Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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After
Before
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Before
AfterWindows & Doors in Altadena, CA
Window installation in Altadena means working inside a Very High Fire Hazard Severity Zone, where LA County Building & Safety requires Chapter 7A fire-hardening glazing and ember-resistant frames on nearly every replacement. Homes here split between 1910s-1940s Craftsman bungalows with original wood single-pane windows and 1950s-60s ranch tracts, many of which still carry non-compliant fenestration. We write the measured survey and the written quote as the same document, so you know your exact price before any work starts. Call (509) 265-6387 for a free estimate.
Why Altadena Homes Are Different
Altadena sits unincorporated, at the mouth of San Gabriel Mountain canyons that funnel Santa Ana winds exceeding 60 mph straight through residential streets. That is not a weather footnote. It changes which window and door assemblies make sense. Chapter 7A plan-checkers at the LA County Arcadia district office routinely flag standard vinyl frames with basic insulated glass that would pass in incorporated Pasadena. Every opening we replace here gets specified for ember resistance first, thermal performance second, and style third. The January 2025 Eaton Fire added another layer: thousands of ground-up rebuilds now need full fire-rated window and door systems, and the code has not loosened. Older Craftsman bungalows along the hillside streets often have rotted wood sills and single-pane sashes that have warped out of square. The flatter east and central ranch homes were built when energy codes barely existed, so south- and west-facing glass absorbs intense afternoon sun radiating off the mountain slopes. Homeowners who grew up here call it what it is: hot rooms in summer, drafts in winter, and fly ash on the sill after a wind event. The fix is not a standard retrofit. It is a measured, permitted replacement specified for Altadena’s three conditions at once: fire, wind, and sun.
Our Main Altadena Services
Two services carry most of the call volume from Altadena homeowners: door installation and window replacement. Both run through the same LA County permit process, and both require Chapter 7A-compliant product choices.
Door Installation in Altadena
Doors here do more than swing. They are the first line against ember intrusion during Santa Ana events, and LA County plan-checkers look at every fire-rated door assembly. We install exterior entry doors, French patio doors, and fire-rated assemblies specified for Chapter 7A, with the written price fixed before the first cut. Door Installation in Altadena covers the full scope.
Window Replacement in Altadena
Replacing windows in Altadena means matching the fire-hardening code while keeping the architectural character of a Craftsman bungalow or the clean lines of a mid-century ranch. We measure each rough opening, document the sightline, and write the quote from that survey. Window Replacement in Altadena details what to expect.
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 Altadena
Window installation in Altadena means replacing original wood single-pane sashes in 1910s-1940s Craftsman bungalows and drafty aluminum frames in 1950s-60s ranch homes with Chapter 7A-compliant, Low-E dual-pane assemblies. Many of these openings have warped over decades of mountain-driven wind and sun, and LA County plan-checkers will not let a basic vinyl replacement pass without fire-hardening glazing. The work starts with a measured survey the customer keeps. That survey is the basis of the written quote, and the written quote cannot change. For the full scope, see Window Installation.
Single & Double Hung Windows
Signs you need it
Sashes that rattle in the wind, sash cords that have snapped on older Craftsman frames, or a top pane that will not stay up after years of mountain-driven air pressure.
What it costs in Altadena
Single and double hung replacements in Altadena generally run $725-$1,800 per window, with the exact figure fixed in the written quote from the measured survey.
How we do it
We measure the rough opening, specify the Chapter 7A glazing, remove the old sash and balance system, square the frame, install the new unit, and leave a documented photo record of every opening.
Casement Windows
Signs you need it
Casement sashes that stick, cranks that strip, or water staining on the interior sill after wind-driven rain out of the Angeles National Forest.
What it costs in Altadena
Casement replacement in Altadena typically falls between $850 and $2,100 per window, with the price written before work starts.
How we do it
We take the measured survey, select the fire-rated casement unit and hardware, remove the old sash cleanly, set the new frame into the opening, and flash and seal to code.
What Window Installation Costs in Altadena
| Item | Typical range in Altadena |
|---|---|
| Single or double hung unit | $725-$1,800 |
| Casement unit | $850-$2,100 |
| Horizontal roller unit | $600-$1,500 |
Do Altadena window replacements require a permit?
Yes. Altadena is unincorporated, so permits route through LA County Building & Safety, and Chapter 7A fire-hardening glazing is required on nearly every replacement.
