Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Window Replacement Across San Leandro
Window replacement in San Leandro runs $650-$1,400 per window for insert work and $900-$2,100 per opening for full-frame tear-outs, with most flatland homes needing full-frame replacement because salt air has corroded the original aluminum frames. We schedule measured surveys across San Leandro six days a week, and the written price you get after that survey is the same figure on the final invoice. If you’re tired of windows that fog between the panes, stick in their tracks, or let the morning marine layer seep into your stucco, call Sonia Raman’s team at (509) 265-6387 for a measured quote.
Why Sightline Windows & Doors Is San Leandro’s Preferred Window Replacement Company
Most window companies in the East Bay treat San Leandro like any other Bay-side city. We don’t, because the housing stock here tells a different story than Oakland’s Victorians or Castro Valley’s hillside builds. In the flatland tract neighborhoods west of I-880, we’re consistently pulling out original aluminum horizontal sliders from the 1950s and 60s that are so heavily pitted from salt air that the bottom rails crumble when probed. That’s a San Leandro signature. Our crews have replaced enough of these to know that what looks like an insert job from the curb often becomes a full-frame replacement once the stucco flange is opened. We quote for that possibility up front, in writing, under Haven Clause 5: No surprises.
Every Window Replacement survey we complete in San Leandro is documented. You keep the measured survey. You see the frame readings, the sightline measurements, and the U-factor and SHGC specs for each product we’re specifying. When the crew arrives, the technician’s license number is on the record before they set foot inside. After the job, you get a photo record of every opening, inside and out. That’s the Haven Standard, and it’s been the operating rule for every one of the 18,000+ openings we’ve touched since 2012.
Our Window Replacement Services in San Leandro
Full Frame Replacement
This is the workhorse job in San Leandro’s post-war flatlands. Full frame replacement means we remove the entire window down to the rough opening, repair or replace rotted wood and damaged stucco at the surround, flash the opening correctly, and install a new window that’s properly anchored to the structure. In Washington Manor and Mulford Gardens, the original 1945-1968 single-pane aluminum sliders have failed at the frame level, not just the glass level. Once the corrosion behind the stucco flange is exposed, there’s no hardware fix. The frame comes out. Expect $900-$2,100 per opening depending on size, access, and how much surround repair the stucco needs.
Insert Window Replacement
If the existing frame is square, the sill is solid, and the surrounding stucco is intact, an insert window keeps the original frame in place and fits a new energy-efficient unit inside it. It’s faster and less costly, typically $650-$1,400 per window in San Leandro. But we’re honest about the limits: on west- and north-facing windows in the flatlands, we probe for salt pitting before quoting an insert. If the frame reads compromised, we’ll show you the photos and recommend a full tear-out. The decision stays yours. The evidence is yours either way.
Vinyl Replacement Windows
Vinyl is the most common material we install in San Leandro because it handles the marine layer without corroding, requires no painting, and costs less than fiberglass or aluminum-clad wood. A standard vinyl double-hung or casement window runs $700-$1,300 installed. We specify vinyl by performance, not margin: you’ll see the U-factor and SHGC numbers on your written quote, so you know what you’re paying for in the fog-heavy months.
Energy-Efficient Upgrade
San Leandro’s microclimate works against your glass. Mornings sit under the marine layer, afternoons can clear hot, and west-facing windows catch salt-laden wind off the Bay. That’s why we specify low-E glazing with appropriate SHGC ratings for each orientation. For homes in the Bancroft and Floresta areas, that means south- and west-facing windows get a different glazing package than north-facing windows. The upgrade typically adds $80-$150 per window over standard glass and pays back through lower cooling costs and fewer condensation issues.
Window Maintenance & Care
We document seal failures, track alignment issues, and hardware wear on every survey, even if you’re not ready to replace. If the problem is a compressed balance coil or a roller that’s pitted from salt air, we can sometimes restore function without replacing the window. Maintenance calls in San Leandro can be scheduled Monday through Friday, and the technician arrives with a written scope before any work begins.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in San Leandro
We specify from eight manufacturer lines and choose by what the opening requires, not by what’s sitting in a warehouse. For San Leandro’s salt-air conditions, we frequently recommend impact-rated or marine-grade windows from CGI and PGT for west-facing exposures, and thermally efficient units from ES Windows or ECO Window Systems for homes where the marine layer dominates more than the sun. If you already have a brand in mind, we’ll quote it. If you want our recommendation based on measured frame conditions and orientation, we’ll write that up too. Either way, you get the spec sheet and the price on paper.
