Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Windows & Doors Services in Thousand Oaks, CA
If your windows fog between the panes or your sliding door sticks every June, you already know the problem is not going to fix itself. In Thousand Oaks, the mix of marine layer moisture and hard Santa Ana wind cycles ages window and door assemblies faster than most homeowners expect, and most of the original aluminum single-pane stock in this city is past due for replacement. We install, replace, and service windows and doors across Thousand Oaks with straightforward pricing and work that holds up. Call (888) 635-0804 and a live person answers, day or night.
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 Thousand Oaks Homeowners Choose TruePane Windows & Doors
TruePane Windows & Doors was founded in 2008 by second-generation glazier Dale Kessler, and the standard has not moved since. Our technicians measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves your driveway. That last part matters here in Thousand Oaks more than most places, because after the Woolsey Fire, some hillside insurers now ask for written product specs on replacement windows as a condition of policy renewal. We provide that documentation as a matter of course, not as a favor.
We work regularly in the Ranch-style tracts off Lynn Road, through the hillside streets in the Sunset Hills area, and across the original Conejo Valley subdivisions where houses still carry their late-sixties aluminum sliders. Homeowners here tend to keep their houses for decades, and they want a company that will answer the phone in ten years if something shifts. We hire local apprentices and train them into journeymen. We plan to be here.
Windows & Doors Services We Offer in Thousand Oaks
Window Installation
Full-frame and retrofit window installation for every major manufacturer line we carry, measured and set square so the sash operates without binding. We set windows in Thousand Oaks homes to handle both marine-layer humidity and Santa Ana-driven pressure swings.
Learn more about our Window Installation in Thousand Oaks.

Door Installation
Entry doors, French doors, and custom door systems installed plumb and sealed, with fire-rated options where Thousand Oaks WUI code requires them. A door that binds in July was never set right; ours are.
Learn more about our Door Installation in Thousand Oaks.

Window Replacement
Replacing fogged, leaky, or original single-pane windows with dual-pane and energy-efficient units suited to the Conejo Valley climate. We handle the paperwork side too, including written specs your insurer may ask for.
Learn more about our Window Replacement in Thousand Oaks.

Impact Windows & Doors
Impact Windows & Doors in Thousand Oaks, with impact-rated glazing from PGT and CGI for homes in the wildland-urban interface, installed to manufacturer spec so the ratings actually hold. In Thousand Oaks, this is a compliance conversation as much as a comfort one.

Energy-Efficient Windows
Energy-Efficient Windows in Thousand Oaks with Low-E dual-pane and triple-pane glass packages that cut heat gain in summer and reduce condensation in the marine layer months. Older Thousand Oaks homes with original aluminum frames see the biggest change in both comfort and utility bills.

Sliding & Patio Doors
Sliding & Patio Doors - Thousand Oaks that glide on track and seal tight, sized for the wide openings common in the Ranch and Spanish-eclectic stock throughout the city. We also address binding caused by years of seasonal frame movement.

Glass Railing Systems
Glass Railing Systems - Thousand Oaks with frameless and semi-frameless glass railing for decks and balconies that overlook the open space parcels ringing much of the city. The glass is specified for the exposure, and the hardware is set to code.

Custom Windows & Doors
Custom shapes, sizes, and configurations for odd openings and hillside sightlines. We quote the manufacturer line that fits the job, not the one that fits our margin.

Neighborhoods We Serve in Thousand Oaks
Our crews work throughout Thousand Oaks, and we typically schedule most jobs in the area in a single visit. We serve neighborhoods including:
- Sunset Hills
- Newbury Park
- Wildwood
- Lynn Ranch
- Conejo Oaks
If your street is not listed, call us anyway. We serve the entire 91358 ZIP and the surrounding Conejo Valley.
Why Thousand Oaks’s Climate & Housing Affect Windows & Doors
Thousand Oaks sits within California-designated High Fire Hazard Severity Zones, and the 2018 Woolsey Fire changed what a window or door is expected to do here. Homes along the wildland-urban interface are being rebuilt or retrofitted to WUI code, which means fire-rated glazing, tempered dual-pane units, and ember-resistant door sealing are real permit and insurance requirements, not add-ons. A window that would pass inspection in Oxnard or Camarillo may not clear review on a hillside lot off Westlake Boulevard or Potrero Road.
The city’s housing stock compounds this. Most of Thousand Oaks was master-planned and built between the late 1950s and the 1980s, leaving thousands of Ranch and Spanish-eclectic tract homes with original aluminum single-pane sliders and lightweight exterior doors. Those assemblies are simultaneously energy-inefficient and fire-vulnerable, and many sit adjacent to open space parcels that trigger WUI code review on any permitted replacement. This is not a generic window market.
Pricing for Windows & Doors in Thousand Oaks
Replacement windows in Thousand Oaks typically run from $700 to $1,600 per opening installed, depending on frame material, glass package, and whether impact or fire-rated glazing is required. Entry door replacements generally start around $1,200 and run higher for custom or WUI-compliant units. Sliding door replacements commonly fall between $2,800 and $5,000. A note on those figures: impact-rated and fire-rated products from manufacturers like PGT, CGI, and ES Windows add material cost, and WUI code review on hillside properties can add scope. We quote in writing before we start, and the number on the quote is the number on the bill. Call (888) 635-0804 for a free estimate.
Service Area - Cities Near Thousand Oaks
TruePane’s Thousand Oaks crews also work regularly in Westlake Village, Oak Park, Agoura Hills, and Simi Valley. If you are in one of those cities, the same crew, the same warranty paperwork, and the same live-answer phone apply.
Serving Thousand Oaks, CA - Our Local Coverage Area
We’re based in the Thousand Oaks 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 Thousand Oaks
Plan on $700 to $1,600 per window installed, with impact-rated and WUI-compliant glazing at the higher end of that range. Sliders and custom shapes can exceed it. Call (888) 635-0804 for a written, line-item quote. Estimates are free.
That depends on your specific lot and insurer. If your home sits within a High Fire Hazard Severity Zone or your renewal paperwork asks for documentation of fire-rated glazing, then yes, impact or fire-rated units may be required. We can tell you what your property actually needs and provide written specs your insurer will accept.
No. We quote in writing after we have measured and walked the job. If code review adds a requirement we could not have known about before opening the wall, we stop and discuss it with you before any added cost, in writing. No surprise line items.
Yes. When a permit is required, we pull it, schedule the inspection, and make sure the job passes. If we are doing WUI-compliant work, the permit record and product documentation also serve as the paper trail many Thousand Oaks insurers now ask for at renewal.
Most single-opening replacements are done in one visit. A full-house window replacement or multi-door project typically runs two to five working days depending on the number of openings and whether custom sizing is involved. We will give you a schedule in writing and keep to it.
Call TruePane Windows & Doors in Thousand Oaks
If your windows fog, your doors bind, or your insurer is asking questions about fire-rated glazing, call us and we will sort it out straight. A live person answers at (888) 635-0804, twenty-four hours a day, seven days a week. Ask for a free estimate, and we will put the numbers in writing before any work begins. If the pane is not true, the job is not done.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Thousand Oaks with windows and doors done right.
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 Thousand Oaks Customers Say
"Whole-house window replacement at 71 years old is not something you want to do twice. Dale walked the house himself for the quote. Crew was the same three men all four days, and the foreman knew every window by room."
- Pat and Ray L."Eleven windows replaced in two days. The crew chief, Marcus, showed me the level on every single frame before they caulked it. My wife noticed the street noise was gone before I did."
- Ronald P."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.



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