Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Westlake Village
Window installation in Westlake Village runs $450-$1,850 per opening for a standard retrofit, and most single-window replacements land between $600 and $1,100 installed. That’s the honest range before anyone steps foot on your property. Westlight Windows & Doors has been doing this work since 2009, and our crews know Westlake Village the way only people who work here every week can: which neighborhoods sit in the Very High Fire Hazard Severity Zone, which side of the county line your permit comes from, and why those original aluminum sliders from 1972 finally gave out. If you’re planning our Window Replacement in Westlake Village, call (903) 354-7134 and we’ll give you a written price before anything gets ordered.

Why Westlight Windows & Doors Is Westlake Village’s Preferred Window Installation Company
We’re an independently owned and operated Kingswell location, and the way we run jobs in Westlake Village is simple: written price before any work starts, a real arrival window, a clean job site when we leave, and a written guarantee on every installation. No revised invoices at the door. No vague ranges that triple once the crew shows up. Our Window Installation team carries eight manufacturer lines, so when a Westlake Village homeowner needs a specific glass package, a fire-rated assembly, or a custom millwork surround, we’re not force-fitting one brand into a job it wasn’t built for.
Owen Satterfield leads our crew, and he’s built the team around a straightforward idea: the homeowner who’s been burned before deserves straight answers. That means when we quote a casement window replacement for a Spanish Colonial near Lindero Canyon, the number we hand you is the number on the final invoice. The Kingswell Guarantee puts every price and every promise in writing before a single screw turns. If the work isn’t right within the guarantee period, we come back and fix it at no charge. That’s the whole promise, in plain words.
Westlake Village homeowners call us because we answer the phone with a live person, 24 hours a day, seven days a week. Not a voicemail box. Not a chatbot. A real human who can schedule an estimate, answer a question about low-e glass, or dispatch a technician. For Window Installation in Westlake Village, that’s the difference between waiting three days for a callback and having a date on the calendar the first time you call.
Window Contractor in Westlake Village
A window contractor in Westlake Village handles the full scope: measuring, ordering, pulling the right permit, scheduling inspections, and installing to code. On the high-end custom homes here, that scope almost always includes coordination with architects and designers, long-lead specialty glass, and custom millwork that can’t be rushed. Our typical Westlake Village window replacement runs $600-$1,100 per opening installed, with oversized sliders and picture windows at the upper end because their size drives premium labor and product costs. The calendar is usually set by lead times on the long-lead items, not by how fast a crew can work.
Architect and Designer Coordination
On Westlake Village remodels, we’re often working from a designer’s spec sheet or an architect’s elevation drawings. That means ordering exact glass packages, matching sightlines, and keeping the view line to the lake or hillside exactly as drawn. We fix the price in writing before anything gets ordered, so the design stays intact and the budget doesn’t drift.
Fire-Rated Assembly Compliance
Large parts of Westlake Village sit in a Very High Fire Hazard Severity Zone, which means new windows and doors must meet California CBC Chapter 7A ember-resistant standards. A window contractor who doesn’t know this will order standard assemblies, fail inspection, and force a reorder that pushes the job out weeks. We know which streets require what before we quote.
Window Installers in Westlake Village
Window installers in Westlake Village handle the physical work: removing old units, re-squaring rough openings, setting new frames level and plumb, flashing and sealing, and installing interior trim. Our installers are background-checked, uniformed technicians, so when someone knocks on your door in Westlake Village, you know exactly who they are and why they’re there. Installation labor on a standard replacement runs $200-$400 per window, and we include it in the written quote you get up front. What you won’t get is a crew that shows up late, leaves debris in the driveway, or hands you a final bill higher than the estimate.
Re-Squaring Heritage Rough Openings
Forty to fifty-five years of settling and racking takes a toll on window and door frames in Westlake Village. We routinely find rough openings that are out of square by half an inch or more. Before setting a new frame, we re-square the opening, shim it properly, and gasket every sash so the window operates the way it should from day one.
Large Glass Handling and Setting
The original sliders and picture windows in Westlake Village often span entire rear walls. Setting a 16-foot unit takes a crew that knows rigging, weight distribution, and how to protect the surrounding stucco. We’ve done enough of these in Westlake Village that the big glass doesn’t slow us down; the millwork lead time is what sets the schedule.

