not interchangeable on these homes.
Pricing for Window Installation in San Marino, CA
San Marino window installation is priced differently from every neighboring city, and the reason is simple: design review, material requirements, and lead times. A standard window replacement that might run $800-$1,200 in Alhambra starts around $1,400 per opening here because the board will not clear vinyl units on most homes, and premium wood or aluminum-clad wood carries a different price. A casement replacement lands between $1,600 and $3,600. A fixed or picture window runs $2,200-$5,500. Bay and bow replacements run $4,000-$9,000. A full estate-scale project across ten to twenty openings typically lands between $45,000 and $120,000, with the exact number set by manufacturer line, custom millwork, and whether you need steel replicas or can use aluminum-clad wood. We give a free written estimate with line items for every opening, and we fix the price in writing before anything is ordered. Call (888) 635-0804 to schedule one.
We Also Serve Cities Near San Marino
TruePane serves San Marino and the surrounding communities across the San Gabriel Valley. If you are in San Marino proper, or in San Gabriel, Alhambra, Pasadena, or South Pasadena, our crews run the same schedule and the same standard. The window stock changes from street to street, but the approach does not.
Serving San Marino, CA - Our Local Coverage Area
We’re based in the San Marino area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Window Installation in San Marino
Yes. San Marino’s Architectural Design Review Board requires a permit and design review for window replacements even when the new unit matches the original profile. You need material samples and elevation drawings showing the replacement replicates the original grid pattern and sightlines. This is not a waiver you can skip. Call (888) 635-0804 and we will tell you exactly what your project needs in the submittal package.
Because the design review board will reject standard vinyl double-hung units on a Spanish Colonial. The city expects the replacement to match the original architectural character, which means historically accurate steel casement, divided-lite wood, or premium aluminum-clad wood units with the correct muntin profile and sightlines. Energy efficiency is not the issue; the issue is that the board treats windows as part of the house’s character, not as interchangeable parts. We spec energy-efficient units that still clear review.
Plan on an additional four to eight weeks compared to neighboring cities. The board’s submittal and review process adds two to six weeks before a permit is issued, and custom steel or historically matched wood units often carry manufacturer lead times of eight to fourteen weeks. Labor itself is usually two to four days on site. The calendar is driven by the board and the factory, not the installation crew.
Not typically required by code, but sustained Santa Ana events put real stress on window hardware, thresholds, and weatherstripping. If you are replacing windows anyway, we often quote PGT or CGI impact-rated units for openings that face the prevailing wind or that have failed before. Impact-rated glazing costs more upfront, but it eliminates the annual cycle of re-torquing hardware and replacing blown weatherstripping on vulnerable exposures.
Sometimes. On original steel casement frames that are still square and structurally sound, we can replace the insulated glass unit and rebuild the weatherstripping without replacing the entire frame. On frames that have warped from UV or lost their original torque, a full steel replica is usually the better fix. We will tell you which one you need after measuring, and the price is fixed in writing before we order anything.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving San Marino since 2008.



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