How long does a window installation take in Altadena?
A typical single-family window package installs in one to three days, depending on rough opening conditions and the permit schedule. Call (509) 265-6387 for a written timeline.
Impact Windows & Doors in Altadena
Impact windows and doors in Altadena are not a coastal luxury. They are the assembly that survives an ember shower when Santa Ana winds push fire down the canyon mouths above the community. LA County Chapter 7A plan-checkers treat impact-rated glazing as a compliant path for fire-hardening, and many post-Eaton Fire rebuilds specify it from the start. We install impact-rated windows and doors from PGT, CGI, and CWS, with the measured survey and the written quote as one document. See Impact Windows & Doors for full details.
Impact-Resistant Windows
Signs you need it
You live on a hillside street with direct canyon-wind exposure and the existing glazing is standard annealed glass that has already cracked or failed under wind load.
What it costs in Altadena
Impact-resistant window units in Altadena typically run $800-$2,200 per window, depending on size and frame type.
How we do it
We measure the opening, specify the impact-rated glazing and frame, pull the LA County permit, install the unit with the correct anchoring, and leave a documented photo record of the finished work.
Double Hung Impact Windows
Signs you need it
Your existing double hungs are original wood sashes facing a canyon mouth, and you want the look of a double hung with a tested, impact-rated glazing system.
What it costs in Altadena
Double hung impact windows in Altadena generally fall between $1,300 and $2,700 per unit.
How we do it
We survey the opening, specify the PGT or CGI double hung impact unit, remove the old sashes, set the new frame, flash and seal, and document the finished sightline.
What Impact Windows & Doors Costs in Altadena
| Item | Typical range in Altadena |
|---|---|
| Impact-resistant window unit | $800-$2,200 |
| Double hung impact window | $1,300-$2,700 |
| Impact sliding glass door | $2,800-$6,500 |
Are impact windows required in Altadena?
Chapter 7A requires fire-hardening glazing, and impact-rated assemblies are one accepted compliant path. A plan-checker may approve other tested assemblies, but impact-rated product removes the argument.
Do impact windows reduce heating and cooling costs in Altadena?
Yes, because impact glazing usually includes Low-E coatings and tighter seals, which cut solar gain on south- and west-facing exposures. Call (509) 265-6387 for a free estimate.
Energy-Efficient Windows in Altadena
South- and west-facing rooms in Altadena absorb intense afternoon sun radiating off the San Gabriel slopes, and homes built in the 1950s-60s were never designed for that heat load. Energy-efficient windows with Low-E dual-pane glass and argon fill cut cooling demand measurably, while also satisfying Chapter 7A glazing requirements when specified correctly. We quote these as written, measured upgrades, not as generic replacement talk. See Energy-Efficient Windows for the full service.
Low-E & Argon Gas Glass
Signs you need it
Rooms on the west side of the house stay hot through 7 p.m. in summer, and the existing glass is clear single-pane with no reflective coating.
What it costs in Altadena
Low-E argon-filled replacement units in Altadena typically range from $650 to $1,700 per window.
How we do it
We take the measured survey, specify the right Low-E coating for your exposure, install the argon-filled unit, and verify the seal with a documented reading.
ENERGY STAR Replacement Windows
Signs you need it
Your utility bills spike from May through October, and the window glass is warm to the touch in direct afternoon sun.
What it costs in Altadena
ENERGY STAR replacement windows in Altadena run $700-$1,900 per unit, with the written quote fixed before installation.
How we do it
We survey every opening, specify an ENERGY STAR-rated unit with the correct U-factor and SHGC for your exposure, install it, and document the final inspection.
What Energy-Efficient Windows Costs in Altadena
| Item | Typical range in Altadena |
|---|---|
| Low-E argon window unit | $650-$1,700 |
| ENERGY STAR replacement unit | $700-$1,900 |
| UV-blocking window film or glass | $350-$900 |
What is the right U-factor for Altadena?
For Altadena’s climate zone, we usually specify a U-factor of 0.30 or lower and a SHGC near 0.25 for south- and west-facing glass, but the survey determines the exact number.
Will energy-efficient windows help with summer heat in Altadena?
Yes. Low-E dual-pane glass reduces solar gain from the mountain-reflected afternoon sun, cutting interior temperature swings and cooling load. Call (509) 265-6387 for a written quote.
