Double hung
Horizontal roller
Casement
Bay & bow
Sliding glass doors
Entry doors
Impact garage doors
PGT
CGIFree in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Get your free estimateFast, Reliable Window Replacement Across San Marino
Window replacement in San Marino comes with a particular set of rules, and we know them cold. Most full-frame replacements on the city’s older homes run between $1,400 and $3,200 per opening, while insert replacements start closer to $900. The real variable isn’t labor, it’s whether your home falls under Design Review Board oversight and what the original window profile demands. We coordinate with the Board, with your architect if you have one, and with the manufacturer so the lead time and the approval happen in parallel, not one after the other. Call (626) 628-2308 and we’ll walk you through what your specific street and style actually require.

Why Lightwell Windows Pasadena Is San Marino’s Preferred Window Replacement Company
Our window replacement company has spent years working inside San Marino’s specific constraints: historic profiles, strict preservation review, and homeowners who expect the finished job to look like it was always there. The Window Replacement team carries eight manufacturer brands, including CGI, CWS, and ES Windows, so the recommendation follows the house, not the other way around. When a 1920s Spanish Colonial on Lombardy Road needs steel casement work, we’re not improvising. The crew arrives in uniform, background-checked, with drop cloths and shoe covers on before the first sash comes out, and a written price in hand before anything gets ordered.
Keith Yamada leads the work locally. He’s the one who answers when a San Marino homeowner calls with a question about the Board’s latest requirement or a concern about dust containment on a lead-paint job. The phone is answered by a live person, 24/7, because the questions don’t always come during business hours. When a family on Winston Avenue needs to know whether the interior storm window route will satisfy the city, they get Keith or someone on his crew, not a call center script.
The 365-Day Done Right Promise covers every job we do in San Marino. If the finished work isn’t right, we make it right. No debate, no countdown, no fine print about which window qualified. That promise is stamped on the small insert jobs and the full custom replacements alike.
Styles & brands we work with









Window Repair in San Marino
Window Repair in San Marino rarely means swapping a pane and calling it done. On the homes we see, it means stabilizing original steel casements that have single glazing and lead-based paint, replacing failed weatherstripping without disturbing the painted surface, and often retrofitting custom interior storm windows that preserve the historic fabric while bringing the thermal performance up to something a dual-pane low-E unit would deliver. A typical repair visit in San Marino runs $250 to $600 per window depending on what’s failed and whether containment is required.
Steel Casement Stabilization
Original steel windows from the 1930s and 1940s get stiff, rust at the hardware, and lose their seal. We recondition the operators, reset the frame, and replace gaskets with modern materials that match the original sightlines. When lead paint is present, we follow San Marino’s containment protocol rather than sanding or scraping in place.
Custom Interior Storm Windows
When full replacement would alter the profile the Design Review Board approved, we fabricate interior storm units that seal against the existing frame. Low-E glass cuts solar gain in San Marino’s hot, dry summers, and the original steel stays untouched behind it. The lead hazard stays sealed. The Board gets what it wants. This is the workaround that actually gets approved.
Window Replacement Company in San Marino
A Window Replacement Company in San Marino has to know which homes get full frame replacement and which ones go the interior storm window route, and that call often belongs to the city’s Design Review Board as much as to the homeowner. We’re comfortable in both lanes. Full frame replacement in San Marino typically runs $1,400 to $3,200 per opening including the custom profiles and millwork matching that the Board requires. Insert replacement, where the existing frame stays, runs $900 to $1,800 per opening when the opening is standard enough to accept it.
Full Frame Replacement on Historic Styles
When the original window is too far gone or when an addition is being built new, we replace the entire unit. That means matching the sightline, the mullion pattern, the exterior trim profile. We order from manufacturers who do custom millwork, not just stock double-hungs, because a Tudor window on Virginia Road doesn’t come off the shelf.
Insert Replacement for Post-War Homes
Some San Marino homes from the 1950s have simpler aluminum or wood sash windows that accept a quality insert. We measure, order, and install inserts sized to the existing opening, which keeps the cost down and the construction mess minimal. Every install includes shoe covers, drop cloths, and a photo of the clean-up before the crew leaves.

