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Window Company in Moraga, CA
Window and door work in Moraga comes with a set of conditions you won’t find in Lafayette or Walnut Creek. Most homes here were built between the 1960s and 1980s, and many still carry original aluminum-frame sliders and single-pane picture windows that fight the inland valley heat and fail CAL FIRE’s wildfire-hazard standards. We replace and install windows and doors across Moraga with written pricing before any work starts, a committed arrival window, and a guarantee in writing when the job is done. Call (903) 354-7134 for a free estimate.
Why Moraga Homes Are Different
Moraga sits in a sheltered inland valley where summer temperatures climb to 95-105°F and nights drop far enough that the temperature swing works against window seals year after year. That diurnal range is hard on insulated glass units, and we regularly see fogging between panes on homes along Moraga Way and Rheem Boulevard where original windows have thermally cycled for four decades. Morning ground fog that settles in the valley adds moisture stress to door thresholds and weatherstripping too, which is why entry door failures here often start at the sill rather than the hinges.
Then there’s the fire zone. Nearly all of Moraga is designated by CAL FIRE as a Very High Fire Hazard Severity Zone, which means window and door replacements on renovated or rebuilt homes must meet California’s fire-hazard construction standards. For homeowners along the hillside streets toward Canyon Road and the Las Trampas hills, we’ve helped close sales and renew insurance policies by replacing old sliding glass doors and large fixed windows with tempered, multi-pane, fire-rated units. That’s a compliance job as much as an energy upgrade, and it’s the single biggest reason Moraga work differs from the coastal towns just over the ridge.
Our Main Moraga Services
Most Moraga homeowners call us for one of three jobs: replacing failing windows, installing new windows in additions or remodels, or putting in a new entry or patio door. Here’s what each looks like in Moraga.
Window Replacement in Moraga
Replacement work in Moraga usually means pulling out 1960s and 1970s aluminum-frame windows that leak conditioned air and don’t meet current fire-hardening requirements. We measure each opening, confirm the glazing spec with the homeowner, and handle the product order through our eight stocked manufacturer lines. Homes near the open space edges often need tempered or fire-rated glass, and we document every spec so the paperwork is ready for the insurer or a pending home sale. Window Replacement in Moraga covers full pricing and what to expect.

Window Installation in Moraga
New construction and addition work in Moraga goes through Contra Costa County permitting, and window installation specs depend on whether the home is in the VHFHSZ overlay, which nearly all of Moraga is. We install products from PGT, CGI, ECO Window Systems, and others, and our crews handle the full scope: rough opening prep, flashing, shimming, squaring, and finishing. For hillside homes near Las Trampas, wind loads and exposure can shift product choices. Window Installation in Moraga walks through the process and what drives cost.

Door Installation in Moraga
Moraga’s split-level and ranch homes often have sliding glass doors that date to the original build, and many of those are now warped or failing at the threshold because of the valley’s morning fog and big temperature swings. We install entry doors, patio sliders, and fire-rated door assemblies where the hazard zone requires them, including ember-resistant thresholds and proper weatherproofing at the sill. Door Installation in Moraga has pricing detail and a full breakdown.

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 Moraga
We install windows and doors from eight manufacturer lines, including PGT and CGI for impact-rated and fire-rated applications, ECO Window Systems for energy efficiency, and Therma-Tru for entry doors. Our Bay Area warehouse carries the replacement parts and hardware Moraga jobs need most, which keeps turnaround tight. See our brands for the full lineup.
Pricing for Window Company in Moraga, CA
| Service | Typical range in Moraga |
|---|---|
| Single-window replacement (standard size, double-pane, low-e) | $850 - $1,400 installed |
| Single-window replacement (large picture window, fire-rated or tempered) | $1,800 - $3,200 installed |
| Standard sliding glass door replacement (6-foot, tempered) | $1,900 - $3,500 installed |
| Fire-rated sliding glass door (VHFHSZ-compliant, multi-pane) | $3,200 - $5,500 installed |
| Entry door replacement (single, pre-hung, fiberglass or steel) | $1,600 - $3,000 installed |
| Entry door with sidelights (full assembly) | $2,800 - $5,200 installed |
| Patio door replacement (French-style, inswing, tempered glass) | $2,400 - $4,500 installed |
| Window installation for new addition (per opening, rough-in to trim) | $950 - $1,700 per opening |
Prices in Moraga run higher than flatland suburbs when the home is in the hills and requires fire-rated glass, tempered panes, or thicker framing to meet hazard-zone code. Every customer gets a written price before any work starts, and we don’t revise the number at the door.
Neighborhoods We Serve in Moraga
We work across all of Moraga, including the hillside streets where fire-hardening requirements are strictest and the flat ranch-home tracts where window age is the main issue. A representative list:
- Moraga Country Club and surrounding streets
- Rheem Boulevard corridor and Rheem Valley
- Canyon Road hillside area toward the open space preserves
- Moraga Way corridor
- Las Trampas hillside neighborhoods
Crews are dispatched from our San Francisco Bay Area office, and we schedule Moraga jobs daily.
Service Area – Cities Near Moraga
While this page is written for Moraga, our crews also cover nearby Lamorinda and central Contra Costa communities. We work regularly in Orinda, CA, Lafayette, CA, Walnut Creek, CA, and Alamo, CA. If your home is in one of those cities, your local page has pricing and conditions specific to that area.
Serving Moraga, CA - Our Local Coverage Area
We’re based in the Moraga 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 Moraga
We schedule free estimates in Moraga every business day and often within the same week you call. Our phone lines are answered by a live person 24/7, so you’ll get a real appointment window, not a voicemail guess. Call (903) 354-7134 and we’ll put a time on the calendar.
Like-for-like replacements usually don’t require a city permit in Moraga, but any installation that changes the rough opening, adds glass area, or falls within the VHFHSZ overlay may need Contra Costa County review. We handle the permitting on every job that requires it, and you’ll see the permit status written into your estimate.
In most cases, yes. We provide product documentation showing the glazing spec, fire rating, and installation date, which is what Moraga insurers typically ask for when renewing or underwriting a policy for homes in the hazard zone. Let us know what your carrier requested and we’ll make sure the paperwork matches it.
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 Moraga Customers Say
"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"Our energy bill in summer was brutal. New windows made a real dent in it. Salesman wasn't pushy and didn't do the fake "today only" discount thing the others tried."
- Bethany Oh"Two bedroom windows that never opened and one that wouldn't stay up. All replaced in an afternoon. The crew was clean, hauled off the old frames, and the quote held."
- Colette Rhee










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