Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
AfterWindows & Doors in West Hills, CA
Window installation in West Hills runs $650-$3,200 per opening depending on frame material and glass package, with most 1960s Ranch homes needing full-frame replacements between $850 and $1,650 per window. The Woolsey Fire burn history and Very High Fire Hazard Severity Zone designation push many West Hills projects toward dual-pane tempered glass assemblies that big-box stock units cannot meet. Call (509) 265-6387 for a written price before any work starts.
Why West Hills Homes Are Different
West Hills sits inside the Very High Fire Hazard Severity Zone, and the November 2018 Woolsey Fire burned through portions of the neighborhood itself. Homes rebuilt or substantially renovated since then must carry California’s fire-resistant glazing: multi-pane tempered glass assemblies and ember-resistant door units with intumescent seals. That requirement is not universal a few miles east in Reseda or Northridge, which is why fire-rated window and door upgrades are the primary driver of local demand here, not an occasional upsell.
The housing stock tilts heavily toward 1960s and 1970s Ranch tract homes built during the western expansion of what was then Canoga Park. Most still carry original aluminum single-pane windows and hollow-core or sliding-glass door assemblies. The northern hillside streets near the Santa Susana foothills add a second layer: 1980s and 1990s custom homes with large west- and south-facing glass that absorbs compounding pressure from fire-code compliance and brutal thermal gain. Santa Ana winds funnel through the Simi Hills corridor with enough sustained force to degrade door weatherstripping and window perimeter seals faster than in eastern Valley neighborhoods.
Our Main West Hills Services
The two services West Hills homeowners call about most are full door system replacements and whole-home window swaps, both shaped by the fire-code layer and the aging Ranch-era openings. Each has its own dedicated page for West Hills.
Door Installation in West Hills
Most West Hills door replacements we handle involve pulling a hollow-core or original sliding-glass unit and setting an ember-resistant door with intumescent seals, which the LA County plan-check process now requires on the northern burn-adjacent streets. We measure, write the scope in the same document, and install with the written price as the reference point. Door Installation in West Hills covers pricing, code requirements, and the brands we specify.
Window Replacement in West Hills
Window replacement in West Hills often means cutting out 1960s aluminum single-panes and setting dual-pane tempered units that clear the SFM-listed standard before the inspector arrives. The west-facing elevations take the worst of the afternoon heat, so frame and glazing choices depend on exposure. Window Replacement in West Hills walks through the full cost breakdown and what the county plan-checker will ask for.
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.
BeforeAfterWindow Installation in West Hills
Window installation in West Hills means working around the fire-code layer and the area’s 1960s Ranch-era framing, where original aluminum single-panes have spent five decades under Santa Ana wind pressure and 105°F west-facing summer heat. Most jobs call for full-frame replacement with dual-pane tempered glass rather than pocket inserts, because the existing frames carry old single-glazing that will not pass current plan-check standards. For a full breakdown of the process, see Window Installation.
Single & Double Hung Windows
Signs you need it
Upper sashes that drop on their own, cracked glazing, or frames that rattle in high wind are the common failures in 1960s Ranch homes.
What it costs in West Hills
Single and double hung windows run $650-$1,800 per opening, depending on glazing package and frame material.
How we do it
We pull the old sash weights and jamb liners, set a new full-frame unit, and flash the perimeter to keep Santa Ana-driven rain out.
Casement Windows
Signs you need it
Crank mechanisms that bind, bent hinges, or warped frames are common where west-facing casements bake all afternoon.
What it costs in West Hills
Casement windows run $950-$2,400 per opening, with fire-rated tempered glass pushing toward the upper end.
How we do it
We replace the crank hardware, set the sash into a new full frame, and adjust the closure so the weatherstripping seats evenly.
What Window Installation Costs in West Hills
| Item | Typical range in West Hills |
|---|---|
| Single or double hung window | $650-$1,800 |
| Casement window | $950-$2,400 |
| Full-frame replacement with tempered dual-pane | $850-$1,650 per opening |
Do I need fire-rated glazing for window installation in West Hills?
If the opening faces the Woolsey burn perimeter or sits within the VHFHSZ, the plan-checker will likely require dual-pane tempered glass listed by the State Fire Marshal. Standard stock units often do not qualify. Call (509) 265-6387 for a written scope we can take to the county.
