Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in Westmont, CA
Juniper Windows & Doors is the window company Westmont homeowners call when they want a written price before any work begins. We handle window replacement, window installation, and door replacement across Westmont, from the streets around Chester L Washington Elementary to the blocks south of Century Boulevard. Homes here were largely built between the 1940s and 1970s, which means original wood sashes, single-pane glass, and doors that have warped through decades of Southern California sun. If you’re pricing out new windows in Westmont, call (682) 281-2168 and we’ll give you real numbers, not a vague “we’ll see when we get there.”
Why Westmont Homes Are Different
Westmont sits in the unincorporated pocket of Los Angeles County just east of Inglewood and north of Hawthorne, and the housing stock tells a very specific story. Most homes are mid-century ranch-style or single-story stucco builds from the 1950s and 60s. That era of construction used single-pane aluminum-frame windows and hollow-core doors, neither of which was ever meant to last 60 years under this much direct sun.
The bigger factor is the marine layer. Westmont sits about seven miles inland from the coast, far enough that the morning overcast burns off by 10 a.m., but close enough that moisture settles on window tracks and door thresholds overnight. We routinely see aluminum window frames in Westmont with pitted, oxidized corners where that damp air collected for years. It’s not a defect in the house. It’s what this specific microclimate does to metal frames. Homeowners replacing those windows often move to vinyl or impact-rated glass specifically because they’re tired of the corrosion.
Permitting is another Westmont reality. As an unincorporated area, projects are reviewed by Los Angeles County rather than a city building department. Window replacement that keeps the same opening size generally doesn’t need a permit, but anything that changes rough openings or structural headers around a door does. We’re familiar with the county process and can tell you before you sign whether your job needs a permit pulled.
Our Main Westmont Services
These are the three jobs Westmont homeowners call us about most. Each one has its own page with Westmont-specific pricing and timelines.
Window Replacement in Westmont
Replacing old windows in Westmont usually means pulling out single-pane aluminum and putting in dual-pane, low-E glass that actually blocks the afternoon heat. The houses here were framed for standard sizes, but 70 years of settling means openings are rarely perfectly square, which is why we measure every opening to the eighth of an inch before ordering. You can read the full Westmont breakdown on the Window Replacement in Westmont page.
Window Installation in Westmont
New-construction and remodel window installs in Westmont come with county inspection requirements and rough-opening prep that replacement work doesn’t. If you’re adding a room, converting a garage, or redoing an exterior wall, the framing has to be right before the window goes anywhere near it. We coordinate that sequence with your contractor. See the Window Installation in Westmont page for the full scope.
Door Replacement in Westmont
Doors in Westmont take a beating from the sun on the west-facing walls, and the original 1950s hollow-core slabs don’t insulate or seal anymore. We replace them with properly hung, weather-stripped exterior doors and pre-hung interior units. Threshold rot at the sill is common here, and we rebuild it when we find it. Details are on the Door Replacement in Westmont page.
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.
Brands We Service in Westmont
We carry and service the product lines that make sense for Westmont’s climate: PGT, CGI, and CWS are the three we lean on most for impact-rated and high-wind applications, with ES Windows available for larger custom openings. Parts are stocked locally in our Los Angeles distribution hub, not shipped from the East Coast, so we’re not quoting you a window that takes six weeks to arrive. Browse everything we carry on our brands page.
Pricing for Window Company in Westmont, CA
Here are honest, usable ranges for the most common Westmont window and door jobs. These are ballpark figures that assume a standard-sized opening and no hidden structural surprises. Every project gets a written, line-item price before you approve anything, so there’s no version of this where the number changes at the door.
| Service | Typical range in Westmont |
|---|---|
| Standard window replacement (per window) | $450 – $900 |
| Impact-rated window replacement (per window) | $800 – $1,600 |
| Full-home window replacement (8 – 12 windows) | $5,500 – $14,000 |
| New-construction window installation (per window) | $300 – $700 labor |
| Exterior door replacement (slab + hardware) | $900 – $2,200 |
| Pre-hung exterior door replacement | $1,400 – $3,200 |
| Impact-rated door replacement | $2,200 – $4,800 |
| Interior door replacement (per door) | $350 – $750 |
| Sliding glass door replacement | $1,800 – $4,500 |
| Threshold and sill rebuild | $250 – $600 |
What pushes Westmont prices up? Two things, mostly. First, rough openings that need correcting after decades of settling add labor hours. Second, impact-rated glass costs more up front, though it earns itself back through durability and, in some cases, lower energy cost. The written quote you get from us already accounts for whatever the job actually needs. That’s the entire point.
Neighborhoods We Serve in Westmont
We work all over Westmont, and our crews know the streets well enough that we don’t get lost in the cul-de-sac pockets west of Vermont Avenue. Response time for estimates in Westmont is typically same-week, with installation scheduling handled in writing before you commit.
- The blocks around Chester L Washington Elementary
- Neighborhoods off Century Boulevard between Vermont and Western
- Streets north of Imperial Highway
- South of 104th Street near the county line
- West of the 110 Freeway corridor
Service Area – Cities Near Westmont
Juniper serves all of LA County and beyond from our Los Angeles dispatch office. If you’re in Los Angeles, CA, we’re already nearby. We also handle window and door work across Southern California in San Diego, CA, San Jose, CA, and San Francisco, CA.
Serving Westmont, CA - Our Local Coverage Area
We’re based in the Westmont 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 Company in Westmont
Most Westmont estimate visits are scheduled within the same week you call. Once the quote is written, your installation date is set in writing too. Call (682) 281-2168 and we’ll give you a specific time, not a four-hour window.
Straight window replacement that keeps the same opening size generally does not need a permit in Westmont. Door replacements that alter the rough opening or structural header do. We’ll confirm for your specific job before starting. Call (682) 281-2168 for a straight answer.
Yes. Some Westmont neighborhoods have architectural review requirements for window styles or door colors. We’ll note what your HOA requires and build it into the written quote so there’s no conflict after the work is done. Call (682) 281-2168 with your HOA checklist handy.
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 Westmont Customers Say
"Front door looks great and shuts well. The threshold is sealed well and the lock lines up with the strike."
- Rory F."Quote came in the app with options for glass. Easy to compare."
- Vera L."Door replacement. Installer texted when on his way and finished by lunch. Tight and clean."
- Neil B.