Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Westlight Windows & Doors is the window company San Anselmo homeowners call when the job has to fit a 1920s Craftsman bungalow, survive a wet Ross Valley winter, and stay on budget. We replace, install, and service windows and doors throughout San Anselmo, and we carry eight manufacturer lines so the product matches the house instead of the other way around. Owen Satterfield leads our team, and every job runs on a written price before work starts. If you’re pricing a project, call (903) 354-7134 for a free estimate.
Why San Anselmo Homes Are Different
San Anselmo sits low in the Ross Valley, where moist Pacific air settles and the surrounding hills hold it there. That means wetter winters and hotter, drier summers than nearby coastal towns, and a moisture cycle that pushes historic wood window sills and door frames to swell, split, and rot faster than in Mill Valley or Sausalito. Most San Anselmo homes were built between 1895 and 1945, Craftsman bungalows and Victorian cottages with original single-pane wood double-hung windows and divided lites. Replacing those windows isn’t a swap; it’s a match. Muntin profiles and sash proportions have to follow the original lines, and homeowners who value the character of their house usually choose wood or clad-wood over vinyl, which Marin County design review tends to flag anyway. Then there’s the creek. San Anselmo Creek has flooded repeatedly, most notably in 1982 and 2005, and the blocks along Tunstead Avenue and lower San Anselmo Avenue still carry silt and hidden rot inside door jambs and sill pans from those events. A ground-floor exterior door quote in that zone should start with probing the sill framing, not with a catalog price.
Our Main San Anselmo Services
Window replacement and door installation are the two calls we take most often from San Anselmo homeowners, and each has its own dedicated page with full pricing, process, and local detail.
Window Replacement in San Anselmo
Replacing windows in San Anselmo means working around original casing profiles and, in many cases, satisfying design review with wood or clad-wood units that match the house. We carry ViewLux and PGT lines that cover both historic-style wood and hurricane-rated impact options, and we measure every opening before we quote so the written price reflects the actual job. Whether it’s a single failed double-hung or a full Craftsman re-glaze, the scope and number are locked before any work begins. Window Replacement in San Anselmo covers costs, brands, and timelines in detail.
Window Installation in San Anselmo
New construction and addition windows in San Anselmo come with their own set of requirements: flashing details that hold up to wet winters, gap tolerances on older framing, and product choices that won’t fight the style of the house. We install across eight lines, including CWS and ES Windows, and every installation follows the same Kingswell Guarantee that governs our replacement work. If you’re building or adding on in San Anselmo and need windows set right the first time, the Window Installation in San Anselmo page walks through what to expect.
Door Installation in San Anselmo
Door installation here is rarely as simple as pulling a unit out of a box. Near the creek corridor, we regularly find door jambs with embedded silt and rot from past floods, which turns a basic replacement into a full buck-and-subfloor rebuild. Farther up the hillside, the usual challenge is a 1930s Colonial Revival frame that has settled out of square. Fiberglass doors from Therma-Tru and steel options from CWS handle moisture better than wood in the low-lying blocks, and we quote the frame condition, not just the slab. Door Installation in San Anselmo has full pricing by door type.
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 San Anselmo
We install and service products from PGT, CGI, CWS, and ViewLux, among others, and we stock common parts locally so many hardware and seal repairs don’t wait on a factory shipment. See our brands for the full range of what we carry and recommend by application.
Pricing for Window Company in San Anselmo, CA
| Service | Typical range in San Anselmo |
|---|---|
| Single wood double-hung window replacement (standard size, no rot repair) | $700-$1,200 installed |
| Single vinyl window replacement (standard size) | $450-$800 installed |
| Full-house window replacement (10-14 windows, wood or clad-wood) | $14,000-$24,000 installed |
| Full-house window replacement (10-14 windows, vinyl) | $9,000-$15,000 installed |
| New construction window installation (per opening, mid-range product) | $650-$1,100 installed |
| Entry door replacement (fiberglass, standard single door) | $1,800-$3,200 installed |
| Entry door replacement (steel, standard single door) | $1,500-$2,800 installed |
| Entry door replacement (wood, custom or historic match) | $2,500-$4,500 installed |
| Interior door installation (pre-hung, hollow core) | $300-$550 per door installed |
| Interior door installation (pre-hung, solid core) | $450-$750 per door installed |
| Patio door replacement (sliding, standard 6-foot opening) | $1,600-$3,400 installed |
What pushes a San Anselmo price up is rot. A door jamb with silt from a past creek flood, a window frame that’s been swelling and shrinking for 90 years, a sill pan that crumbles when probed, all of those add framing repair that a catalog price never sees. That’s why we measure, open, and inspect before we hand over a number. You receive your written price before any work starts, and that’s the price you pay.
Neighborhoods We Serve in San Anselmo
We work across all of San Anselmo, from the creek-side blocks near downtown up into the hillside streets where the Victorians hold their original windows. Response times for estimates and service calls generally run a few business days, depending on the season and scope.
- Downtown San Anselmo and the Creek Corridor
- Sleepy Hollow
- West End
- The Seminary area
- Brookside
Service Area – Cities Near San Anselmo
Our San Anselmo crews also cover the surrounding Ross Valley and central Marin communities. If you’re in Fairfax, CA, Kentfield, CA, San Rafael, CA, or Larkspur, CA, the same written-price guarantee and eight manufacturer lines apply. Scheduling is coordinated through our San Francisco Bay Area office, with crews dispatched locally to San Anselmo and its neighbors.
Serving San Anselmo, CA - Our Local Coverage Area
We’re based in the San Anselmo 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 San Anselmo
Most San Anselmo estimates are scheduled within a few business days of your call. We give you a committed arrival window, not a vague “sometime Thursday,” and a live person answers the phone 24/7 at (903) 354-7134 to set it up. Call us for the soonest available slot.
Many do, especially for homes in designated historic districts or with visible street-facing elevations. Marin County design review often requires matching muntin profiles and sash proportions, which usually means wood or clad-wood rather than vinyl. We handle the permit paperwork and coordinate submittals as part of the job when you hire us. Call (903) 354-7134 and we’ll tell you what your specific address needs.
Yes, and we price those jobs differently, because a ground-floor door near the creek corridor often hides rot and silt inside the jamb and sill framing. We probe the framing before quoting, and the written price includes the full rebuild if the rot is found. Call (903) 354-7134 for a free estimate that reflects your home’s actual condition.
If you’re ready to talk numbers, call Owen and the team at (903) 354-7134. Estimates are free, the price goes in writing before any work begins, and every job comes with a written guarantee. We’ll show up in the window we give you, leave the site cleaner than we found it, and stand behind the work for a full year. That’s the Kingswell Way, and it’s the only way we’ve worked since 2009.
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 San Anselmo 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