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 Berkeley, CA
Berkeley window and door work is different from the rest of the East Bay because the city’s housing stock is old, often historically protected, and constantly stressed by the marine fog cycle. Most flatlands homes were built between 1895 and 1930 with original single-pane wood sashes, and many hills homes rebuilt after the 1991 fire face strict fire-resistance glazing rules. If you need replacement windows, new-construction window installation, or entry doors in Berkeley, call (903) 354-7134 and we’ll give you a written price before any work begins.
Why Berkeley Homes Are Different
The Berkeley flatlands are dominated by Craftsman bungalows and Arts & Crafts brown shingle homes, nearly all of which still have their original wood double-hung or casement windows. Those frames are often 100 years old and, thanks to the daily marine fog that rolls through Strawberry Canyon and settles on the west side of the city, they cycle through wet and dry almost every single day. That repeated wet-dry stress is what causes chronic rot, swelling, and frames that bind shut by August. It is a slow failure, but when it shows up, it usually means the sash and the frame both need to go.
Berkeley’s flatlands also carry a heavy concentration of locally designated historic structures. Many replacement window projects there need review by the Landmarks Preservation Commission to keep the original wood-sash profiles and true divided lights. At the same time, California Title 24 energy code requires double-pane glazing. That tension between preserving a 1920s appearance and meeting modern energy rules shapes nearly every flatlands window job in Berkeley. Half a mile up the hill, the code universe changes entirely: homes above the 1991 fire scar sit in California’s Very High Fire Hazard Severity Zone, where glazing typically must be dual-pane tempered or fire-rated. A flatlands job and a hills job can have entirely different product requirements, even though they’re in the same city.
Our Main Berkeley Services
Berkeley homeowners most often call us for two things: replacing failing original wood windows, and installing new windows or doors during a remodel or addition. Each has its own page where you’ll find Berkeley-specific pricing, timelines, and code considerations.
Window Replacement in Berkeley
Replacing windows in Berkeley means working around old framing, historic district review, and sometimes fire-zone glazing rules, depending on where you live. We measure every opening before we order, carry eight manufacturer lines so we can match the right product to the job, and put your price in writing before any work starts. Most flatlands replacements are straightforward swaps, but hills homes often need tempered or fire-rated glass that narrows the options. Read the full breakdown on our Window Replacement in Berkeley page.
Window Installation in Berkeley
New-construction window installation in Berkeley often comes with an extra set of rules, whether it is a full remodel on a flatlands Craftsman or a hills rebuild with WUI requirements. We install windows from eight manufacturer lines, including impact-rated PGT and energy-efficient ECO Window Systems, and we handle the flashing, leveling, and sealing the way the building inspector wants to see it. Your written price covers the job before the first screw turns. Details are on the Window Installation in Berkeley page.
Door Installation in Berkeley
Front doors and back doors in Berkeley take a beating from fog moisture and old framing, and entry doors on homes built before 1930 almost never have a standard rough opening anymore. We install entry doors, patio doors, and glazed doors, including trusted Therma-Tru entry doors that hold up to the marine climate. We measure, order, and level every door to operate cleanly through Berkeley’s wet winters and cool summers. See the full scope on our Door Installation in Berkeley 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 Berkeley
We install windows and doors from eight manufacturer lines, including impact-rated PGT and CGI, CWS, and ES Windows. That selection matters in Berkeley because a flatlands bungalow and a hills fire-zone home need entirely different glazing. See what’s stocked and what’s orderable on our brands page.
Pricing for Window Company in Berkeley, CA
These are the ranges we typically see on Berkeley jobs, based on product line, opening size, and code requirements. Every customer gets a written, line-item price before any work starts.
| Service | Typical range in Berkeley |
|---|---|
| Single-window replacement (standard double-hung, flatlands) | $700 - $1,200 installed |
| Single-window replacement (fire-rated or tempered, hills) | $1,100 - $2,000 installed |
| Full-flat bungalow window replacement (8-12 windows) | $9,000 - $18,000 installed |
| New-construction window installation (per opening) | $850 - $1,500 installed |
| Custom wood-sash replica window (historic districts) | $1,800 - $3,200 installed |
| Entry door replacement (standard 36″ x 80″) | $1,200 - $2,500 installed |
| Entry door replacement (custom or oversized) | $2,500 - $5,000 installed |
| Patio or glazed door installation | $2,000 - $4,500 installed |
| Dual-pane retrofit with LPC review coordination | Adds $400 - $900 to project cost |
What pushes a Berkeley price up is almost always the code: hills fire-zone glazing adds real cost per opening, and flatlands LPC review for historically designated homes adds coordination time and sometimes custom sash work. Whatever the job, the price we give you before the work starts is the price you pay – no door-step revisions, no change orders you didn’t approve in writing.
Neighborhoods We Serve in Berkeley
We work across Berkeley’s flatlands and hills, from the fog-heavy west side near the bay up through the fire-zone neighborhoods above campus. Response times typically run one to three business days for estimates, depending on where you are and how many jobs are on the board.
- Elmwood and Claremont
- North Berkeley and the Gourmet Ghetto
- South Berkeley and Ashby
- Berkeley Hills and the 1991 fire scar rebuilds
- West Berkeley and the Marina
Service Area – Cities Near Berkeley
We also serve homeowners in the surrounding East Bay communities. If you’re just over the border, you’ll find the same written pricing and the same Kingswell Guarantee on every job. See Emeryville, CA, Albany, CA, El Cerrito, CA, or Piedmont, CA for details in those cities.
Serving Berkeley, CA - Our Local Coverage Area
We’re based in the Berkeley 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 Berkeley
Most like-for-like window replacements in Berkeley don’t need a building permit, but any home in a locally designated historic district may need Landmarks Preservation Commission review first, and hills homes may need fire-zone compliance documentation. We’ll tell you exactly what applies to your address during the estimate. Call (903) 354-7134.
We schedule estimates for Berkeley homes within one to three business days from your call. Our team is dispatched from the brand’s San Francisco Bay Area office, and a live person answers the phone around the clock to book the visit. Call (903) 354-7134 for a free estimate.
No. You receive a written price before any work begins, and that price holds unless you approve a change order in writing first. This is the Kingswell Guarantee, and it applies to every Berkeley job. Call (903) 354-7134 to get your written quote.
Call (903) 354-7134 to schedule your free estimate, or reach out through our home page to see more about how we work. Westlight Windows & Doors is led by Owen Satterfield, and every Berkeley job is backed by the Kingswell Guarantee and the 365-Day Done Right Promise.
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 Berkeley Customers Say
"Got quotes from three companies. Westlight wasn't the cheapest but they were the only one who measured everything carefully and put it all in writing. Worth it. No surprises on install day."
- Craig Dillard"Our sliding patio door had come off its track years ago and we just lived with it. New one is smooth as butter. They hauled off the old one and vacuumed up before they left."
- Jessica Landry"Replaced eight drafty old windows that were basically single pane. The house is warmer already and the street noise is way down. Crew was on time both days and the price was exactly the quote."
- Harold Bemis