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Windows & Doors Services in Kensington, CA
Kensington homeowners deal with a combination that most East Bay contractors don’t fully understand: steep hillside lots, persistent marine fog, and a housing stock of 1920s to 1940s Craftsman and Period Revival homes that won’t accept a standard vinyl window without looking wrong. We work in Kensington regularly, know the county permitting process for this unincorporated community, and answer the phone with a live person every time you call (888) 635-0804. Whether you’re chasing a fog-rotted sash on a Tudor on Coventry Road or need a full replacement on a bungalow near Colusa Circle, TruePane handles the whole job from first measurement to final county inspection.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Why Kensington Homeowners Choose TruePane Windows & Doors
The homes along the Kensington ridge aren’t interchangeable, and neither is the work we do on them. Dale Kessler founded TruePane on a simple rule that still governs every install: if the pane is not true, the job is not done. That’s not a slogan. It’s the difference between a window that seats tight against marine-layer moisture and one that fogs the first winter. Kensington residents in the Arlington and Berkeley Park neighborhoods regularly mention two things when they call us back: the crew showed up on time in uniform, and the warranty paperwork was actually registered before the truck pulled away. Both layers. In writing.
We’re background-checked, we measure twice before we order anything, and we put manufacturer quotes side by side on paper so you see exactly what you’re paying for. A live person answers 24 hours a day, 7 days a week. Not a call center. Not a callback form. Someone who knows Kensington’s housing stock and can talk through what you’re seeing.
Windows & Doors Services We Offer in Kensington
Window Installation
New windows for new openings, additions, or full remodels. Kensington’s older framing rarely sits square, so we shim, level, and true every opening before setting the unit. The result is a window that operates smoothly and seals completely, even on a hillside wall taking lateral wind load from the bay.
Learn more about our Window Installation in Kensington.

Door Installation
Entry doors, interior doors, and patio doors installed to open and close cleanly through Kensington’s seasonal humidity swings. A door that binds in July on a hillside home usually wasn’t hung true. We hang it right the first time.
Learn more about our Door Installation in Kensington.

Window Replacement
Replacing original 1920s-1950s wood windows without wrecking the architectural character of your home. We source wood-clad and custom divided-light units that match the original sash profiles on Craftsman bungalows and Spanish Colonial Revivals throughout Kensington.
Learn more about our Window Replacement in Kensington.

Impact Windows & Doors
Given that Kensington sits within a CAL FIRE Very High Fire Hazard Severity Zone, fire-resistant glazing and frame materials aren’t optional extras; they’re code. We install Impact Windows & Doors in Kensington with WUI-compliant fire-rated units that satisfy Contra Costa County requirements while still looking like they belong on a 1930s home.
Learn more about our impact windows and doors in Kensington.

Energy-Efficient Windows
Marine fog keeps Kensington cool and damp year-round, which means Energy-Efficient Windows in Kensington with low-e coatings and gas fills do more than save energy; they reduce condensation that feeds wood rot. We help you pick glass packages that match how your specific house sits on its lot, because a south-facing exposure on Arlington Avenue behaves differently than a shaded north slope off Amherst Drive.
Learn more about our energy-efficient windows in Kensington.

Sliding & Patio Doors
Replace a stiff aluminum slider from the 1970s or add Sliding & Patio Doors in Kensington to a hillside deck. Kensington’s wind exposure means track alignment and frame anchoring matter more than on flatland El Cerrito lots. We set doors to open with one hand and stay put in a gust.
Learn more about our sliding and patio doors in Kensington.

Glass Railing Systems
For hillside decks and stair runs where you want the view, Glass Railing Systems in Kensington replace bulky wooden rails. Tempered glass panels with stainless or aluminum hardware, engineered for Kensington’s wind loads and county building code.
Learn more about our glass railing systems in Kensington.

Custom Windows & Doors
Odd shapes, unusual divided-light patterns, oversized openings, arch-tops; if a standard catalog unit won’t do, we order custom. Kensington’s Period Revival homes often need exactly this, and we have more than a dozen manufacturer lines to draw from, including CWS, ES Windows, and ECO Window Systems.
Learn more about our custom windows and doors in Kensington.