Sliding & Patio Doors in Altadena
Sliding and patio doors in Altadena sit on the rear or side walls of ranch homes built between 1950 and 1970, and many original aluminum-frame sliders have lost their seal, bind in the track, or offer no ember resistance when the Santa Ana winds push fire toward the house. New impact-rated or Chapter 7A-compliant sliding assemblies fix both the daily function and the code problem. We specify from PGT, CGI, and ViewLux, with the price written before work starts. See Sliding & Patio Doors for the full scope.
Sliding Glass Door Replacement
Signs you need it
The door sticks mid-track, the frame is pitted or bowed, and you can feel air moving through the weatherstripping on a windy afternoon.
What it costs in Altadena
Sliding glass door replacement in Altadena typically runs $1,800 to $4,500, depending on size and glazing spec.
How we do it
We measure the existing opening, specify a Chapter 7A-compliant slider, remove the old frame, square and flash the rough opening, set the new door, and document the finished installation.
Impact Sliding Glass Doors
Signs you need it
The existing slider faces a canyon mouth or open yard with direct wind exposure, and you want a tested, impact-rated assembly that also passes plan-check.
What it costs in Altadena
Impact sliding glass doors in Altadena generally fall between $2,800 and $6,500, depending on panel count and glass spec.
How we do it
We survey the opening, specify the impact-rated slider from PGT or CGI, pull the permit, remove and reset the frame, and leave a written warranty for the assembly.
What Sliding & Patio Doors Costs in Altadena
| Item | Typical range in Altadena |
|---|---|
| Sliding glass door replacement | $1,800-$4,500 |
| Impact sliding glass door | $2,800-$6,500 |
| Screen door installation | $400-$1,000 |
Do patio doors in Altadena need fire-rated glass?
Yes, if the door is part of the building envelope in a Chapter 7A zone, which covers all of Altadena. Plan-checkers look for tempered or fire-rated glazing and ember-resistant frames.
Can you replace just the glass in a sliding door?
Sometimes, if the frame is square and sound, but most Altadena sliders we see need full frame replacement. Call (509) 265-6387 and we will tell you what the survey shows.
Impact Garage Doors in Altadena
A garage door faces the street, and in Altadena the street often faces the wind. A standard uninsulated steel door can deflect under Santa Ana gusts long before any window in the house sees stress, and ember intrusion through the garage is a documented fire-spread path in this community. Impact-rated or wind-load-rated garage doors are increasingly the default for post-Eaton Fire rebuilds and for homeowners who simply want the door to hold. We install from CWS and ViewLux lines, with a written price before any work starts. See Impact Garage Doors for details.
Wind-Load Code Compliance
Signs you need it
The existing garage door has visible bowing, rattles in the tracks during wind events, or the plan-checker has flagged the opening for non-compliance.
What it costs in Altadena
Wind-load-rated garage door replacement in Altadena usually runs $2,200 to $6,000, depending on size and track hardware.
How we do it
We measure the opening, specify a wind-load-rated door and track assembly, remove the old door, set the new one, and test the full travel cycle with documentation.
Garage Door Replacement
Signs you need it
Panels are dented or rusting, the door grinds on the track, or there is visible daylight at the top corners where embers could enter.
What it costs in Altadena
Standard garage door replacement in Altadena typically runs $1,500 to $4,200, with the written quote fixed from the measured survey.
How we do it
We survey the opening, specify the replacement door and hardware, remove the old system, hang and balance the new door, and document the final operation.
What Impact Garage Doors Costs in Altadena
| Item | Typical range in Altadena |
|---|---|
| Wind-load-rated garage door | $2,200-$6,000 |
| Standard garage door replacement | $1,500-$4,200 |
| Insulated garage door unit | $2,000-$5,500 |
Does a garage door affect fire safety in Altadena?
Yes. Embers enter garages through gaps and standard door seams, and Chapter 7A plan-checkers review garage door assemblies as part of the building envelope.
How long does a garage door replacement take?
Most Altadena garage door replacements finish in one day, with the permit and written quote handled before we arrive. Call (509) 265-6387 for a written estimate.
Custom & Geometric Windows in Altadena
Craftsman bungalows in Altadena carry distinctive sightlines: arched tops on porch windows, triangular gable glass, and half-round bathroom lights that standard replacement catalogs cannot touch. The post-Eaton Fire rebuilds are introducing even more custom geometry as architects design homes working with open sightlines and angled rooflines. We measure, template, and order custom and geometric windows that hold Chapter 7A glazing without losing the original character. See Custom & Geometric Windows for the full scope.