Will the price change once work starts in West Hills?
No. Haven Clause 1 means the measured survey and the written quote are the same document, and the final invoice matches it. We do not work from change orders. Call (509) 265-6387 to schedule a measured survey.
Impact Windows & Doors in West Hills
Impact windows and doors in West Hills carry a double mandate: the Woolsey Fire aftermath forces fire-rated glazing, while Santa Ana wind gusts through the Simi Hills corridor demand assemblies that hold under pressure and flying debris. Homeowners who lived through 2018 tend not to ask whether impact glazing is worth it; they ask which product line clears both the fire code and the wind-load calcs. Impact Windows & Doors is our hub for that specification.
Impact-Resistant Windows
Signs you need it
Existing aluminum single-panes that bow in Santa Ana gusts or show perimeter seal failures are candidates for a full impact assembly.
What it costs in West Hills
Impact-resistant windows run $1,800-$4,200 per opening, with larger west-facing units at the high end.
How we do it
We specify an assembly by pressure rating, set the laminated glass into a reinforced frame, and anchor it per Miami-Dade and LA County details.
Double Hung Impact Windows
Signs you need it
Double hung sashes that leak dust through the meeting rail during wind events are the most common trigger on Ranch homes.
What it costs in West Hills
Double hung impact windows run $2,200-$3,800 per opening, depending on glass thickness and frame reinforcement.
How we do it
We replace the entire hung assembly with an impact-rated frame, install interlocking meeting rails, and test the balance under load.
What Impact Windows & Doors Costs in West Hills
| Item | Typical range in West Hills |
|---|---|
| Impact-resistant window | $1,800-$4,200 |
| Double hung impact window | $2,200-$3,800 |
| Impact-rated door unit with intumescent seal | $3,200-$9,800 |
Do impact windows in West Hills meet the fire-code requirement?
Not automatically. The fire code requires multi-pane tempered glass listed by the State Fire Marshal; impact glazing must be specified to clear both the fire listing and the wind-load calculation. Call (509) 265-6387 for a written specification.
Will impact windows reduce my insurance premium in West Hills?
Many insurers in the VHFHSZ apply a discount for documented impact-rated assemblies, but the exact amount depends on the carrier and your policy. We give you the written product spec to submit. Call (509) 265-6387 for a quote.
Energy-Efficient Windows in West Hills
Energy-efficient windows in West Hills fight a specific set of forces: 105°F afternoons on west-facing elevations, low-e glass that cuts solar heat gain without darkening interiors, and edge seals that degrade under sustained Santa Ana wind pressure. Most 1960s Ranch homes run original single-pane aluminum, which means the thermal gain is not a minor inefficiency; it is the largest source of afternoon heat in the house. See Energy-Efficient Windows for the full product breakdown.
Low-E & Argon Gas Glass
Signs you need it
Rooms that run 10-15°F hotter on the west side of the house, or glass that radiates heat four feet into the room by 3 p.m.
What it costs in West Hills
Low-e with argon gas runs $850-$2,000 per opening, depending on the U-factor target and frame material.
How we do it
We spec the low-e coating by orientation, match it to an argon-filled dual-pane unit, and seal the edge to stop gas loss.
ENERGY STAR Replacement Windows
Signs you need it
Windows with condensation between panes, failed edge seals, or glass that is warm to the touch on hot afternoons.
What it costs in West Hills
ENERGY STAR replacement windows run $700-$1,900 per opening, with certified packages on the higher side.
How we do it
We select a certified glazing package for the Southern California climate zone, set the unit in a sealed frame, and verify the label before sign-off.
What Energy-Efficient Windows Costs in West Hills
| Item | Typical range in West Hills |
|---|---|
| Low-e with argon gas | $850-$2,000 |
| ENERGY STAR replacement window | $700-$1,900 |
| Full-home package, 10-14 openings | $9,500-$23,000 |
What U-factor should I target in West Hills?
For west-facing elevations, aim for a U-factor of 0.30 or lower and an SHGC under 0.25 to cut afternoon heat gain without losing light. We write the spec on your measured survey. Call (509) 265-6387 for a free estimate.
Will energy-efficient windows pay for themselves in West Hills?
Cooling costs drop measurably when west-facing single-panes come out, but the big return is comfort and the end of edge-seal failure. The written quote includes the performance specs, so you can run your own numbers.
