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
AfterWindows & Doors in San Leandro, CA
Window installation in San Leandro usually means replacing original aluminum sliders from the 1950s and 60s, and most of those jobs end up as full-frame tear-outs, not insert retrofits. Salt air off the Bay corrodes the rails and rollers, while morning marine layer condensation rots the wood sills behind the stucco. We price that work in writing before anything starts, so you know the real number on the day you decide. Call (509) 265-6387 for a measured survey and the written number.
Why San Leandro Homes Are Different
Most homes in San Leandro’s flatlands west of I-880 were built between 1945 and 1970 to house the post-war industrial workforce, and they came with a specific window package: aluminum horizontal sliders or jalousies, single-pane, with wood bucks buried in stucco. The flatlands sit low in the East Bay hills’ coastal gap, so the marine layer arrives most mornings and lingers. Salt-laden fog pits aluminum, and constant condensation works its way behind frames and into the wood. The result is a double failure mode: hardware corrodes and seizes at the roller and rail level while the sill and surrounding stucco soften from moisture intrusion.
Washington Manor and the neighborhoods along Davis Street show this pattern clearly. A window that looks like a simple insert job will often reveal a corroded bottom rail that has lost structural integrity once we probe behind the frame. Door rough openings from that era were often framed at 4/9, which is pre-modern sizing, so a contemporary pre-hung door needs real shimming and in many cases a custom or near-custom unit. The work here is different enough that we treat San Leandro as its own specification zone.
Our Main San Leandro Services
Two services account for most of the calls we take from San Leandro homeowners: full door installation and complete window replacement.
Door Installation in San Leandro
Door installation in San Leandro regularly collides with 4/9 rough openings and door frames that have absorbed decades of coastal moisture. A new pre-hung door rarely drops into the existing opening without real shimming work, and in many cases the rough opening needs re-framing before the new unit goes in. We measure the actual opening, not the old door, and the written quote is built from that survey. Full details are on our Door Installation in San Leandro page.
Window Replacement in San Leandro
Window replacement in San Leandro is usually a full-frame job, not an insert, because the corrosion and sill rot we find in flatland homes runs behind the stucco flange. We remove the old window, inspect the rough opening, repair or replace the sill, and set the new unit with fresh flashing before reinstalling the exterior trim. The measured survey is the quote, so the number doesn’t shift once work begins. See the full breakdown on our Window Replacement in San Leandro 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.
BeforeAfterWindow Installation in San Leandro
Window installation in San Leandro means removing 60-year-old aluminum sliders that have been eaten by salt air and replacing them with units sized to the actual opening, not the old frame. In the flatlands, that usually means a full-frame installation, because the wood sill and stucco behind the old window have taken on moisture for decades. Our Window Installation process starts with a measured survey you keep, and the written quote is built from that same document.
Single & Double Hung Windows
Signs you need it
Sashes that stick, drop, or won’t stay open signal worn balances and warped frames from years of coastal humidity.
What it costs in San Leandro
Installing single or double hung windows in San Leandro typically runs $900 to $1,800 per unit, including full-frame replacement.
How we do it
We pull the old sash and frame, inspect the rough opening for rot, replace the sill if needed, set the new unit, and flash before re-trimming.
Horizontal Roller Windows
Signs you need it
The original aluminum sliders no longer glide, the bottom rail flexes when you push on it, or visible pitting runs along the track.
What it costs in San Leandro
Horizontal roller window replacement here runs $850 to $1,700 per opening, with the higher end covering rotted sill repair and full-frame work.
How we do it
We remove the corroded slider, cut back the stucco flange, replace the buck if it has rotted, and set a new roller unit with fresh weatherstripping.
What Window Installation Costs in San Leandro
| Item | Typical range in San Leandro |
|---|---|
| Single or double hung window (full-frame) | $900 - $1,800 |
| Horizontal roller window (full-frame) | $850 - $1,700 |
| Sill or rough-opening rot repair (per opening) | $175 - $450 |
How long does window installation take in San Leandro?
A typical flatland home with eight to twelve openings takes three to five working days for full-frame replacement. Rot repair or stucco remediation adds time to any opening that is worse than it looked before we opened the wall.
Will the San Leandro price change once you open the wall?
No. The written quote from your measured survey is the invoice, and the 365-Day Done Right Promise governs every job. If hidden rot changes the scope, we document it, show you the photo record, and agree the cost in writing before continuing.
Impact Windows & Doors in San Leandro
Impact windows and doors in San Leandro address two forces at once: the Pacific storm track that pushes wind-driven rain through the Golden Gate corridor, and the daily salt-air corrosion that destroys standard aluminum frames. Most flatland homes have neither impact-rated glazing nor the frame strength to hold it, so this work is almost always a full replacement, not an upgrade. Our Impact Windows & Doors line covers the frame, glazing, and hardware as one tested assembly.