Trusted Brands We Service in San Marino
We stock and install from a curated set of manufacturers rather than pushing one vendor’s catalog. For San Marino homeowners, that means CGI’s impact-rated glazing when it makes sense, CWS for custom architectural profiles, and ES Windows for the interior storm window packages that the Design Review Board prefers on landmark properties. Because crews serving San Marino are dispatched from our Los Angeles-area coordination office, we’re able to route parts and product locally with shorter turnaround than an out-of-state seller would offer. The warranty on every brand we carry is honored through our office, not a third party.
Common Window Replacement Problems We See in San Marino Homes
- Design Review Board rejections of off-the-shelf replacements. A contractor orders stock double-hungs, and the Board denies them because the mullion profile and casing don’t match the original steel casement. We order to the profile the Board approved, in writing, before the purchase order goes out.
- Lead-paint dust from careless weatherstripping work. Some installers apply new seals over lead-based paint without containment, and that dust becomes a contamination problem for the whole house. Our crew contains, wipes, and photographs the clean-up, and uses pet-safe products wherever there’s a choice.
- Wasted money on glazing the Board won’t approve. A homeowner buys impact-rated windows assuming more protection is automatically better. San Marino’s Board often prefers the interior storm window approach instead. We find out what the Board will accept before any money is spent.
- Solar gain and dust intrusion from single-pane originals. San Marino’s summers are hot and dry, and Santa Ana winds push dust through old single-glazed steel frames. Dual-pane low-E glazing, or the storm-window retrofit, cuts both problems without changing the home’s curb profile.
See the difference
Before
After
Before
After
Before
AfterPricing for Window Replacement in San Marino, CA
For a standard insert replacement in San Marino, expect $900 to $1,800 per window including the unit, labor, sealing, and clean-up. Full frame replacement on a home with custom profiles and Design Review Board requirements runs $1,400 to $3,200 per opening. Window repair calls in San Marino generally land between $250 and $600 per window depending on the failure and whether lead-paint containment is required. What moves the number on this tier is the millwork: replicating a 1930s steel casement profile costs more than ordering a stock vinyl unit, and the lead time on custom architectural glass is what sets the calendar, not the labor in your living room. The written price you get before we order anything is the price, period. Call (626) 628-2308 for a free estimate on your specific windows.
We recently retrofitted a 1930s English Revival on Sherwood Road with custom interior storm windows from ES Windows, pairing laminated glass interlayer with low-E glass to cut solar gain without touching the original steel casements. Our crew coordinated with the homeowner’s architect to match the existing sightlines, and the lead-paint hazard on the primary windows stayed sealed behind the new interior units. That’s the kind of job where the Board approval, the manufacturer lead time, and the install have to line up on the same calendar, and they did.
We Also Serve Cities Near San Marino
Our crews regularly work in Pasadena, Temple City, Arcadia, and El Monte alongside our San Marino projects. If your home sits just outside the city line, the same C.A.R.E. standards, written pricing, and brand selection apply. Call us and we’ll let you know what your city requires.
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 Replacement in San Marino
Sometimes, but not on every property. The Board’s default on original steel casement windows is often to require custom interior storm windows rather than full replacement, because the original frames carry lead-based paint and historic significance. We pull the Board’s requirements for your specific address before recommending a path, so you’re not buying a set of windows that gets denied. Call (626) 628-2308 and we’ll check what applies to your street.
We contain it. We don’t sand or scrape lead paint in place. The interior storm window retrofit seals the original painted surface behind a new interior unit, which keeps the lead undisturbed and out of reach. Where spot work is required, our crew follows containment protocols and cleans with HEPA filtering. We’ll show you the photo of the clean-up before we leave.
Lead times. On custom profiles, architectural glass, and interior storm windows built to spec, the manufacturer’s production schedule is what sets the calendar. Installation of a full house of windows takes days; waiting for the windows to be made takes weeks to months. That’s why we put the order in writing early, coordinate the Board approval in parallel, and keep you updated on the factory status. Call (626) 628-2308 to get a realistic timeline for your project.
Close enough that most people can’t tell from the curb, and the Board approves it when it’s done as an interior storm unit or a custom full-frame replacement that matches the original sightlines. The low-E coating is nearly invisible. The glass profile and mullion spacing are what the eye reads as “original,” and we match those to your existing windows. The energy savings and comfort difference in San Marino’s hot summers is significant.
For most San Marino homes, impact-rated glazing is overkill. San Marino isn’t in a hurricane zone, and the Design Review Board often prefers the interior storm window route over heavy impact glass that changes the window’s appearance. There are situations where impact-rated glazing makes sense, particularly on large unprotected glass facing the Santa Ana wind direction, but we’ll only recommend it when the Board will let it through and the physics justify it. Call (626) 628-2308 for straight answer about your home.
Schedule Your Window Replacement Estimate in San Marino
We’ll send Keith or one of his team members to your San Marino home, look at the existing windows, check what the Design Review Board governs for your property, and hand you a written line-item price before anyone touches a screwdriver. The estimate is free, and the phone is answered by a live person at (626) 628-2308. Tell us what street you’re on. We likely know the style of house and the windows in it before we arrive.
Written by Keith Yamada, Owner at Lightwell Windows Pasadena, serving San Marino and the surrounding area.
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.