Arched & Curved Windows
Signs you need it
The original arched sash on a porch or gable is rotted or cracked, and a rectangular replacement would change the front elevation of your Craftsman.
What it costs in Altadena
Arched and curved custom windows in Altadena usually run $1,500 to $4,500 per unit, depending on radius and glazing.
How we do it
We template the opening with a physical pattern, specify the curved frame and fire-rated glazing, order the custom unit, then set and flash it to match the original sightline.
Oversized Openings
Signs you need it
The window opening is wider or taller than a standard production unit, and a mulled assembly of smaller windows would leave visible frame lines where the original glass ran unbroken.
What it costs in Altadena
Oversized custom windows in Altadena typically fall between $2,000 and $6,000 per unit, with the price fixed from the survey.
How we do it
We measure the full opening, calculate wind load and glazing requirements, specify a single custom unit, then install and document the finished installation.
What Custom & Geometric Windows Costs in Altadena
| Item | Typical range in Altadena |
|---|---|
| Arched or curved window | $1,500-$4,500 |
| Oversized custom window | $2,000-$6,000 |
| Geometric or shaped window | $1,200-$3,800 |
Can you match the original Craftsman window pattern in Altadena?
Yes. We template the original opening and order the curved or geometric sash to match the existing sightline, with Chapter 7A-compliant glazing inside the same profile.
Do custom windows take longer to get in Altadena?
Custom units usually add two to three weeks to the lead time. Call (509) 265-6387 and we will give you a written schedule along with the quote.
Brands We Service in Altadena
We specify from PGT, CGI, CWS, and ViewLux lines, chosen by performance tier and price range rather than margin. The survey determines which line fits your Altadena opening, and we stock common parts for faster turnarounds. See our brands for the full list.
Pricing for Windows & Doors in Altadena, CA
| Service | Typical range in Altadena |
|---|---|
| Window installation (per unit) | $600-$2,100 |
| Impact-resistant window | $800-$2,200 |
| Energy-efficient window | $650-$1,900 |
| Sliding glass door replacement | $1,800-$4,500 |
| Impact sliding glass door | $2,800-$6,500 |
| Impact garage door | $2,200-$6,000 |
| Custom geometric window | $1,200-$3,800 |
| Arched or curved window | $1,500-$4,500 |
What pushes price up in Altadena is the code: Chapter 7A fire-rated glazing, ember-resistant frames, and the LA County permit process all cost more than a basic replacement in an incorporated city. Our written quote reflects the measured survey, and it cannot change once work begins.
Neighborhoods We Serve in Altadena
We work across all of Altadena, from the hillside Craftsman streets near Eaton Canyon and Rubio Canyon to the mid-century ranch tracts through the central and eastern flats. Response time for a measured survey is usually within a few days, depending on the week’s schedule.
- Eaton Canyon area
- Rubio Canyon foothills
- Altadena Golf Course district
- Lake Avenue corridor
- Meadows at the west end
Service Area - Cities Near Altadena
We serve homeowners throughout the San Gabriel Valley corridor. From Altadena we cover Pasadena, CA to the east, South Pasadena, CA and San Gabriel, CA to the southeast, and Alhambra, CA further south. Scheduling is coordinated from the Los Angeles office, and local crews serve Altadena directly.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena 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 Altadena
Nearly all of them. Altadena is unincorporated, so LA County Building & Safety handles permits, and Chapter 7A fire-hardening requirements apply across the entire Very High Fire Hazard Severity Zone covering the community.
If the glass is single-pane or standard insulated without tempered or fire-rated labeling, the windows likely do not comply with Chapter 7A. Our measured survey shows what the code requires. Call (509) 265-6387 for a free estimate.
Most Altadena neighborhoods are not HOA-bound, but some rebuild standards and neighborhood guidelines set design limits. We work with whatever documentation your street requires and quote accordingly.
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 Altadena Customers Say
"Replaced eight windows. They showed me the U-factor on the units they were actually fitting rather than the brochure numbers."
- Kofi B."They photographed the rotten sill they found under the old frame before replacing it, and the extra cost was agreed in writing before they carried on."
- Rosalind C."Front door install went smoothly. Written warranty, clear price, no pressure to upgrade anything."
- Nils H.