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Get your free estimateFast, Reliable Window Installation Across San Marino
Window installation in San Marino usually means one of two things: a careful retrofit that preserves a historic home’s original steel casements, or a full replacement on a newer addition where energy performance and clean sightlines matter most. Most projects in this city run between $900 and $3,400 per opening depending on the window type, the millwork involved, and what the Design Review Board requires. We coordinate both sides of that equation from the first measurement to the final inspection. Call (626) 628-2308 and we’ll give you a written price before anything gets ordered.

Why Lightwell Windows Pasadena Is San Marino’s Preferred Window Installation Company
San Marino homeowners call us because we show up already knowing what their house is going to ask of us. We know that a 1930s English Revival on Lombardy Road has different window requirements than a 1950s ranch near Lacy Park, and we plan the job accordingly. Our crews have worked on homes along Huntington Drive, Saint Albans Road, and Winston Avenue, so we’re familiar with the setback rules, the historic overlay requirements, and the way an afternoon Santa Ana can shift how a west-facing room behaves. Keith Yamada, who leads our team, reads every Design Review Board submittal before it goes in, because the fastest way to delay a San Marino window job is to send the city incomplete drawings.
Every visit starts the same way. Shoe covers go on at the door. Drop cloths go down before the old sash comes out. We ask before moving a planter or a piece of furniture. The C.A.R.E. values our technicians follow aren’t a poster in the office. They’re how we keep dust off your floors, keep your dog from bolting through an open wall, and keep your kid’s nap schedule intact. And if a question comes up at 9 p.m. about a draft you noticed, a live person answers the phone.
Styles & brands we work with









Window Contractor in San Marino
A window contractor in San Marino does more than swap glass. On the older homes here, the contractor is often the go-between for the homeowner, the architect, and the city’s Design Review Board. The job starts with documenting what exists: sash profiles, muntin bar patterns, the original steel frames, any lead paint present. Then we price the work in writing, before anything gets fabricated. Most window replacements in San Marino run $1,100 to $2,800 per opening for standard openings. Architectural lines with custom millwork or oversized insulated glass units can reach $3,500 to $6,500 per opening.
Historic preservation coordination
When the city requires the original steel windows to stay, we don’t argue with the ordinance. We work around it. The standard move is a custom interior storm window sized to the exact reveal of the existing steel frame, so the exterior sightlines never change. From the street, the house looks untouched. From inside, you get dual-pane comfort, a quieter room, and glass that doesn’t bake the west wall in August.
Architect and designer coordination
On new additions and full replacements, we work directly with your architect or designer on shop drawings, design pressure calculations, and hardware finishes before the long-lead glass order gets placed. That’s the part that actually sets the calendar. Lead times on custom glass, not labor, are what push a San Marino window job from four weeks to fourteen. We fix the price in writing before ordering, so a supplier’s delay doesn’t become an invoice surprise.
Window Installers in San Marino
Window installers in San Marino need to understand the difference between a 1920s steel casement and a 1980s wood double-hung, because the installation method is completely different. Our installers are trained on both, plus everything in between. Most installation labor in San Marino runs $250 to $600 per opening, separate from the window cost itself. Retrofit storm installations tend toward the lower end. Full tear-outs on double-hung and casement units, where we’re pulling the exterior trim and matching stucco or wood siding, land at the higher end.
Retrofit storm window installation
This is the workaround San Marino homeowners ask about most often. The original steel casement stays in place. We mount a custom interior storm sash inside the existing reveal, using bronze or clear anodized aluminum that reads as a deliberate architectural line, not a bolt-on. Laminated glass handles sound reduction and safety. Low-E coatings manage solar gain. The city gets what it wants: zero change to the historic facade.
Full replacement on newer construction
On homes outside the historic overlay, or on additions where there’s no original fabric to preserve, we do full replacements with new construction or replacement flanges. We pull the old window carefully enough to reuse the interior trim when it’s salvageable, and we match extension jambs to the actual wall depth. A 2×6 wall framed in the 1950s needs a different jamb than a modern 2×4 wall, and we measure for it, not guess at it.