Common Window Replacement Problems We See in San Leandro Homes
- Salt-pitted aluminum tracks and rollers. Homes west of I-880 sit close enough to the Bay that salt-laden air pits the aluminum track over decades. Windows that once slid easily now stick or jump off their rollers. Replacement, not lubrication, is the only durable fix.
- Rotted wood sills and stucco surrounds behind original frames. The marine layer brings sustained humidity, and the post-war tract homes were built with minimal flashing and no sill pans. By the time you see visible rot at the exterior, the sill and sheathing behind it are usually gone.
- Seal failure and between-the-glass fogging. Double-pane seals fail faster in San Leandro than in inland Alameda County because of the constant thermal cycling from morning fog to afternoon sun. When the seal goes, the glass fogs and the insulating value drops to near zero.
- Jalousie windows with broken hardware. Some of the 1950s-era homes in Davis Tract and Mulford Gardens still have jalousie windows, and replacement hardware is practically nonexistent. Custom sizing or full-frame conversion is the standard remedy.
Pricing for Window Replacement in San Leandro, CA
Here’s what we quote in San Leandro, in writing, before any work starts:
| Service | Price Range |
|---|---|
| Insert window (standard size, vinyl) | $650-$1,400 per window |
| Full frame replacement (post-war aluminum slider) | $900-$2,100 per opening |
| Energy-efficient glazing upgrade | +$80-$150 per window |
| Custom or near-custom sizing (pre-1968 rough openings) | +15-30% over standard sizes |
| Full-home replacement (typical 3-bed/2-bath flatland tract home) | $12,000-$28,000 |
Three things move the number in San Leandro: whether the frame is structurally sound enough for an insert, how much stucco repair the surround needs after tear-out, and whether your home has non-standard rough openings, which the 1945-1968 tract housing frequently does. Our written estimate accounts for all three before we ask for a signature. Call (509) 265-6387 to schedule a measured survey.
We Also Serve Cities Near San Leandro
Our crews run San Leandro local, but we routinely take measured surveys and schedule installations in Castro Valley, Oakland, Alameda, and Union City. If you’re in one of those cities and want the same written-price-before-work standard applied to your home, call (509) 265-6387. We also handle Door Installation in San Leandro for homeowners whose entry or patio doors are failing alongside their windows.
Serving San Leandro, CA - Our Local Coverage Area
We’re based in the San Leandro 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 - Window Replacement in San Leandro
Most San Leandro homes pay $650-$1,400 per window for insert replacement and $900-$2,100 per opening for full-frame replacement. Flatland tract homes from 1945-1968 frequently require the higher full-frame number because salt-air corrosion has compromised the aluminum frames behind the stucco. Call (509) 265-6387 for a written quote based on a measured survey, not a drive-by estimate.
Measured surveys are typically scheduled within 3-5 business days, and installation usually follows within 2-4 weeks depending on product lead times and permitting. We don’t promise same-day tear-outs on planned replacement work because proper flashing, stucco repair, and inspection require sequenced time. But the survey and written price come fast. Call (509) 265-6387 to get on the schedule.
Yes. When a permit is required for structural work, we pull it, schedule the inspection, and document the pass. San Leandro’s building department requires permits for full-frame replacements that alter the opening or involve structural repairs to the surround, and we handle that paperwork as part of the job. The permit number appears on your written scope.
San Leandro’s window pricing sits in the middle of the East Bay market: generally comparable with Alameda and Union City, slightly less than Oakland’s hillside homes with more complex access and older structural conditions. The cost driver that’s unique to San Leandro is the frequency of full-frame work due to salt-air corrosion in the flatlands west of I-880. Call (509) 265-6387 for a quote that reflects your specific openings.
Every installation we complete is covered by our written 365-Day Done Right Promise, which is part of the Haven Standard. If something isn’t done right, we make it right at no additional cost. Manufacturer warranties on glass, seals, and hardware apply separately, and we hand you the written warranty documentation with your photo record on the final day.
Get a Written Price for Window Replacement in San Leandro
Sonia Raman leads the Window Replacement team at Sightline Windows & Doors, and she’s the person who reviews the measured survey before a quote goes out. You’ll have a written price, a documented scope, and a spec sheet for every opening before anyone lifts a tool. Call (509) 265-6387 to schedule your free measured estimate, or if you already have a competitor’s written estimate in hand, bring it in for a free second opinion under the Haven Standard.
Written by Sonia Raman, Owner at Sightline Windows & Doors, serving San Leandro under the Haven Standard since 2012.