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Fast, Reliable Window Installation Across Los Angeles
Window installation in Los Angeles comes with a set of rules most homeowners don’t discover until a job goes sideways. Title 24 energy thresholds, hillside fire-zone glazing, stucco rough openings that hide water damage for months, and tight lots where staging the job is half the battle. We’ve worked these conditions across Los Angeles, and we quote them accurately the first time. If you’re planning a window replacement in the 90001 area or anywhere across the city, call us at (888) 635-0804 and we’ll talk through what your house actually needs, not what a catalog says it should get.
Why TruePane Windows & Doors Is Los Angeles’s Preferred Window Installation Company
TruePane Windows & Doors started with a second-generation glazier, Dale Kessler, who set a rule that still governs every install: if the pane is not true, the job is not done. That matters in Los Angeles, where a 1930s bungalow in South Los Angeles demands the same care as a hillside home in a fire zone. Our background-checked, uniformed technicians measure every opening twice and register both manufacturer warranty layers in writing before the truck leaves the driveway. Nothing is left to a handshake.
Los Angeles homeowners have learned to read the fine print. We put ours on the table. The Done Right Promise means that if the work isn’t right, we fix it without paperwork fights. The Keystone Standard means the warranty durations are written down, not described vaguely over the phone. And when our crews work near a shared wall in a 90001 courtyard apartment or a craftsman home off a narrow street, noise stays within LADBS work-hour limits. That’s not a marketing line. It’s how we keep neighbors from calling their council office and how we keep the job moving.
Our Window Installation Services in Los Angeles
We replace windows in every housing type Los Angeles throws at us, from 1920s Spanish Revival to midcentury stucco boxes. These are the services Los Angeles homeowners ask about most. For the full range of what we do, see our Window Installation page.
Casement Windows
Casement windows are common in the older bungalows across South and Central Los Angeles. The originals were often steel frames set into stucco. Over thirty or forty years, the steel corrodes, the crank hardware strips, and the whole unit loses its seal. We replace them with modern low-E casement units that meet Title 24 SHGC requirements for Climate Zones 9 and 10, and we re-flash the rough opening properly because the old flashing is usually the first thing to fail. A typical casement replacement in Los Angeles runs $650 to $1,400 per window depending on size and whether the stucco needs repair around the jambs.

Fixed & Picture Windows
Los Angeles homes use a lot of fixed glass, especially in the Spanish Colonial Revival homes built between 1920 and 1940. These are the windows with arched tops or decorative shapes that don’t fit off-the-shelf sashes. We order custom-sized insulated glass units and set them into the existing opening with fresh flashing and back-dam detailing. In neighborhoods like those around 90001, a fixed window replacement typically costs $500 to $1,100 per unit. The custom arch work runs higher because the glass is cut to the exact radius of the opening.

Garden & Basement Windows
Garden windows stick out from the wall and create a small greenhouse ledge. In Los Angeles, they’re popular in kitchens across the bungalow belt, but they fail in predictable ways: the seal along the bottom glass breaks down under constant UV exposure, and the frame sags from heat cycling. Basement windows, common in the hillside homes around Hollywood Hills and Brentwood, face a different problem: they sit at grade and take water from every rain event. We replace both with code-compliant units and pay close attention to the flashing, because in stucco-clad Los Angeles houses, a hidden leak is a months-long problem before it becomes a visible one. Garden window replacement in Los Angeles runs $1,200 to $2,800. Basement window replacement runs $450 to $1,100.