Trusted Brands We Service in Westlake Village
We stock and install eight manufacturer lines, including CGI, ES Windows, and ECO Window Systems. CGI gives us impact-rated and fire-rated assemblies for the Very High Fire Hazard Severity Zone work. ES Windows handles the narrow sightlines and architectural profiles common on Westlake Village’s Spanish Colonial and Mediterranean homes. ECO Window Systems covers energy-efficient dual-pane packages for the hot Conejo Valley summers. Because we carry multiple lines, we match the product to the job rather than forcing one brand onto every opening. Parts and warranty service for these brands are coordinated through our local crews, so turnaround in Westlake Village stays tight.
Common Window Installation Problems We See in Westlake Village Homes
- Original aluminum single-pane windows still in place. Westlake Village was built between 1967 and the mid-1980s, which means most of the original windows are now 40-55 years old. The aluminum frames conduct heat, the single-pane glass does almost nothing for energy efficiency, and the seals have long since failed.
- Failed CBC Chapter 7A compliance on reorders. We see jobs where a contractor ordered standard assemblies, then discovered the home sits in the Very High Fire Hazard Severity Zone. The inspector rejects the install, and the homeowner waits another six to eight weeks for fire-rated units. We verify the zone before we quote.
- Wrong-county permits across the LA-Ventura line. Westlake Village straddles the Los Angeles and Ventura County line. A City of Westlake Village permit and a Ventura County permit involve different inspectors and different code interpretations. Pull the wrong one and the inspection fails on a technicality. Our crews verify the county before scheduling.
- Racked sliding glass door frames from Diablo and Santa Ana winds. The Conejo Valley gets strong wind events that push on large glass and rack aluminum door frames out of square. We’ve seen jamb joints separate by a quarter inch after a single bad spring. Re-squaring the rough opening before setting the new frame is the only fix that lasts.
Pricing for Window Installation in Westlake Village, CA
Most single-window replacements in Westlake Village run $600-$1,100 installed, including the unit, labor, flashing, and interior trim. Double-hung and casement windows land at the lower end; oversized picture windows and sliders run higher because the glass is bigger and the crews are spending more time on each opening. Bay and bow windows start around $1,200 and go up from there depending on the projection and the millwork. Fire-rated assemblies for the Very High Fire Hazard Severity Zone add 15-30% over standard units due to laminated glass interlayers and ember-resistant framing requirements. Every quote we give is a written, fixed price before anything gets ordered. Call (903) 354-7134 for your free estimate – and bring the dimensions if you have them.
We Also Serve Cities Near Westlake Village
Our crews work throughout the Conejo Valley and the surrounding hillsides. We regularly serve Westlake Village, Thousand Oaks, Agoura Hills, Oak Park, and Calabasas. Same fixed pricing, same written guarantee, same live phone coverage. If you’re a few miles down the 101 or over the grade, we’ll be there on the date we gave you.
Serving Westlake Village, CA - Our Local Coverage Area
We’re based in the Westlake Village 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 Installation in Westlake Village
Yes, in most of Westlake Village. Large portions of the community sit in a Very High Fire Hazard Severity Zone, which means new windows and doors must meet California CBC Chapter 7A ember-resistant standards. That typically means dual-pane tempered glass, laminated interlayers on the inner pane, and ember-resistant framing. The 2018 Woolsey Fire burned to the community’s doorstep, and insurers now routinely require proof of compliance. Call (903) 354-7134 if you’re not sure whether your street is in the zone – we’ll check before we quote.
Westlake Village straddles the Los Angeles and Ventura County line, and the two counties use different inspectors and different code interpretations. A job on one side of the line pulls a City of Westlake Village permit; a job a few blocks away pulls a Ventura County permit. Getting this wrong means a failed inspection and a delayed project, so we verify the county before scheduling any inspection. It’s a small detail that saves Westlake Village homeowners weeks of frustration.
The dominant styles in Westlake Village are Spanish Colonial, Mediterranean, and California ranch, and the right window usually comes down to sightlines and proportions. Casement and fixed windows with narrow frames keep the view to the lake or hillside unobstructed. For the Mediterranean homes, arch-top windows and darker bronze frames often match the original architecture better than white vinyl. We carry ES Windows and other lines specifically because their narrow profiles work on these homes. The best way to decide is to see samples against your actual stucco – call (903) 354-7134 and we’ll bring them out.
The Conejo Valley gets strong Diablo and Santa Ana wind events that push on large glass surfaces and accelerate weatherstripping failure. Aluminum frames from the 1970s and 1980s rack out of square under this load, which is why so many Westlake Village sliders stick, leak air, or won’t latch. Newer units with properly gasketed sashes and re-squared rough openings hold up far better. We re-square every rough opening before setting a new frame, and we use gasketing rated for the wind loads this valley sees.
Most of them are, yes. Westlake Village was built as a single master-planned community between 1967 and the mid-1980s, so the housing stock is unusually uniform in age. That means a large share of the community’s original aluminum windows and sliding glass doors are now 40-55 years old, with failed seals, pitted frames, and single-pane glass that does almost nothing for heat gain. If yours are still original, they’re past their service life. Call (903) 354-7134 for a free estimate and a written price – we’ll tell you honestly whether replacement makes sense or whether you’ve got a few more years in them.
Owen and the Westlight Windows & Doors crew work throughout Westlake Village, from the First Neighborhood lakefront homes to the hillside properties above Lindero Canyon. We know this community’s housing stock, its fire-zone requirements, and its permit quirks better than any contractor driving in from outside the valley. Call (903) 354-7134 and we’ll give you a written price and a real arrival window – before a single screw turns.
Written by Owen Satterfield, Owner at Westlight Windows & Doors, serving Westlake Village since 2009.










Before
After
Before
After
Before
After