Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterWindow Company in Hillsborough, CA
Finding a window company in Hillsborough means working around a very specific set of rules other Peninsula towns never deal with. Nearly every exterior change a homeowner makes here goes through the Town’s Architectural Review Board, and a large share of the pre-war estates still carry their original steel casement windows. We’re Westlight Windows & Doors, an independently owned and operated Kingswell location, and we match the right product to a Hillsborough home rather than asking the house to change. Call us at (903) 354-7134 for a free estimate.
Why Hillsborough Homes Are Different
Hillsborough is almost entirely large custom estates ranging from 4,000 to over 12,000 square feet, most built between the 1920s and 1950s in Spanish Colonial Revival, Tudor Revival, and Mediterranean styles. That means original steel casement windows, arched masonry surrounds, and solid-wood or mahogany entry doors are common, not rare. Newer custom builds on the western hills lean contemporary, but there are no tract homes here, and the town has no commercial buildings at all.
The mid-Peninsula hillside position does something else worth knowing about: north- and bay-facing elevations sit in morning marine fog for long stretches. Wood frames and glazing compound stay damp, fir and mahogany rot faster, and insulated units with weak seals fail early. When we replace windows in Hillsborough, low-e glass (a thin coating that reflects heat back into the room in winter and out in summer) and properly back-primed frames are standard practice, not upgrades.
And then there’s the review board. Replacement windows and doors on street-visible elevations must match the original architectural character in profile, material finish, and divided-light pattern. A contractor who shows up proposing a standard vinyl double-hung for a 1930s Spanish Colonial will lose the job. Sourcing true steel or aluminum-clad wood windows with narrow sightlines is the baseline here.
Our Main Hillsborough Services
Homeowners in Hillsborough call us most often about the three services below. Each has its own detailed Hillsborough page.
Window Replacement in Hillsborough
Most Hillsborough replacement work involves matching original steel casement or wood window profiles while bringing the glass up to modern energy standards. The marine fog that sits against north-facing elevations makes low-e glass and quality frame materials a practical necessity, and the Architectural Review Board’s matching requirements shape the product selection from the start. Owen Satterfield makes sure every quote names the exact window profile and finish before any commitment. See the full breakdown on our Window Replacement in Hillsborough page.
Window Installation in Hillsborough
New construction and addition work in Hillsborough often includes large fixed picture windows, steel or aluminum-clad windows for contemporary builds, and true divided-light patterns that satisfy design review. We install eight manufacturer lines, including ES Windows and ECO Window Systems, so the glass, frame material, and sightlines can be matched to the architectural style rather than forced from one catalog. Read more on our Window Installation in Hillsborough page.
Door Installation in Hillsborough
Hillsborough entry doors are frequently oversized solid-wood or mahogany pieces with leaded glass or arched masonry surrounds, and the ARB reviews them the same way it reviews windows. We install Therma-Tru and other manufacturer lines with finishes and hardware that hold up under the town’s damp, foggy conditions and meet design-review expectations on street-visible elevations. Details are on our Door Installation in Hillsborough 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 Hillsborough
We carry eight manufacturer lines so the right product lands in the right house. For Hillsborough’s pre-war steel casements and contemporary west-hills builds, the brands that come up most are ES Windows, ECO Window Systems, and CWS. Parts and hardware for these lines are stocked regularly, which keeps most service work moving quickly. You can see the full list on our brands page.
Pricing for Window Company in Hillsborough, CA
| Service | Typical range in Hillsborough |
|---|---|
| Window glass replacement | $175-$450 per pane, installed |
| Window sash replacement | $300-$700 per sash, installed |
| Full-frame window replacement | $650-$1,400 per opening, installed |
| Steel casement window restoration | $800-$2,200 per window, installed |
| Wood casement window replacement | $700-$1,600 per window, installed |
| Exterior door replacement | $850-$2,800 per door, installed |
| Interior door installation | $250-$700 per door, installed |
| Sliding patio door replacement | $1,200-$3,400 per door, installed |
| French door installation | $1,400-$4,000 per opening, installed |
Steel casement restoration and true divided-light patterns push Hillsborough prices toward the higher ends of these ranges. The Kingswell Guarantee states the price before any work starts, and that written number does not change at the door.
Neighborhoods We Serve in Hillsborough
We work across the entire town, from the flat parcels near the Burlingame border up to the steep western hillside lots where fog lingers longest. Typical response for a scheduled estimate in Hillsborough runs one to three business days, depending on the season.
- Carolands
- Hillsborough Park
- Lakeview
- Crocker
- Skyfarm
Service Area – Cities Near Hillsborough
Westlight crews serve Hillsborough locally, with dispatch and scheduling coordinated from the brand’s San Francisco Bay Area office. We also cover nearby markets across the state for larger projects, including San Francisco, CA, San Jose, CA, Los Angeles, CA, and San Diego, CA.
Serving Hillsborough, CA - Our Local Coverage Area
We’re based in the Hillsborough 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 Hillsborough
Any exterior window or door replacement visible from the street requires ARB approval before a permit issues. Interior work and rear-elevation changes that do not face a street are typically exempt, but we confirm review status on every estimate so nothing stalls mid-project.
Yes. We work with manufacturer lines like ES Windows that produce true steel and aluminum-clad profiles with narrow sightlines and divided-light patterns that satisfy ARB matching requirements. For original windows worth keeping, restoration is often more cost-effective than full replacement. Call (903) 354-7134 and we will assess what you have.
Scheduling depends on product lead time, which runs four to ten weeks for custom steel or aluminum-clad windows. Stock units move faster. Every written estimate includes a committed arrival window so you know exactly when crews show up and when the job finishes.
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 Hillsborough 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