Single hung
Double hung
Horizontal roller
Casement
Bay & bow
Sliding glass doors
Entry doors
Impact garage doors
PGT
CGIFree in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Get your free estimateWindow Company in Danville, CA
Lightwell Windows & Doors is a window and door company serving Danville homeowners with window replacement, window installation, and door installation. Danville homes are not like the rest of the East Bay – the custom builds, expansive glass, and strict residential design review rules mean the work requires more care, more paperwork, and a deeper understanding of how a specific house was originally put together. Call (831) 480-4124 for a free estimate on any window or door project in Danville.
Why Danville Homes Are Different
Danville’s housing stock is dominated by single-family detached luxury homes on large lots, with many custom builds from the 1980s through the 2000s featuring expansive window walls, arched openings, and wood or aluminum-clad frames. There are also older ranch-style homes from the 1960s and 70s scattered through town, often with original single-pane glazing that has been fighting the California sun for fifty years. The Mediterranean climate – hot, dry summers and mild, wet winters – puts real stress on window seals and frames. We regularly see failed insulated glass units in Danville where the summer UV exposure has broken down the seal, and wind-driven rain in the winter tests flashing and weatherstripping on older installations.
The other thing that makes Danville different is the town’s strict residential design review. For many homes, especially in gated communities like Blackhawk and Diablo, replacing a window or door is not a simple swap. The town often mandates specific window styles, colors, and materials to preserve architectural character, which means the product selection has to match what the design review board will approve, not just what fits the rough opening.
Styles & brands we work with
Our Main Danville Services
Danville homeowners most often reach out to us for window replacement and door installation, and we also handle full window installation on new builds and additions. Each service has its own Danville page, linked below.
Window Replacement in Danville
Window replacement in Danville frequently involves matching custom millwork or retrofitting curved and radius windows, especially in Blackhawk and Diablo, where those shapes are common and expensive to reproduce. We carry products from brands like PGT and CGI that can be ordered in custom geometries, so the replacement keeps the original look while improving energy performance. We also handle the straightforward work – replacing failed dual-pane units in 1980s and 1990s homes where the original aluminum frames are still sound. Window Replacement in Danville
Window Installation in Danville
Window installation in Danville comes up most often on additions, remodels, and the occasional new custom build. The work involves setting new-construction frames into rough openings, flashing them correctly for Danville’s wet winters, and coordinating with the builder’s schedule so the openings are closed up before the rainy season hits. For homes with expansive glass walls, we pay particular attention to structural loads and the weight of the glazing package. Window Installation in Danville
Door Installation in Danville
Door installation in Danville ranges from front entry systems in Blackhawk’s gated communities to patio doors that open onto hillside backyards. We install Therma-Tru entry doors, multi-slide patio units, and interior doors, and we handle the trim, hardware, and weathersealing so the finished opening is tight against winter wind-driven rain. For homes under design review, we prepare the product specifications the town needs to approve before installation begins. Door Installation in Danville
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 Danville
We install and service windows and doors from eight manufacturers, including Therma-Tru entry doors, ViewLux window systems, PGT impact products, and CGI custom geometries. Parts and service support are coordinated through our local dispatch, so Danville homeowners get a quick answer on availability and lead times. See our brands for the full lineup.
See the difference
Before
After
Before
After
Before
AfterPricing for Window Company in Danville, CA
| Service | Typical range in Danville |
|---|---|
| Standard window replacement (per opening) | $850 – $1,400 |
| Large or oversized window replacement (per opening) | $1,400 – $2,600 |
| Curved or radius window replacement (per opening) | $2,500 – $5,000+ |
| Window installation (new construction, per opening) | $350 – $650 |
| Window installation with complex flashing or trim | $650 – $1,100 |
| Entry door installation (single door, standard) | $1,200 – $2,500 |
| Entry door installation (custom or oversized) | $2,500 – $5,000 |
| Patio door installation (sliding or French) | $1,800 – $4,000 |
| Multi-slide patio door installation | $4,000 – $9,000 |
Prices in Danville push higher than the East Bay average when the home is in a gated community with design review requirements, when the openings are curved or radius, or when the existing frames are wood and need custom millwork to match. We put every price in writing before any work starts, so the number you approve is the number you pay. No change orders, no surprises.
Neighborhoods We Serve in Danville
We work throughout Danville, from the gated communities to the older ranch neighborhoods. Typical response for an estimate in Danville is within a couple of days, and we schedule installations around your family’s routines.
- Blackhawk
- Diablo
- Greenbrook
- Westside Danville
- El Pintado
Service Area – Cities Near Danville
Lightwell Windows & Doors serves Danville and the surrounding communities across the East Bay. Our window and door services are available to homeowners in Alamo, CA, Walnut Creek, CA, Lafayette, CA, and Castro Valley, CA. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve each of these areas locally.
Serving Danville, CA - Our Local Coverage Area
We’re based in the Danville 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 Danville
Many Danville homes, especially in Blackhawk, Diablo, and other gated communities, require design review approval before window or door replacement. The review often covers style, color, and material. We can prepare the product specifications and submittal information the town or HOA needs, and we will not start work until the approval is in hand.
We can usually schedule a free estimate within two to three business days for Danville homes. Installation timing depends on the product lead time and whether design review approval is required. Call (831) 480-4124 and we will give you a straight answer on both.
No. Every Danville project gets a written, line-item price before any work begins. The price we quote is the price you pay, unless you ask us to add something during the job. We do not hand you a bigger number at the end than the one you approved at the start. Call (831) 480-4124 for an exact quote on your project.
Six Reasons Homeowners Choose Lightwell Windows San Francisco
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.
Other Lightwell Windows San Francisco Services
What Neighbors Say About Lightwell Windows San Francisco
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 Danville Customers Say
"They replaced a big foggy picture window. Careful with the furniture, laid down protection, and left no mess at all. Calm and respectful crew, and the view is clear again."
- Teresa Okafor"Replaced drafty old windows and a back door. The crew was gentle around my mother's antiques, protected everything, and cleaned up beautifully. Home feels warmer and calmer already."
- Walter Prim"New patio slider. Clean install, they protected the floor and hauled off the old door. Quiet, polite crew that worked around my work calls without complaint."
- Andre Bellamy