Trusted Brands We Service in San Marino
We carry a curated lineup so the recommendation fits the house, not a vendor’s preference. For San Marino’s older homes, Window Installation work often calls for the slim sightlines of ES Windows or the storm-rated strength of PGT when the south elevation faces full afternoon sun. ViewLux works well on newer additions where you want a clean modern line at a sensible price. We keep local stock of the replacement parts these brands need most, so a broken operator or a failed seal on a PGT or ES unit doesn’t mean waiting six weeks for a backordered component.
Common Window Installation Problems We See in San Marino Homes
- City rejection due to altered sash profiles. A contractor orders standard double-hung replacement sashes that don’t match the original 1920s muntin profiles, and the Design Review Board rejects the work. We document the original profiles before ordering anything, then match them.
- West-facing rooms turning into solar ovens. An installer uses low-E glass with too high a solar heat gain coefficient on a west-facing window, and the room becomes unbearable during Santa Ana heat events. We spec glass by orientation, not by default.
- Schedule slips from late design review submittals. The shop neglects to submit mockups of new casement hardware to the board before the long-lead glass order is placed. We submit hardware samples and shop drawings at the same time the glass goes on order.
- Lead paint complications on original steel windows. Many original steel windows in San Marino have lead-based paint, and sanding them without containment is a health problem and a code violation. We handle them with HEPA-containment and wet-wipe methods, and we never hand a homeowner a lead hazard wrapped in a new window quote.
See the difference
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AfterPricing for Window Installation in San Marino, CA
Here are honest ranges for San Marino’s market, not national averages. A standard vinyl or wood double-hung replacement runs $900 to $1,800 per opening installed. A custom interior storm window for a retained steel casement runs $700 to $1,500 per unit. A full casement replacement with matching millwork runs $1,800 to $3,400 per opening. Architectural lines like ES Windows for a new addition run $2,500 to $6,500 per opening with custom sizing and design pressure engineering. What changes the number: glass package, jamb depth, trim matching, and whether the city requires drawings. We put the price in writing before anything is ordered, and it does not change unless you change the scope. Call (626) 628-2308 for an exact quote. Estimates are free.
We Also Serve Cities Near San Marino
Our crews work throughout the San Gabriel Valley. We serve San Marino plus Pasadena, Temple City, Arcadia, and El Monte, with the same written-price policy and the same shoe-covers-on-the-floor rule on every job.
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 About Window Installation in San Marino
Generally no, not on pre-1950 landmark homes. The Design Review Board generally mandates that original steel casement windows be retained. The accepted workaround is a custom interior storm window with laminated or low-E glass, which gives you the energy and sound performance of modern glazing without changing what the city sees from the street. We handle the submittal process, the mockups, and the installation. Call (626) 628-2308 and we’ll walk you through what your specific home is likely to require.
We template the existing arch radius and the jamb depth, then order the Therma-Tru door with custom jamb extensions to match. The millwork gets matched in species and profile so the new door sits in the opening the way the original did. We take the measurements, we order the door, and we confirm the details in writing before it ships. This is exactly the kind of coordination we do when replacing the front entry on a 1930s Tudor. Call (626) 628-2308 for a free measurement.
Interior storm windows are generally treated as interior alterations, which often do not require a design review submittal because the exterior facade is unchanged. That said, every home is different, and we confirm the requirement with the city before starting. If a permit is needed, we pull it and schedule the inspection. Call (626) 628-2308 and we’ll check your specific address.
Laminated glass with a low-E interlayer handles three problems at once: it holds the glass together if impacted, it cuts sound transmission, and it reduces solar gain on west and south elevations. For San Marino’s Santa Ana conditions, we typically spec a laminated low-E unit with a solar heat gain coefficient tuned to the room’s orientation. The lead paint on the original steel stays undisturbed behind the storm sash. Call (626) 628-2308 to discuss your windows specifically.
We have an engineer stamp the shop drawings before ordering the insulated glass units. The design pressure on the south and east elevations is usually the controlling spec in San Marino, and we calculate it per opening rather than using a blanket number. On a recent 1930s Tudor on Winston Avenue, the south elevation drove the entire glass order. That’s the kind of detail that keeps a new window wall from bowing in a 60-mile-per-hour gust. Call (626) 628-2308 and we’ll review your plans.
Get a Written Price Before You Order Anything
If you’re weighing window installation in San Marino, start with a measurement and a written quote. We’ll come out, document what you have, listen to what you actually want, and put a number on paper that covers the glass, the labor, the permit, and the cleanup. No deposit games. No invoice surprises. Keith Yamada and the whole Lightwell Windows Pasadena team are behind it. Call (626) 628-2308 to schedule your free estimate. A light well is what brings daylight deep into a building. That’s what a well-installed window should do for your home in San Marino.
Written by Keith Yamada, Owner at Lightwell Windows Pasadena, serving San Marino and the San Gabriel Valley.
Six Reasons Homeowners Choose Lightwell Windows Pasadena
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.