Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterFast, Reliable Window Installation Across Los Angeles
Window installation in Los Angeles runs about $650 to $1,450 per opening for a standard dual-pane retrofit, and $1,200 to $2,800 per opening when the job requires Chapter 7A fire-rated units or full frame replacement on an older home. We serve every corner of the city, from Silver Lake to Chatsworth to the Crenshaw district, with crews who know exactly what LADBS expects before the first screw comes out. If you’re planning to replace windows in a 1920s Spanish Colonial or a 1950s Valley ranch, call (903) 354-7134 and we’ll walk you through what your specific parcel actually requires. You’ll get a written price before any work starts, no exceptions.
Why Westlight Windows & Doors Is Los Angeles’s Preferred Window Installation Company
We’ve been installing windows since 2009 as an independently owned and operated Kingswell location, and we’ve built our reputation in Los Angeles by answering the phone when it rings. A live person picks up 24 hours a day, seven days a week. No voicemail box, no chatbot, no “we’ll get back to you.” Homeowners who have been burned by a no-show contractor or a price that jumped at the door tell us that alone is worth the call.
Owen Satterfield leads our Los Angeles office, and he’s the one who set the rules every job follows: the written price comes first, the arrival window is real, the job site is left cleaner than we found it, and the guarantee is printed on paper and handed to you at completion. If our work fails within the guarantee period, we come back and fix it at no charge. That’s the 365-Day Done Right Promise, and it’s not a slogan. It’s what we write down.
Window Installers in Los Angeles
Window Installers in Los Angeles do more than swap glass. The job starts with figuring out what’s actually behind the old unit: the condition of the rough opening, the age of the wiring in the wall, whether the flashing ever worked. On a hillside parcel in a Very High Fire Hazard Severity Zone, it also means confirming the replacement window meets California Building Code Chapter 7A before it’s ordered, because an LADBS inspector will check. Standard vinyl double-panes don’t pass on those lots, and the special-order re-do can set a job back weeks.
What a Los Angeles Window Install Actually Involves
We remove the old unit, inspect the framing and flashing, replace any damaged jamb material, set and level the new window, flash it properly, and seal the opening so water never finds a path in. On retrofit jobs where the existing frame is sound, the process is faster and less invasive. On full-frame replacements, we pull the trim and old frame entirely, which is when we often find what the last installer covered up.
When LA Homeowners Call Us for Window Installation
Fogging between panes, sticky sash tracks, visible daylight through a closed window, or a room that won’t hold temperature in August. In Los Angeles, that last one is a year-round complaint. Roughly 284 sunny days a year means UV is beating on your glass constantly, and a failed seal shows up faster here than almost anywhere else in the country. A typical single-window retrofit in Los Angeles runs $650 to $1,450 installed, depending on size, glazing, and whether the parcel falls in a fire zone.
Casement Windows in Los Angeles
Casement Windows in Los Angeles are a natural fit for the city’s 1920s and 1930s housing stock because so many of those original steel units were casements. They hinge at the side and crank outward, which means they seal tighter than a double-hung when closed, an advantage when Santa Ana winds are pushing hot dry air against the house. Replacing them in a historic district means matching proportions and sightlines while meeting today’s Title 24 energy requirements, and that’s a job we’ve done from Silver Lake to Hancock Park to Los Feliz.
Replacing Original Steel Casements in Older LA Homes
The original steel casements in Spanish Colonial Revival and Craftsman homes are beautiful and brutally difficult to replicate. Modern options in fiberglass, aluminum-clad wood, or custom steel give you the same thin profile with dual-pane low-e glass that the old single panes never had. Expect to pay $1,400 to $2,800 per opening on these replacements, because they’re almost always full-frame jobs, not retrofits.
Casement Window Costs Across Los Angeles
A standard casement window replacement in Los Angeles runs $850 to $2,200 per opening for most homes. The range depends on whether we’re doing a retrofit into a sound existing frame or a full-frame replacement, the glazing package you choose, and whether your parcel sits in a VHFHSZ where Chapter 7A-rated units are mandatory. We stock lines from ES Windows, CWS, and ECO Window Systems, so matching a specific style doesn’t mean waiting on a long special order.
Trusted Brands We Service in Los Angeles
We install products from eight manufacturer lines, including CGI for impact-rated applications, ES Windows for custom aluminum and wood-clad work, and ECO Window Systems for energy performance that clears Title 24 without fuss. Because we carry that many lines, we’re not going to force your Los Angeles home into a window that doesn’t fit the architecture or the fire code. We spec the right product for the parcel and the house, and we order it before the job is on the calendar, so you’re not waiting weeks with a boarded-up opening. For more on the full range of what we offer, see our Window Installation service page.
