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Custom window and door work in Kentfield runs $1,800-$6,400 per opening depending on whether you need historically matched wood, fire-rated glazing for hillside exposure, or a full tear-out with framing repair. Most projects take 4-8 weeks from measure to install, with design review adding 3-6 weeks when Marin County sign-off applies. If you’re in the 94914 ZIP and planning to replace original 1920s-1960s windows or doors on a home the County wants preserved, we know what that process looks like before the first strip of casing comes off. Call (888) 635-0804 and we’ll walk you through it.
Why TruePane Windows & Doors Is Kentfield’s Preferred Custom Windows & Doors Company
We’ve worked the wooded streets off Sir Francis Drake Boulevard enough times to know that a Kentfield rot problem rarely stops at the sill. Redwood duff and oak leaf litter pack against sill pans on the upslope side of a house, hold moisture through the dry season, and wick rot up into the king studs while the visible sash still looks sound. Our Custom Windows & Doors team opens walls expecting that. We rebuild jambs, sister studs, and flash pans properly so the new unit isn’t sitting in a frame that’s already failing behind it.
Our crews work Kentfield jobs with a level of detail the County design-review process demands. Background-checked, uniformed technicians measure every opening twice and quote manufacturer lines side by side on paper, with both warranty layers registered in writing before the truck leaves the driveway. That’s Dale Kessler’s founding rule: if the pane is not true, the job is not done. It isn’t a slogan. It’s how we bid.
Homeowners here tend to have lived in their houses twenty or thirty years. They’re not looking for the low bid. They’re looking for a shop that will still answer the phone in ten years. We’ve been doing that since 2008 as a company rooted in the Bay Area, and we hire local people who plan to be here just as long. A live person answers our phone 24/7. Not a menu. Not a call center.
Our Custom Windows & Doors Services in Kentfield
Architectural Grilles & SDLs
Kentfield’s Craftsman and Tudor-era homes almost never take a stock grille pattern. Marin County design review often requires simulated divided lites (SDLs) with specific bar widths and profiles that match the original joinery, especially on street-facing elevations. We build SDLs to spec, muntin-by-muntin, in wood or clad-wood units. If the original had a 7/8-inch flat bar with a putty profile, that’s what the new sash gets. A fusion-welded vinyl frame with an applied grid will bounce back from the County and add a month to your permit.
Oversized Glass Panels
Many Kentfield properties have view corridors across the Ross Valley, and the estates built in the 1950s and ’60s often framed those views with fixed wood picture windows that are now thermally obsolete. We source oversized insulated glass units up to the structural limits of the frame, in low-E/argon configurations that drop U-factor meaningfully without changing sightlines. Craning a 10-foot panel up a Crown Road switchback is different from a flat-lot delivery in Corte Madera. We price the logistics honestly and bring the right crew for the terrain.
Custom Shape Windows
Gable-end rounds, eyebrow windows, and arched casements show up all over Kentfield’s prewar housing stock. These aren’t catalog units. We take field templates, build the frame to match the original radius, and order glazing cut to the template, not the other way around. When the County wants historically sympathetic profiles, a custom shape window is often the difference between approval and another round of drawings.
Commercial Storefront Glazing
For mixed-use and small commercial frontage off College Avenue and the surrounding Kentfield storefronts, we handle storefront glazing, entry systems, and code-compliant tempered glass. Commercial jobs in unincorporated Marin run through the same design-review lens as residential work. We prepare submittals that answer the County’s questions the first time.
What happens when you call
- 1
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 Kentfield
We’re an authorized installer for more than a dozen manufacturer lines, and we quote side by side on paper so you can see exactly what each price buys. For Kentfield homes with design-review constraints, we lean on manufacturers like ES Windows and CWS when a specific wood species or clad profile is required. If you have existing units from CGI or ECO Window Systems and need service or replacement parts, we can source them. We don’t push one brand. We push the one that fits your frame and passes the County.
Common Custom Windows & Doors Problems We See in Kentfield Homes
- Rot wicked into king studs from redwood duff. Leaf litter and duff pile against sill pans on the upslope side of Kentfield homes, hold moisture for months, and rot travels up before you ever see a soft sill from inside. By the time a sash sticks, the framing is already compromised.
- Fogged seals on original double-hungs. Kentfield sits in a wooded Ross Valley pocket that collects heavy morning condensation off the tree canopy. Wood sashes with failed glazing putty pull moisture into the insulated glass unit and fog every morning, even in summer.