Sliding & Patio Doors in West Hills
Sliding and patio doors in West Hills take a beating from Santa Ana wind pressure that funnels through the Simi Hills corridor and loads the rollers, tracks, and weatherstripping on original 1960s aluminum sliders. The fire-code layer adds a second requirement on the north hillside streets: replacement slider units must carry ember-resistant door seals and dual-pane tempered glass in many cases. Sliding & Patio Doors covers the full category.
Patio Doors
Signs you need it
A door that drags, sticks, or whistles during wind events has a track or roller problem that replacement fixes permanently.
What it costs in West Hills
Patio doors run $2,800-$7,500 installed, with fire-rated units adding to the price.
How we do it
We pull the old aluminum frame, set a new sill with proper drainage, and hang the panel so it rolls without drag.
Impact Sliding Glass Doors
Signs you need it
Sliders facing the Santa Susana foothills that flex under wind load or show seal gaps are the typical call on hillside streets.
What it costs in West Hills
Impact sliding glass doors run $4,500-$9,800 per opening, depending on width and glazing.
How we do it
We install a reinforced frame, set laminated impact glass, and anchor the track so the assembly holds under positive and negative pressure.
What Sliding & Patio Doors Costs in West Hills
| Item | Typical range in West Hills |
|---|---|
| Patio door replacement | $2,800-$7,500 |
| Impact sliding glass door | $4,500-$9,800 |
| Screen door installation | $300-$900 |
Do I need a permit to replace a patio door in West Hills?
On hillside streets near the Woolsey burn perimeter, yes: LA County plan-checkers review the fire-rated glazing and door unit spec before sign-off. We handle the submittal and documentation. Call (509) 265-6387 for the written scope.
Will the price change once work starts in West Hills?
No. The measured survey and the written quote are the same document, so there is no change-order process. We follow Haven Clause 1 on every job.
Impact Garage Doors in West Hills
Impact garage doors in West Hills matter because the garage is often the weakest opening on the house during a Santa Ana wind event, and a failed door lets pressure inside the structure. The Woolsey Fire aftermath also means ember intrusion through garage door edges became a real concern for homeowners who watched what the fire did to attached garages along the burn perimeter. Impact Garage Doors is our hub for the category.
Hurricane-Rated Garage Doors
Signs you need it
A door that bows visibly inward under wind gusts, or tracks that flex enough to pop rollers, is failing its structural job.
What it costs in West Hills
Hurricane-rated garage doors run $3,800-$9,500 installed, depending on width and wind-load rating.
How we do it
We install a reinforced door with a wind-load rating matched to the elevation, then brace the tracks and anchors per manufacturer detail.
Wind-Load Code Compliance
Signs you need it
If the county plan-checker flags the garage door as non-compliant on a renovation permit, the door must be brought up to code.
What it costs in West Hills
Wind-load code compliance work runs $1,200-$4,000 in addition to the door, depending on what needs reinforcement.
How we do it
We take wind-load calcs from the product data, install the anchors and bracing the detail sheet requires, and photograph the work for the record.
What Impact Garage Doors Costs in West Hills
| Item | Typical range in West Hills |
|---|---|
| Hurricane-rated garage door | $3,800-$9,500 |
| Wind-load code compliance retrofit | $1,200-$4,000 |
| Garage door replacement, standard | $1,500-$4,500 |
Does my West Hills garage door need to be impact-rated?
Not every home, but if the garage door faces the Simi Hills corridor or sits within the VHFHSZ, an impact or wind-rated door is often required by plan-check. We write the spec in the quote. Call (509) 265-6387 for the details.
Will my homeowner’s insurance cover an impact garage door in West Hills?
Some policies in the fire hazard zone apply a hardening discount for documented impact-rated doors. We give you the product spec and photo record to submit to your carrier.
Custom & Geometric Windows in West Hills
Custom and geometric windows in West Hills appear most often on the 1980s and 1990s hillside homes north of the Valley floor, where large west-facing glass expanses need a shape that stock units cannot match and a fire-rated glazing package that plan-check will accept. Round-top, trapezoid, and oversized fixed units in those homes carry the same dual-pane tempered requirement as standard openings. Custom & Geometric Windows covers the category.