Impact-Resistant Windows
Signs you need it
Your existing windows are single-pane aluminum from the 1960s, and a storm event would bring glass and frame failure, not just water intrusion.
What it costs in San Leandro
Impact-resistant window replacement in San Leandro typically runs $1,200 to $2,400 per unit, depending on frame material and size.
How we do it
We remove the old frame to the rough opening, check the structural fastening to the studs, set the impact-rated unit, and certify the assembly through our documented photo record.
Single Hung Impact Windows
Signs you need it
Older single hung windows in San Leandro homes flex at the meeting rail under wind load and the glazing bead has worn to the point of rattling.
What it costs in San Leandro
Single hung impact windows run $1,100 to $2,100 per opening in San Leandro, with the higher end covering full-frame replacement.
How we do it
We remove the old window, inspect the opening for concealed rot, install the impact-rated single hung with fresh sealant, and document every step.
What Impact Windows & Doors Costs in San Leandro
| Item | Typical range in San Leandro |
|---|---|
| Impact-resistant window (per unit) | $1,200 - $2,400 |
| Single hung impact window (per unit) | $1,100 - $2,100 |
| Impact sliding glass door (full assembly) | $3,200 - $6,500 |
Do I need impact windows in San Leandro?
San Leandro sits in the Bay’s wind corridor, so wind-driven rain and debris are real risks, not abstractions. Impact-rated windows and doors give you a tested assembly that protects the whole opening rather than just the glass. Call (509) 265-6387 for a written estimate that shows the exact cost.
Will impact windows stop the salt air corrosion in San Leandro?
The glazing and laminated glass handle impact loads, but the frame needs to be the right material. We spec impact-rated aluminum or vinyl frames with corrosion-resistant hardware so the marine layer doesn’t eat the replacement the way it ate the original. Get a free written estimate at (509) 265-6387.
Energy-Efficient Windows in San Leandro
Energy-efficient windows in San Leandro have to solve the home’s actual thermal problem: single-pane aluminum frames that conduct heat out all day and pull moisture in all night. The marine layer keeps the flatlands humid, so condensation on old glass is a nightly event, and that moisture is what feeds the sill rot we find behind the stucco. Our Energy-Efficient Windows packages pair U-factor and SHGC ratings to the exact exposure of each opening.
Low-E & Argon Gas Glass
Signs you need it
Your windows fog or run wet on the interior glass every morning, and the glass itself is cold to the touch on any day below 55 degrees.
What it costs in San Leandro
Low-E and argon gas glass upgrades in San Leandro add $150 to $450 per window over a standard double-pane unit.
How we do it
We spec the glass package by orientation: low solar gain on west-facing glass, lower U-factor on north-facing glass, and document the rating labels on the invoice.
ENERGY STAR Replacement Windows
Signs you need it
Your gas or electric bill spikes in the winter while the windows themselves feel like radiator surfaces leaking heat into the fog-cooled night.
What it costs in San Leandro
ENERGY STAR replacement windows in San Leandro run $950 to $1,900 per unit installed, full-frame, with the glass package included.
How we do it
We install the rated unit, air-seal the rough opening, replace failing weatherstripping, and leave you the NFRC label and the written warranty.
What Energy-Efficient Windows Costs in San Leandro
| Item | Typical range in San Leandro |
|---|---|
| ENERGY STAR replacement window (per unit) | $950 - $1,900 |
| Low-E and argon gas upgrade (per window) | $150 - $450 |
| Full-frame replacement with air sealing (per opening) | $1,100 - $2,000 |
What U-factor should I use in San Leandro?
For the flatlands’ nightly marine layer, a U-factor of 0.30 or lower makes a visible difference on north-facing and east-facing glass. The written quote we give you names the U-factor and SHGC for every unit before you decide. Call (509) 265-6387 for that written number.
Will new windows stop the condensation in my San Leandro house?
Energy-efficient double-pane windows reduce the temperature difference at the glass surface, which cuts condensation substantially. You’ll still see some on extreme fog nights if interior humidity is high, but the constant wet sills go away. Estimates are free at (509) 265-6387.
Sliding & Patio Doors in San Leandro
Sliding and patio doors in San Leandro take the worst of the salt air and fog that roll out of the coastal gap, which is why the original aluminum sliders from the 1950s and 60s are so often seized at the track. Bottom rails pit, rollers corrode, and the weatherstripping compresses until the door leaks air all night. We replace the entire assembly rather than band-aiding the hardware. Our Sliding & Patio Doors work starts with a measured survey and a written number for the whole door.
