Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom Windows & Doors Across Claremont
Custom window and door work in Claremont means navigating two different sets of rules depending on which side of Baseline Road you live on. North of Baseline, the city’s building department will ask about fire-rated assemblies before they sign off on anything. South of Baseline, a 1920s Craftsman bungalow near the Claremont Colleges may need design-review approval before a replacement sash goes in. A contractor who does not know both conversations will cost you time and money. TruePane Windows & Doors knows both. We have been setting windows and hanging doors in this trade since 2008, across a dozen plus manufacturer lines, and our crew works on Claremont homes every week. Call (888) 635-0804 and you will get a live person, not a voicemail tree.
Why TruePane Windows & Doors Is Claremont’s Preferred Custom Windows & Doors Company
Claremont is not Pomona. It is not Upland. The housing stock near the Colleges is older, the fire-code rules north of Baseline are stricter, and the Santa Ana winds coming off Mt. Baldy hit harder here than in flat valley cities a few miles west. A company that treats Claremont like any other city will install a window that fails inspection or a door that binds by July. We work in Claremont regularly, and our technicians know the difference between a WUI-flagged parcel and a standard tract home on sight. Our background-checked, uniformed crews measure every opening twice and quote manufacturer lines side by side on paper, so you see exactly what you are buying before you sign anything.
Residents who have lived in their Claremont home for twenty or thirty years tend to ask hard questions. We respect that. We are not the cheapest bid in the room, and we will not pretend otherwise. What we offer is a straight answer, a written line-item quote, and a guarantee that stands behind the work. The Custom Windows & Doors team at TruePane carries The Keystone Standard on every job: both manufacturer warranty layers registered in writing, durations stated, before the truck leaves the driveway. And our Done Right Promise means if it is not done right, we make it right, with no paperwork fights and no arguing. Dale Kessler founded this company on a rule that is still on the whiteboard: if the pane is not true, the job is not done.
Our Custom Windows & Doors Services in Claremont
When a Claremont homeowner calls about a custom window or door, they usually have a specific problem in front of them. It might be a sagging sash on a 1930s double-hung near the Colleges, or a sliding patio door that has never closed right in a 1970s rancher off Foothill Boulevard. We handle the full range of custom work, but these are the services Claremont calls us for most.
Custom Shape Windows
Arch-top, radius, half-round, octagonal, eyebrow, full circle. Older Claremont homes, especially the Spanish Colonial Revivals, often have original shaped windows that big-box replacement companies will not touch. We order true custom-shape sashes matched to the existing opening, and we do it with the understanding that the city’s design-review board may need to see the profile and materials before approval. If you live north of Baseline in a WUI zone, we specify tempered glass and compliant framing for the shape as well. A shaped window is not a place to cut corners.

Commercial Storefront Glazing
Claremont Village has a mix of older commercial storefronts and newer buildouts, and a cracked or fogged storefront pane does not wait. We service and replace commercial storefront glazing throughout Claremont, including tempered, laminated, and insulated units. Lead times on commercial glass have swung wildly in the past five years, so we order from multiple fabricators and tell you the honest date, not the date that makes you feel good. If you run a shop or office in the Village, you need glass that is safe, code-compliant, and installed without tearing up your storefront for a week.

Curtain Wall Systems
Curtain walls are engineered glass façades, not window replacements. In Claremont, you see them on newer commercial and institutional buildings, including several around the Claremont Colleges campus edge. These systems fail at the gaskets, at the corner mullions, and at the transition to the roof. We inspect, repair, and replace curtain wall glazing for Claremont properties, working from the original structural drawings whenever they still exist and field-measuring when they do not. A curtain wall job is not a one-crew, one-day job, and any contractor who says it is should make you nervous.

Architectural Grilles & SDLs
This is the service Claremont historic-home owners ask about most. The design-review process near the Colleges will often require that replacement windows carry the same divided-light look as the originals. That means simulated divided lites, or SDLs, and architectural grilles that match the original pattern, bar width, and profile. We have walked more than a few Claremont homeowners through the submittal process, quoting a Milgard Tuscany or PGT window with the correct SDL pattern on paper next to a modern-profile option, so the design board can see the difference. If your home in Claremont is 1920s or 1930s, this is very likely your situation.