Neighborhoods We Serve in Kensington
We work throughout Kensington, from the ridge-top homes near Tilden Regional Park down to the flanks above El Cerrito and Berkeley. You’ll find our trucks regularly on Coventry Road, Amherst Drive, and around Colusa Circle. Typical response time for a bid request anywhere in Kensington is same-day or next-day contact.
- Arlington
- Berkeley Park
- Kensington Park
- Colusa Circle area
Why Kensington’s Climate & Housing Affect Windows & Doors
Kensington sits squarely in the marine fog belt that pushes inland from San Francisco Bay. Overnight and morning moisture hangs on the ridge, and we see what that does to original fir and redwood window frames: rot starts at the bottom corners and the sill ends, then spreads into the rough opening. Steel and aluminum hardware oxidizes faster here than in lower-elevation East Bay flatlands, which is why many Kensington homeowners call us out for replacement hardware before the sash itself fails.
The housing stock compounds the challenge. Most Kensington homes were built between roughly 1920 and 1955, and they weren’t built with modern weathering details. Original double-hung and casement windows with small divided lights are common. Standard vinyl replacement units can’t match those sash profiles without looking like a patch job. We’ve handled enough Kensington replacements to know when a semi-custom wood-clad unit is worth the extra cost and when a well-sealed aluminum-clad product does the job. We also know that Kensington is unincorporated Contra Costa County, so permits come from the county Building Inspection Division, not a city department. That’s caught more than one Berkeley-based contractor off guard, and it will stall a job if the wrong forms go in. We handle the paperwork correctly the first time.
Pricing for Windows & Doors in Kensington
In Kensington, a standard double-hung replacement typically runs between $800 and $1,700 per window, installed, depending on frame material, glass package, and whether the opening needs rot repair. Full-frame replacements on older homes usually land between $1,500 and $2,800 per window because we’re dealing with original trim profiles and often hidden framing damage. Custom divided-light or wood-clad units for Period Revival homes can push above $3,000 per opening. Entry door installations generally fall between $1,200 and $3,500. We give you a written, line-item quote before any work starts, and the price on that quote is the price on the bill. No change orders. No surprise line items. Call (888) 635-0804 and we’ll walk you through the options side by side on paper.
Service Area - Cities Near Kensington
TruePane serves Kensington and the surrounding East Bay communities, including Parkway, Arden-Arcade, Ladera Heights, and Commerce. If you live nearby, the same crews, the same Done Right Promise, and the same live-answer phone line cover you.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington 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 Windows & Doors in Kensington
Yes. Kensington is within a CAL FIRE Very High Fire Hazard Severity Zone, so window and door replacements must meet California’s Wildland-Urban Interface (WUI) fire-resistant glazing and frame standards. This requirement applies to the entire replacement assembly, including frames, and it doesn’t apply to neighboring flatland communities like El Cerrito or Richmond. We’ll pull the right county permit and make sure the products you choose meet the WUI checklist before anything gets ordered. Call (888) 635-0804 for a free estimate and a straight answer about what your house actually needs.
Plan for $1,500 to $2,800 per window on most full-frame replacements in Kensington, with semi-custom or custom units running higher depending on the sash profile and the condition of the original framing. Older Craftsman and Spanish Colonial homes here often hide rot under the exterior casing, so the per-opening cost can climb once we expose the rough opening. We quote it all in writing before we start, and the price doesn’t move. Call (888) 635-0804 for an exact number on your house.
Kensington’s hillside elevation keeps it in the marine fog belt longer than the lower flatlands, which means original fir and redwood frames stay damp overnight and into the morning for much of the year. That constant moisture accelerates rot in the bottom corners and sill ends, and it’s the main reason we replace frames rather than just sashes on many Kensington homes. Address it early and the repair is usually small. Call us at (888) 635-0804 and we’ll tell you what’s happening.
Yes. Kensington is unincorporated, so every window and door permit goes through the Contra Costa County Building Inspection Division rather than a city department. We handle that paperwork as part of the job, and we know which forms and fees apply to Kensington specifically. Submitting the wrong jurisdiction’s forms is a common stall for contractors who mostly work in Berkeley or El Cerrito. We don’t make that mistake.
No. We quote a fixed, written price before any work begins, and the bill matches that quote. If we find hidden rot or framing issues once we open the wall, we stop, show you exactly what we found, and agree on any additional scope before we proceed. No change orders slipped into the final invoice. Call (888) 635-0804 to schedule your free estimate and see the numbers on paper before you decide.
Written by Dale Kessler, Owner at TruePane Windows & Doors.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Kensington Customers Say
"A casement crank had stripped and the sash was swollen shut. The technician, Ray, fixed the crank on the spot and only then talked about replacement for the three windows that were genuinely done. That is why the whole street uses them now."
- Eleanor G."French doors to the patio, custom size because this house was built in 1961 and nothing is standard. Measured twice, three weeks to fabricate like they warned, and the install day they laid runners over my floors without being asked."
- Marie S."Our bay window had rotted at the sill and two other outfits wanted to talk us into a flat picture window instead. TruePane rebuilt the opening and matched the original look. Neighbors have knocked on the door about it."
- Gene A.



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