- Design-review rejections on replacement windows. Unincorporated Kentfield answers to Marin County, not a city building department. Stock vinyl replacements routinely get bounced because the profile doesn’t match the original true-divided or SDL look. We build to the County spec the first time.
- Fire-code gaps on hillside glazing. Homes in the Very High Fire Hazard Severity Zone, which covers much of Kentfield’s upslope terrain, need fire-rated glazing or specific assemblies that standard tempered units don’t satisfy. Contractors who miss this leave homeowners with unapproved glass and a costly redo.
Pricing for Custom Windows & Doors in Kentfield, CA
Here’s what we see on Kentfield jobs, in real numbers. A standard wood or clad-wood custom double-hung with SDLs runs $1,800-$3,200 per unit installed, including interior trim and exterior casing matching. Custom shaped windows, eyebrows, and rounds start at $2,600 and go up with radius complexity and wood species. Oversized fixed picture windows with low-E/argon glazing typically land $3,500-$6,400 per panel, depending on access and whether you need a crane. A full five-window replacement on a 1940s Craftsman usually budgets $12,000-$22,000 with design review, framing repair, and finish work included. Architectural grille packages add $300-$700 per opening over a plain sash. The Done Right Promise covers workmanship on every job, and both manufacturer warranty layers are registered in writing before we leave. Call (888) 635-0804 for a free estimate and a line-item quote you can take to the County.
We Also Serve Cities Near Kentfield
TruePane crews work throughout central Marin. If you’re across the border in Larkspur, San Anselmo, San Rafael, or Corte Madera, we run the same custom window and door service with the same written pricing and the same Done Right Promise. Dispatch is coordinated from our San Francisco Bay Area office, and our crews serve Kentfield and the surrounding Ross Valley towns daily. Call (888) 635-0804 to schedule.
Serving Kentfield, CA - Our Local Coverage Area
We’re based in the Kentfield 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 Kentfield
Marin County’s design review generally accepts simulated divided lites (SDLs) on most Kentfield homes, provided the bar width, profile, and spacer configuration match the original window’s divided lite pattern. True divided lites are rarely required except on historically designated properties, but SDLs with an applied exterior grid and internal spacer will not pass. The County reviews what it sees from the street. Call (888) 635-0804 and we’ll confirm what your elevation actually needs before you order.
Your Kentfield double-hungs are fogging because the Ross Valley floor collects heavy overnight condensation off the dense redwood and oak canopy, and the failed glazing putty on original 1920s-1960s sashes lets that moisture seep between the panes. The fog is inside the insulated glass unit, not on the room side. It can’t be wiped off. The fix is reglazing with a new sealed unit and rebuilding the wood stops and putty profile to match.
Yes, in most Kentfield cases. Replacing an existing window in the same rough opening does not trigger grading plan review, even on a steep hillside lot. What it triggers is design review if the replacement changes the visible profile or lite pattern from the original. A 1960s casement swapped to a double-hung changes the opening’s vertical emphasis, and the County will want to see that before you order. We handle the submittal.
For a detached ADU in Kentfield’s Very High Fire Hazard Severity Zone, exterior glazing typically needs to meet California’s Chapter 7A fire standards, which means tempered or dual-pane glass with specific framing assemblies, or fire-rated glazing in the window and any glazed door facing the hazard side. Standard annealed glass will not pass. We specify and install code-compliant packages and pull the fire review as part of the permit.
A custom arched or angled gable window on a Kentfield Craftsman typically runs $2,800-$4,600 installed, depending on radius, wood species, and whether we’re matching existing SDL bars. The County fee doesn’t change based on window shape, but the plan-check time does if the reviewer wants additional elevations. A simple round-top with the same profile as the original usually clears on the first submittal. Call (888) 635-0804 for an exact quote, and we’ll include the design-review paperwork.
Contact TruePane Windows & Doors in Kentfield
Planning a custom window or door project on a Kentfield property with real history? We’ll walk the project with you, measure twice, quote line by line, and register both warranty layers in writing before we start. If the pane is not true, the job is not done. That’s the Keystone Standard, backed by the Done Right Promise on every job. Call (888) 635-0804 to schedule your free estimate. A live person answers, day or night.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Kentfield and Marin County since 2008.