Single & Double Hung
Double-hung windows are the workhorse of the 1930s-1950s stucco bungalow stock across Los Angeles. The original wood sashes shrink and check during the long dry season, then swell when winter rains arrive. The result is a window that sticks in July and leaks in January. We install new single and double hung units with durable vinyl or fiberglass frames that don’t move with the humidity, with pricing from $550 to $1,250 per window in Los Angeles, including proper re-flashing and stucco repair at the opening.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Los Angeles
We’re an authorized installer for more than a dozen manufacturer lines, and for Los Angeles homeowners that matters because Title 24 compliance narrows the field. We regularly install Milgard low-E insulated units for their SHGC performance under LA’s UV-heavy sun. ES Windows and ECO Window Systems also show up in our Los Angeles quotes for their thermal performance and frame durability. We quote side by side on paper so you see the actual numbers, not a salesman’s summary. Stock and parts for these lines move through our Los Angeles supply chain quickly, which keeps lead times short for customers across the city.
Common Window Installation Problems We See in Los Angeles Homes
- Improper flashing at the stucco rough opening. Stucco is a rain screen, not a waterproofing layer. If the flashing and back-dam aren’t done right, water gets in behind the stucco and sits there for months. The first visible sign is usually a stain or bubbling paint the spring after a wet winter. We strip the opening, inspect the substrate, and rebuild the flashing detail properly.
- Standard double-hungs shoehorned into arched Spanish Colonial openings. National installers sometimes force a rectangular window into an arched opening with oversize trim. It looks wrong, and it breaks the stucco profile that gives the house its character. We custom-order glass and frames that match the original opening radius.
- Ignoring the Very High Fire Hazard Severity Zone requirement. Hillside homes from Hollywood Hills to Brentwood and Sunland-Tujunga fall under LA County’s fire zone rules. The California Building Code requires tempered or fire-rated glazing in these zones, and LADBS enforces it on permitted replacements. Contractors who don’t work Los Angeles hillsides regularly miss this and fail inspection. We don’t.
- Corroded original steel casements in 1920s-1940s homes. The steel frames rust, the putty fails, and the single pane conducts heat straight into the house. In 90001 courtyard apartments, we’ve pulled out steel casements that were literally holding themselves together with paint. The fix is a full replacement with a modern low-E casement, done with the stucco work the job requires.
Pricing for Window Installation in Los Angeles, CA
Here’s honest Los Angeles money. Casement windows in Los Angeles run $650 to $1,400 per unit installed. Fixed and picture windows run $500 to $1,100, more if the opening is arched. Double hungs run $550 to $1,250. Garden windows run $1,200 to $2,800. Basement windows run $450 to $1,100. What moves the number: custom sizing for old rough openings, stucco repair around the jamb, whether the home is in a fire zone that requires tempered glass, and access. A tight Los Angeles lot where we can’t stage within twenty feet of the opening adds labor, not because we’re padding the bill but because someone has to carry the units farther. We quote fixed prices. No change orders. If the site conditions are unknown until we open the wall, we tell you that before we open it, not after. Estimates are free. Call (888) 635-0804 and we’ll come measure, twice.
We Also Serve Cities Near Los Angeles
Our crews regularly handle window installation in Los Angeles and the surrounding communities, including Huntington Park, South Gate, Bell, and Maywood. The housing stock is similar across the area, which means the Title 24 requirements and the stucco opening details don’t change. The quote process doesn’t either. One phone call covers it.
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 - Window Installation in Los Angeles
Yes, in most cases. Los Angeles Department of Building and Safety requires permits for window replacement when the rough opening changes or when the work involves structural alterations. Simple sash replacements in existing openings sometimes fall under a lower threshold, but anything involving stucco removal around the jamb or changes to the opening size will likely need LADBS review. We pull permits and handle inspections for Los Angeles jobs. It’s part of the price we quote, not a surprise line item. Call (888) 635-0804 to find out what your specific job requires.
Los Angeles falls into Climate Zones 9 and 10 under California’s Title 24 building efficiency standards, depending on exactly where the house sits. For most replacement windows in these zones, the maximum Solar Heat Gain Coefficient is 0.25 in Zone 9 and 0.23 in Zone 10, which disqualifies a lot of standard single-pane stock sold in other states. Low-e dual-pane glazing is the practical requirement. We quote only compliant units, and we’ll show you the SHGC and U-factor numbers on paper for each window line. Call (888) 635-0804 and we’ll run the numbers for your address.
Yes. We custom-order curved glass and frames cut to the exact radius of your existing opening. This is not a workaround with oversize trim. We remove the old glazing, restore the stucco profile, and set the new unit so the arch reads clean and original. We’ve done this repeatedly across the Spanish Revival stock in Los Angeles neighborhoods built between 1920 and 1940, and we can show you what the finished opening looks like before you commit. Call (888) 635-0804 to schedule a free measurement.
We stage materials in a single parking space and coordinate deliveries to avoid blocking a neighbor’s driveway. For shared-wall properties like courtyard apartments in 90001, we post party-wall notices ahead of the work and run tools only within LADBS work-hour limits. Our crews are used to working six feet from someone else’s window, and they run the job so the neighbors don’t call the city. In one 90001 courtyard apartment job, we replaced corroded steel casements with Milgard low-E units, removed stucco carefully around each jamb, installed flashing tape and back-dam, re-stuccoed, and kept the whole job inside a single parking space. The property manager had no complaints from tenants when we finished. Call (888) 635-0804 if your lot is tight, because access affects the quote and we’d rather see it in person before we price it.
Homes in Los Angeles’s designated Very High Fire Hazard Severity Zones require fire-rated or tempered glazing under the California Building Code. LADBS enforces this on permitted replacements. The zones cover hillside communities from Hollywood Hills to Brentwood and Sunland-Tujunga, and plenty of homeowners find out about the requirement for the first time when an inspection fails. We factor fire-rated glazing into the quote from the start, so the number you sign off on is the number you pay. Call (888) 635-0804 and we’ll check your zone and your glazing requirements before the first window comes out.
Contact TruePane Windows & Doors in Los Angeles
If you’re ready to price a window installation in Los Angeles, call us at (888) 635-0804. A live person answers, day or night. We’ll schedule a free estimate, measure twice, and put the numbers on paper with the warranty terms written out. No callbacks left hanging, no second appointment without a reason. We’ll be there when we say.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Los Angeles since 2008.



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