Common Window Installation Problems We See in Los Angeles Homes
- Chapter 7A violations on hillside parcels. Contractors install standard dual-pane units on a VHFHSZ lot, the LADBS inspector checks the glazing stamp, and the project fails. The homeowner is stuck paying for special-order fire-rated units and a second install. We spec the correct window before the sale closes, so this never happens.
- Failed original waterproofing behind steel casements. Homes in Silver Lake, Echo Park, and Hancock Park often have flashing that gave up decades ago, and the jamb is slowly rotting. A new window set into a bad opening leaks within a season. We address the framing and flashing before the new unit goes in.
- Cloth wiring inside rough openings. 1920s and 1930s homes frequently have original cloth-insulated electrical running right through the wall cavity where we work. Opening that wall can trigger code upgrades. We write allowances into the contract so the price doesn’t move without your signature.
- UV-degraded vinyl frames and failed seals. Los Angeles’s intense sun breaks down cheap vinyl and factory tints faster than manufacturers expect. The marine layer near Santa Monica and Venice adds salt corrosion on aluminum frames and hardware. Choosing a material rated for this climate, not a generic one, is the difference between a 10-year window and a 25-year window.
Pricing for Window Installation in Los Angeles, CA
Most single-window replacement jobs in Los Angeles fall between $650 and $2,800 per opening, installed. The low end covers a standard retrofit dual-pane in a sound frame. The high end covers full-frame replacement with fire-rated glazing, custom sizing, or a casement upgrade in a historic home. Bay and bow windows, garden windows, and 3-panel sliders run higher because of structural work and additional glass area. What moves the number is old framing that needs replacement, VHFHSZ Chapter 7A compliance, and the glazing package. You’ll always see the written price before we start. Call (903) 354-7134 for a free estimate and we’ll put it on paper.
We Also Serve Cities Near Los Angeles
Our crews work throughout Southern California, including Huntington Park, South Gate, Bell, and Maywood. If you’re just outside the city line, the same pricing, the same guarantee, and the same written-price-before-work rule applies. Read more about the areas we cover on our Window Installation in Los Angeles page.
Serving Los Angeles, CA - Our Local Coverage Area
We’re based in the Los Angeles 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 Los Angeles
Yes. If your parcel is inside a state-designated VHFHSZ, which covers large portions of the Hollywood Hills, Sylmar, Chatsworth, Pacific Palisades, and the foothill communities, LADBS requires replacement windows and doors to meet California Building Code Chapter 7A. That means tempered or fire-rated glazing and rated frames, not standard residential vinyl double-panes. An inspector will verify the stamp at final inspection. Call (903) 354-7134 and we’ll check your parcel and spec the correct unit before you spend a dollar.
We can match the sightlines, the proportions, and the operation with modern units that carry dual-pane low-e insulated glass, and we’ve done it on 1920s and 1930s homes across Silver Lake, Los Feliz, and Hancock Park. Full-frame replacement with a custom casement typically runs $1,400 to $2,800 per opening in Los Angeles, depending on material and glazing. The original waterproofing and framing almost always need attention too, and we’ll price that in writing before demo starts.
We put a framing and flashing allowance into the contract before we start, so when our crew opens a jamb on a 1928 Spanish Colonial and finds undersized framing, failed waterproofing, or cloth wiring, the fix is already priced and the upgrade is approved in writing before we touch it. That’s standard Westlight practice on every Los Angeles job. You’re never surprised by a change order at the door, and you never pay for work you didn’t approve first.
LADBS requires a permit for nearly all window replacements in the city, and on any hillside parcel flagged as VHFHSZ, the inspector will specifically check Chapter 7A compliance on the glazing and frames. A contractor who skips the permit is setting you up for a failed inspection, a stop-work notice, and a costly special-order re-do. We pull permits, schedule inspections, and make sure every opening passes the first time.
We do. Impact-rated glazing with laminated interlayers is standard for Chapter 7A compliance on VHFHSZ parcels, and it also gives you better sound attenuation and break-in resistance, which matters on busy corridors and hillside streets. We install CGI impact-rated products along with ES Windows and CWS units, and we’ll tell you plainly whether your parcel requires the rating or it’s an upgrade you can choose. Call (903) 354-7134 for a free estimate and a written price.
Written by Owen Satterfield, Owner at Westlight Windows & Doors, serving Los Angeles since 2009.