Geometric & Shaped Windows
Signs you need it
A fixed shaped window with a failing edge seal or cracked glass on a west-facing elevation is a candidate for custom fabrication.
What it costs in West Hills
Geometric and shaped windows run $1,400-$3,800 per unit, depending on shape complexity and glazing.
How we do it
We take a measured template, order the unit from a manufacturer that can hold the shape and the fire-listing, and set it with full flashing.
Oversized Openings
Signs you need it
Fixed glass walls or large picture windows that have lost their seal and now hold a fog are the common oversized jobs on hillside homes.
What it costs in West Hills
Oversized openings run $2,200-$6,500 per unit, with laminated tempered glass at the upper end.
How we do it
We field-measure the rough opening, spec a unit that carries the wind-load and fire-rated glass requirements, and install it with a reinforced perimeter.
What Custom & Geometric Windows Costs in West Hills
| Item | Typical range in West Hills |
|---|---|
| Geometric or shaped window | $1,400-$3,800 |
| Oversized fixed opening | $2,200-$6,500 |
| Arched or curved window | $1,800-$4,200 |
Can I get a fire-rated custom window in West Hills?
Yes. Custom shapes can be fabricated with dual-pane tempered glass listed by the State Fire Marshal, but the lead time is longer than a stock unit. We put the spec in writing. Call (509) 265-6387 to start with a measured survey.
Will the custom window price change after I order?
No. The written quote covers the template, the fabrication, and the installation as one document, and we do not issue change orders.
Brands We Service in West Hills
We specify from eight manufacturer lines, including CGI, CWS, ES Windows, and ECO Window Systems, by performance tier and price range rather than margin. Parts are ordered per job and arrive within standard lead times. See our brands for the full catalog.
Pricing for Windows & Doors in West Hills, CA
| Service | Typical range in West Hills |
|---|---|
| Window installation, single/double hung | $650-$1,800 per opening |
| Casement windows | $950-$2,400 |
| Impact-resistant windows | $1,800-$4,200 |
| Low-e with argon gas | $850-$2,000 |
| ENERGY STAR replacement windows | $700-$1,900 |
| Patio doors | $2,800-$7,500 |
| Impact sliding glass doors | $4,500-$9,800 |
| Impact garage doors | $3,800-$9,500 |
| Geometric & shaped windows | $1,400-$3,800 |
| Oversized openings | $2,200-$6,500 |
What pushes price up in West Hills: fire-rated tempered glazing, hillside wind-load calcs, and 1980s custom-home sizes. Every written quote follows Haven Clause 1, so the price you see before work starts is the price you pay.
Neighborhoods We Serve in West Hills
We cover the full West Hills footprint, from the Ranch tracts south of Roscoe to the hillside streets near the Santa Susana foothills and the burn perimeter. Scheduling is coordinated from the brand’s Los Angeles office, and crews serve West Hills directly.
- Ranch tracts south of Roscoe Boulevard
- Hillside streets near the Santa Susana foothills
- Woolsey burn perimeter homes on the western edge
- Custom-home pockets north of Victory Boulevard
- Streets along the Simi Hills corridor
Service Area - Cities Near West Hills
We also work in Canoga Park, CA, Woodland Hills, CA, Chatsworth, CA, and Northridge, CA. Each area carries its own fire-zone and housing-stock profile, and the same written-price process applies.
Serving West Hills, CA - Our Local Coverage Area
We’re based in the West Hills 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 West Hills
Scheduling is coordinated from the Los Angeles office, and crews cover West Hills directly. Standard lead time for a measured survey is a few days. Call (509) 265-6387 to lock in a date.
Some hillside and custom-home pockets have HOA design review, but most Ranch tracts do not. We can give you the written product specs to submit if your association asks. Call (509) 265-6387.
If the job is within the VHFHSZ or on a newly permitted structure, yes. We handle the documentation and the photo record so the inspector sees exactly what was installed.
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 West Hills Customers Say
"Patio door had dropped and would not lock. They adjusted it rather than selling me a new one, and charged accordingly."
- Simone T."The survey measurements and the quote were the same piece of paper. Nothing changed on install day, which is not what happened with the two other companies we had out."
- Annette R."Replaced eight windows. They showed me the U-factor on the units they were actually fitting rather than the brochure numbers."
- Kofi B.