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Window Company in San Lorenzo, CA
Window and door work in San Lorenzo, CA means dealing with a specific housing profile: mostly mid-century single-story homes built between the 1940s and 1970s, many with original aluminum-frame windows that have outlived their usefulness. Marine air from the Bay means fog, salt, and damp winters work on frames and seals year-round. Juniper Windows & Doors handles window replacement, window installation, and door replacement here with written pricing before any work starts and a 365-day guarantee on every job. Call (682) 281-2168 for a free estimate.
Why San Lorenzo Homes Are Different
San Lorenzo was developed largely as planned suburban housing after World War II, and the housing stock reflects it. Most windows you’ll see driving through the area are original single-pane aluminum sliders or wood double-hungs, now 50 to 75 years old. Aluminum conducts heat, so those frames sweat in winter and radiate heat in summer, and single-pane glass does almost nothing for sound from BART or Highway 238 traffic. The marine layer sits over San Lorenzo many mornings, which means condensation on old windows isn’t just a cosmetic issue; it’s a sign the seals have failed.
Homes here are often on flat lots with modest setbacks, which makes access straightforward for crews and keeps installation days predictable. But many San Lorenzo properties have stucco exteriors, and that affects how a window is flashed and sealed. Cut stucco wrong and you invite water behind the wall. Our crews are used to the stucco-and-sheathing condition common to this area and plan the replacement around it, not against it.
If you live in an unincorporated pocket of the community, building permits can route through Alameda County. That doesn’t change our process; we pull the permits and schedule the inspections. It just means the paperwork takes a day or two longer sometimes.
Our Main San Lorenzo Services
The three services San Lorenzo homeowners call about most are window replacement, window installation, and door replacement. Each has its own dedicated page with local detail and pricing.
Window Replacement in San Lorenzo
Most San Lorenzo replacements involve pulling out original aluminum sliders and putting in dual-pane vinyl or impact-rated glass sized to the existing rough opening. The goal is better U-factor numbers without rebuilding the wall around the window. Foggy glass, sticky tracks, and bent frames are the usual reasons we’re called. On stucco homes, we’re careful to remove the old frame without cracking the surrounding stucco more than necessary, then flash and seal the new unit properly. Window Replacement in San Lorenzo covers exact pricing and what to expect.

Window Installation in San Lorenzo
New construction and additions in San Lorenzo need windows installed from scratch, which is a different job from replacement. Here we’re working with open rough openings, fresh flashing, and a building inspector’s eye on the permit. We install to the manufacturer’s spec so the warranty stays intact, and we set the window level and square before the siding and drywall go up. Window Installation in San Lorenzo has the full process and price ranges for this part of town.

Door Replacement in San Lorenzo
Entry doors in San Lorenzo take a beating from damp winter air and direct afternoon sun on west-facing homes. Swollen jambs, rusted hinges, and door slabs that no longer sit square in the frame are common. We replace the full unit when the jamb is compromised, or the slab alone when the frame is still solid. Fiberglass doors hold up better than wood here, especially within a few miles of the Bay. Door Replacement in San Lorenzo breaks down what each option costs.

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 Lorenzo
We install and service windows and doors from PGT, CGI, ViewLux, and CWS, among others. Parts for these lines are stocked at our Bay Area distribution point, which keeps most San Lorenzo repair and replacement jobs on schedule without waiting on a long-distance shipment. See our brands for the full list and what each line does best.
Pricing for Window Company in San Lorenzo, CA
| Service | Typical range in San Lorenzo |
|---|---|
| Standard window replacement (vinyl, dual-pane) | $450 – $900 per window |
| Impact-rated window replacement | $800 – $1,600 per window |
| Full-frame window replacement (stucco home) | $700 – $1,400 per window |
| Window installation (new construction / addition) | $350 – $800 per opening, labor only |
| Sliding glass door replacement | $1,600 – $3,200 per door |
| Entry door replacement (fiberglass, full unit) | $1,100 – $2,400 per door |
| Entry door slab-only replacement | $500 – $1,100 per door |
| Patio door glass replacement | $300 – $750 per panel |
| Window glass replacement (insulated unit only) | $225 – $500 per window |
What moves the price in San Lorenzo is stucco work around the frame, any hidden rot in the rough opening, and whether the home is in an unincorporated area where permit processing runs through Alameda County. Every job gets a written price before we start, and that number doesn’t change unless you ask us to change scope.
Neighborhoods We Serve in San Lorenzo
We work across San Lorenzo and the surrounding unincorporated areas. Most of our calls come from a handful of neighborhoods where the housing stock is oldest and the original windows are finally giving out.
- San Lorenzo Village
- Del Rey
- Colonial Acres
- Bonaire
- Grant Park area
Response time is generally same-day or next-morning for quotes, with installation scheduled within one to two weeks depending on product lead times and permit routing.
Service Area – Cities Near San Lorenzo
Beyond San Lorenzo, we schedule work in nearby East Bay communities including Castro Valley, CA, San Leandro, CA, Union City, CA, and Oakland, CA. If you’re just outside San Lorenzo, call and we’ll confirm whether we can reach your address on the same schedule.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Lorenzo
Most San Lorenzo estimates happen same-day or next-morning. Installation timing depends on the product and whether permits route through Alameda County, but many replacement jobs are scheduled within one to two weeks. Call (682) 281-2168 and we’ll give you a real date, not a range.
Replacing a window in the same opening typically doesn’t require a permit, but full-frame replacements and new installation openings can, especially in unincorporated areas under county jurisdiction. We pull whatever the project needs and schedule the inspection. It’s part of the written scope, never a surprise.
We cover the full San Lorenzo area, including the unincorporated pockets and neighborhoods bordering San Leandro and Hayward. If you’re unsure whether you’re in our service area, call (682) 281-2168 and we’ll confirm your address in about a minute.
Sean Mackey and the Juniper Windows & Doors team are ready to look at your San Lorenzo windows or doors. Call (682) 281-2168 for a free estimate with a written price before any work begins.
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 Lorenzo 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.










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