Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Foster City, CA
Window and door work in Foster City means accounting for a lagoon-side microclimate that most Bay Area contractors never think about: persistent marine air, regular afternoon wind off the water, and neighborhoods built largely in the 1960s and 1970s with original aluminum frames now past their useful life. Juniper Windows & Doors handles window replacement, window installation, and door replacement across Foster City with written pricing before any work starts. Call home base at (682) 281-2168 to schedule a free estimate.
Why Foster City Homes Are Different
Foster City sits on reclaimed land between San Francisco Bay and the Belmont Slough, which shapes what windows and doors contend with here. Salt-laden air accelerates corrosion on older aluminum frames and hardware, and homes near the lagoon or bay side routinely see heavier wind loads than inland Peninsula properties a few miles west. A window that would hold up fine in San Mateo or Redwood Shores may need impact-rated glass and stainless hardware here, especially on second-story openings facing the water.
The housing stock is overwhelmingly mid-century: ranch homes and two-story models from the 1960s and 1970s built before low-E coatings and double-pane insulated glass were standard. Many of these houses still have their original sliding patio doors and single-pane windows, which is why Foster City homeowners frequently ask us about condensation between panes, rooms that never hold temperature, and fogged glass. HOA requirements matter in pockets like the Island and the condo communities around Edgewater Boulevard; some associations limit frame colors or visible hardware finishes, so we verify those details before ordering. Permits for window and door replacement in Foster City are handled at the city level, and most like-for-like replacements clear quickly.
Our Main Foster City Services
Foster City homeowners call us most for two things: replacing original aluminum-frame windows, and swapping out dated sliders and entry doors. Here is what each service looks like in this city, with a dedicated page for the full detail.
Window Replacement in Foster City
Most replacement work in Foster City involves pulling 1960s and 1970s aluminum frames and setting new vinyl, fiberglass, or aluminum-clad units with low-E glass and argon fill. Marine air is the deciding factor: we recommend stainless hardware and, for water-facing elevations, impact-rated glass that resists wind-borne debris without shattering. The full scope, pricing, and Foster City-specific product guidance are on the dedicated page: Window Replacement in Foster City.

Window Installation in Foster City
New-construction and addition window installation in Foster City means working to current California Title 24 energy standards and coordinating with the city’s inspection schedule. We install for six product lines and verify that every unit meets local wind-load requirements before it goes in. For homeowners building here or adding square footage, we manage the order, the install, and the sign-off on one written quote. Details here: Window Installation in Foster City.

Door Replacement in Foster City
Foster City’s original sliders and hollow-core entry doors take a beating from wind and moisture. We replace them with fiberglass entry doors and multi-point-locking sliders that seal tighter and operate smoother than the originals. Threshold height and drainage matter here because patios and entries near the lagoon can collect standing water in winter. Full options and Foster City door pricing: Door Replacement in Foster City.

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 Foster City
For Foster City jobs we regularly install products from CGI, CWS, and ES Windows, along with ECO Window Systems where the budget or opening size calls for it. Hardware and common replacement parts are stocked at our Bay Area office, so routine repairs don’t wait on a long parts lead time. View the full lineup at our brands.
Pricing for Window Company in Foster City, CA
| Service | Typical range in Foster City |
|---|---|
| Window replacement (single standard vinyl window) | $500 – $900 |
| Window replacement (impact-rated, water-facing elevation) | $1,100 – $1,600 |
| Window installation (new construction, per opening) | $300 – $700 |
| Full-home window replacement (12 – 16 windows) | $8,000 – $18,000 |
| Door replacement (front entry, fiberglass) | $1,400 – $3,200 |
| Door replacement (sliding patio door) | $1,800 – $4,000 |
| Door replacement (multi-point-locking slider) | $2,400 – $5,200 |
| Screen repair or replacement | $60 – $180 |
Two things push Foster City pricing above the inland baseline: impact-rated glass for water-facing elevations, and stainless hardware to resist salt air. Whatever the number, it goes in writing before we order a single unit, and it does not change at the door. Call (682) 281-2168 for a free estimate on your specific openings.
Neighborhoods We Serve in Foster City
We work throughout Foster City, from the lagoon-front streets to the neighborhoods west of Highway 92. Our crews serve the whole city from the Bay Area office, and most Foster City appointments get scheduled within two to five business days.
- The Island
- Edgewater
- Whispering Pines
- Sunfish Court
- Sea Colony
Service Area – Cities Near Foster City
Juniper also handles window and door work across the wider Bay Area and Southern California. If you’re outside Foster City proper, see our pages for San Francisco, CA, San Jose, CA, Los Angeles, CA, and San Diego, CA.
Serving Foster City, CA - Our Local Coverage Area
We’re based in the Foster City 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 Foster City
Most Foster City estimates are scheduled within two to five business days. Our Bay Area office coordinates dispatch, and a live person answers the phone 24/7 to set appointments. Call (682) 281-2168 and you’ll get a real human, not a voicemail queue.
Some Foster City communities do restrict frame colors or visible hardware finishes, particularly on the Island and along Edgewater Boulevard. We check your HOA’s guidelines before ordering so you don’t end up with a product that has to be returned. The estimate is free either way.
Yes. Like-for-like replacements typically clear the city quickly, and we manage the paperwork and inspection scheduling as part of the job. The permit cost is itemized in your written quote before anything starts, and the 365-Day Done Right Promise covers every installation in writing.
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 Foster City Customers Say
"Front door looks great and shuts well. The threshold is sealed well and the lock lines up with the strike."
- Rory F."Quote came in the app with options for glass. Easy to compare."
- Vera L."Door replacement. Installer texted when on his way and finished by lunch. Tight and clean."
- Neil B.










Before
After
Before
After
Before
After