Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Willowbrook
Window installation in Willowbrook runs $850 to $2,900 per opening for most mid-range vinyl and aluminum units, and a full-home replacement on a 1950s stucco ranch typically lands between $9,000 and $22,000. We work throughout Willowbrook, from the blocks around Willowbrook Avenue down to El Segundo Boulevard, and our crews are familiar with the older stucco homes that dominate this part of unincorporated LA County. Call (817) 686-2228 and we’ll walk you through what your project actually needs, in writing, before any work begins.

Why Meridian Windows & Doors Is Willowbrook’s Preferred Window Installation Company
Willowbrook homeowners don’t hire a window crew because they like shopping for windows. They hire us because they’ve been burned by no-shows or quotes that moved once the wall was opened. Our Window Installation team operates under The Garrison Code: background-checked, uniformed technicians arrive on time, put the scope and price on paper before work starts, and stand behind every install with a written 365-day guarantee. If something fails within that year, we come back and fix it at no charge. That promise is in writing on every job, and it’s the reason our Willowbrook customers keep our number in their phones.
We’re part of the Garrison Partners family, held to The Garrison Standard since 2009. We carry eight manufacturer lines so we’re not forcing one brand into every opening, and we coordinate scheduling and dispatch from our Los Angeles office so crew arrival in Willowbrook is a matter of a short drive, not a day-long wait. When you call, a live person answers, every time, any hour.
Bay Window Installation in Willowbrook
Bay Window Installation in Willowbrook means building out from the wall plane, not just swapping a sash, and on older stucco homes that almost always means framing work, flashing, and a stucco repair plan before the new unit goes in. A true bay window installation in Willowbrook starts around $2,200 and runs up to $6,500 or more depending on the seat depth, roof or no roof, and whether the opening needs structural reinforcement. Because most Willowbrook homes date to the 1940s and 1950s, we scope the jamb and header condition before quoting, not after the wall is open.
Frame condition before glass selection
We check the rim joist and existing header before recommending any bay unit. If the opening carries roof load, the header gets sized first. Glass style comes second.
Seat boards and stucco tie-in
The bay seat needs to be built, flashed, and sealed into the existing stucco or siding. We cut stucco back clean, install flashing, and patch to match so the new projection looks original to the house.
Window Contractor in Willowbrook
Choosing a Window Contractor in Willowbrook means understanding that most homes here are unincorporated LA County stucco ranches, so the contractor you pick should know county permit rules and old-frame conditions without you having to explain them. We hold the permit, schedule the county inspection, and show up with the right crew. For a standard double-hung or slider swap, Willowbrook labor generally runs $400 to $750 per opening. A bay or garden window job runs higher because it involves framing and stucco work.
Permits handled by us
Unincorporated Willowbrook pulls window permits from LA County Building & Safety, not a city hall. We file the paperwork, meet the inspector on site, and hand you a closed permit at the end. You won’t be chasing a county office.
Written pricing before we start
The number we hand you is the number the job costs. If we open a jamb and find rot, we stop, show you photos, and give you a written change order before touching anything else. No surprise at the final invoice.

Trusted Brands We Service in Willowbrook
We stock and install PGT, CGI, and CWS units for Willowbrook customers, and because our Los Angeles warehouse is close, the turnaround on orders is fast. PGT and CGI are the go-to choices for impact-rated glass, which matters on Willowbrook’s west-facing walls where afternoon sun pounds the glass from May through October. CWS gives us a solid mid-range vinyl option when budget matters more than impact rating. We keep common sizes and parts on hand so a broken operator or balance doesn’t mean weeks of waiting.
Common Window Installation Problems We See in Willowbrook Homes
- Rotted framing behind original aluminum windows. Willowbrook’s 1950s stucco ranches were built with minimal flashing. When we pull the old nail fin, we often find soft wood that needs replacement before the new unit can be set properly.
- Missing permits on previous work. Because Willowbrook is unincorporated, some past installs were done without county approval. We fix the paperwork trail when we do the new install, bringing everything up to current LA County code.
- West-facing glass that never should have been spec’d clear. Inland Willowbrook heat means a clear single-pane or even a low-e single-pane west window bakes the room. We spec laminated or low-e insulated glass on those exposures, and we quote it before the deposit.
- Stucco patching that catches homeowners off guard. A straight swap quote that doesn’t include stucco repair around the jamb leaves a mess and an extra bill. We include it in the written scope from day one.
Pricing for Window Installation in Willowbrook, CA
A standard single- or double-hung replacement in Willowbrook runs $850 to $1,800 installed per window. Horizontal sliders fall in the same range, closer to $900 to $1,400. Casement and awning units run $1,100 to $2,300. Bay and bow windows, since they require framing and stucco, start at $2,200 and reach $6,500 plus. A full-house job on a three-bedroom stucco ranch with ten to fourteen openings usually lands between $9,000 and $22,000. The three things that move the number are glass package, jamb condition, and stucco repair scope. Call (817) 686-2228 and we’ll put your exact number on paper before any work starts. The estimate is free.
We Also Serve Cities Near Willowbrook
Beyond Willowbrook, our crews cover Los Angeles, San Diego, San Jose, and San Francisco for full window and door installation. If you’re just over the county line or managing a property in one of these nearby markets, the same written pricing and 365-day guarantee apply.
Serving Willowbrook, CA - Our Local Coverage Area
We’re based in the Willowbrook 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 Willowbrook
Yes, in most cases you do. Willowbrook is unincorporated LA County, so permits come from LA County Building & Safety, not a city department. We pull the permit, handle the inspection, and close it out for you. Call (817) 686-2228 and we’ll confirm what your specific project requires.
We install and service eight manufacturer lines, and the ones most common in Willowbrook are PGT, CGI, and CWS. For impact and west-facing heat issues, we typically recommend PGT or CGI. CWS is often the right call for mid-range vinyl. We’ll spec the right brand for the opening, not the one sitting in the warehouse.
Yes, impact-rated windows with a quality low-E coating typically cut cooling costs by 20 to 30 percent on Willowbrook homes because they block a meaningful share of the solar heat that comes through west and south glass. The insulated glass unit is what does the work, not just the impact layer. Call (817) 686-2228 for an honest read on what your specific exposure needs.
Only what we find behind the wall that we could not see before opening it. That means rotted framing, missing flashing, termite damage, or unexpected stucco failure. We photograph everything, show you the condition, and give you a written change order before proceeding. You approve it or we don’t do the work.
Most single-room projects finish in one to two days. A full-home replacement on a typical Willowbrook stucco ranch runs three to five working days, including stucco patch and trim. Permit inspection scheduling can add a few days depending on the county inspector’s calendar. We’ll give you a written schedule before we start.
If you want a straight answer on what your Willowbrook window job will cost and what it will take, call (817) 686-2228. You’ll get a live person, a written price, and a guaranteed date on the calendar. That’s how we run every install in Willowbrook.
Written by Elliot Vance, Owner at Meridian Windows & Doors, serving Willowbrook since 2009.










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