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 Claremont
TruePane is an authorized installer for more than a dozen manufacturer lines, including, and PGT. For Claremont customers we also quote Ply Gem, CGI, and CWS where they fit the job, because a WUI fire-zone requirement can narrow your options quickly and you should see side-by-side prices. When we service or replace a window or door in Claremont, we register both manufacturer warranty layers in writing before the truck leaves the driveway, and we carry the parts that fail most often on the truck so we are not driving back and forth across the 10 freeway. If you have a fogged PGT unit in a north Claremont tract home or a failed Milgard sash in a Village bungalow, we can usually handle it in a single visit.
Common Custom Windows & Doors Problems We See in Claremont Homes
- Seal failure in original insulated glass units. Claremont’s inland heat routinely exceeds 105°F in summer, and older aluminum or wood sashes hide a failed seal until the fog finally shows up. By then the argon is long gone and the unit is doing very little to keep heat out.
- Santa Ana wind damage to door and window anchoring. Gusts off Mt. Baldy regularly top 60 to 70 mph in Claremont. A new door anchored by someone who does not know these winds will have the jamb pulled loose within a season. We anchor for this specific wind load.
- Design-review rejection on replacement sashes near the Colleges. A modern-profile window that would pass in Ontario gets bounced by Claremont’s design-review board for a 1928 Craftsman. The fix is architectural grilles or SDLs that match the original divided-light pattern, and it is cheaper to spec that correctly the first time than to reorder.
- Incorrect glass for WUI zones north of Baseline. A custom window installed without WUI-rated tempered glass on a north-of-Baseline parcel will fail final inspection and must be torn out. We see this happen to homeowners who bought from an out-of-area company that never pulled the WUI verification from the city.
Pricing for Custom Windows & Doors in Claremont, CA
Here are the honest ranges we see in Claremont, not a national average. A standard custom-shape window replacement with a radius top runs $850 to $1,900 per unit, depending on size. Architectural grilles or SDLs add $150 to $450 per window. Oversized glass panels, like a picture window or a large fixed panel on a patio door, run $1,200 to $4,000 installed. Fogged-glass replacement on an existing sash runs $250 to $700 per unit. For north-of-Baseline WUI jobs, fire-rated tempered glass and non-combustible frames generally add 15 to 30 percent to the materials. Curtain wall repair starts near $1,500 and goes up with engineering involvement. Every one of our Claremont estimates is free and written line by line, so you see the number before you commit. Call (888) 635-0804 to schedule yours.
We Also Serve Cities Near Claremont
While this page is written for Claremont, our crews work throughout the eastern Los Angeles County and Inland Empire foothill cities. You will find TruePane trucks in Montclair, La Verne, Upland, and Ontario regularly. If you live in one of those cities and need an honest custom window or door estimate, call the same number: (888) 635-0804.
Serving Claremont, CA - Our Local Coverage Area
We’re based in the Claremont 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 - Custom Windows & Doors in Claremont
Only if your parcel sits north of Baseline Road, inside a state-designated Wildland-Urban Interface fire hazard zone. Claremont’s building department routinely flags window and door permit applications for WUI verification on those parcels. That means tempered glass, non-combustible frames, and rated thresholds. Not every north Claremont street is flagged, but many are. Call us with your address and we will tell you what the permit desk is going to ask before you spend a dollar: (888) 635-0804.
Not usually, but the profile and materials matter. Claremont’s design-review standards for historic character near the Claremont Colleges restrict which replacement window profiles and materials are approvable on 1920s through 1940s Craftsman and Spanish Colonial homes. If you keep the same glass area but switch from a true divided-light wood window to a modern vinyl profile with no grilles, the city can reject it. Architectural grilles or SDLs matching the original pattern usually resolve it. We can prepare the submittal package with you.
Because it was not anchored for the wind load Claremont actually gets. Gusts off Mt. Baldy routinely exceed 60 mph here, and they hit doors on the north and east exposures hardest. A door that is plumb and square on a calm day can have its jamb pulled loose by repeated Santa Ana cycling if the anchors are undersized or the rough opening was never shimmed correctly. We see this exact failure every season. The fix is a re-anchored frame with proper shimming, and we do not have to replace the door in most cases. Call for an inspection: (888) 635-0804.
In many cases you can replace the insulated glass unit alone and keep the existing sash and frame. That is the norm on wood-frame Claremont homes where the sash is still sound. If the sash itself is rotten, warped, or the seals have failed on multiple panes, a full sash replacement makes more sense. For homes near the Colleges, selling that repair past design review is easier when you keep the original frame. We will tell you which path makes sense after one look at the window.
Inspection first, then an allowance written into the contract. When our crew replaced original 1920s wood-frame double-hung windows on a Craftsman bungalow near the Claremont Colleges, we pulled back the trim to find failed flashing tape and undersized jambs. That is the nature of working on almost hundred year old houses. So we write an allowance into the contract for likely reframing or waterproofing work, and any surprise is priced and approved in writing before we touch it. You never get a change order you did not sign. That is how Done Right works in Claremont.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Claremont and the eastern Los Angeles County foothill communities.



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