Patio Doors
Signs you need it
The door drags along the track, the lock no longer aligns, or daylight shows through the weatherstripping at the meeting stile.
What it costs in San Leandro
Patio door replacement in San Leandro runs $2,400 to $5,200, with the higher end reflecting rot repair at the threshold and full-frame work.
How we do it
We remove the old sliding panel and frame, inspect the threshold and subfloor for moisture damage, and set the new unit with new flashing and a new threshold.
Impact Sliding Glass Doors
Signs you need it
The existing slider is a single-pane aluminum unit from the original build, and it flexes visibly when you press on the center of the glass.
What it costs in San Leandro
Impact sliding glass doors in San Leandro run $3,200 to $6,500 for the full tested assembly, installed.
How we do it
We install the impact-rated frame and laminated glass as a single tested unit, fasten it per the manufacturer’s wind-load schedule, and photograph the full installation.
What Sliding & Patio Doors Costs in San Leandro
| Item | Typical range in San Leandro |
|---|---|
| Patio door replacement (full assembly) | $2,400 - $5,200 |
| Impact sliding glass door (tested assembly) | $3,200 - $6,500 |
| Threshold and subfloor rot repair | $250 - $550 |
Why is my San Leandro sliding door so hard to open?
The rollers on original flatland sliders are typically corroded by salt air and the bottom track is pitted, so the door grinds instead of glides. Cleaning won’t fix hardened rollers. A written replacement estimate is free at (509) 265-6387.
Will a new patio door stop the draft in my San Leandro house?
A new patio door with fresh compression weatherstripping and an intact threshold stops the air movement that a 50-year-old slider can’t. We also check the rough opening for gaps that no door can seal. Call (509) 265-6387 for a written quote.
Impact Garage Doors in San Leandro
Impact garage doors in San Leandro protect the largest single opening in the house from wind-driven debris and the daily corrosive load of salt air off the Bay. The original wood or thin-steel doors on 1950s tract homes were never rated for San Leandro’s wind corridor, and most have lost their structural bracing at the panel joints. Our Impact Garage Doors work replaces the door, the track, and the hardware as one system.
Hurricane-Rated Garage Doors
Signs you need it
Your existing garage door is a hollow-core wood or thin-steel panel door from the original build that buckles under hand pressure.
What it costs in San Leandro
Hurricane-rated garage doors in San Leandro typically run $3,800 to $8,500 for a single-bay door with the reinforced track assembly.
How we do it
We remove the existing door and tracks, install the impact-rated door with the manufacturer’s specified bracing, and re-balance the tension system.
Garage Door Replacement
Signs you need it
The panels are rotted or corroded, the door is off its track alignment, or the opener strains against a door that no longer moves square.
What it costs in San Leandro
Garage door replacement in San Leandro runs $2,800 to $6,500, with the higher end covering impact-rated bracing and full track replacement.
How we do it
We remove the old door and rails, check the jamb framing, install the replacement door and hardware, and verify the balance and opener limits.
What Impact Garage Doors Costs in San Leandro
| Item | Typical range in San Leandro |
|---|---|
| Hurricane-rated garage door (single bay) | $3,800 - $8,500 |
| Standard garage door replacement (single bay) | $2,800 - $6,500 |
| Track and hardware replacement | $450 - $1,000 |
Do I need an impact-rated garage door if I live inland from the Bay?
Even San Leandro homes east of 580 sit inside the East Bay wind corridor, and garage doors are the most common failure point in wind events. A wind-load-rated door beats a standard door in any storm track. Reach us at (509) 265-6387 for a written price.
Will the garage door opener work with a new impact door in San Leandro?
Impact-rated doors are heavier than standard panels, so the opener and springs need to be matched to the increased weight. We include that assessment in the written quote rather than leaving it as a surprise. Call (509) 265-6387.
Custom & Geometric Windows in San Leandro
Custom and geometric windows in San Leandro come up most often when homeowners renovate the 1950s ranches and the rare Spanish Revival homes, or when an existing arched or trapezoid window finally fails. The flatlands’ salt air doesn’t care about geometry: a curved top rail corrodes just like a straight one. Our Custom & Geometric Windows work is built to the opening, not forced from stock sizes.
Geometric & Shaped Windows
Signs you need it
The existing trapezoid or parallelogram window has failed at the mitre joints, or the glass is single-pane and the frame is corroded at the corners.
What it costs in San Leandro
Geometric and shaped windows in San Leandro run $1,800 to $4,500 per unit, depending on the number of corners and the glass type.
How we do it
We template the actual opening with exact angles, order the unit to the measured geometry, and install it with the same flashing and air-sealing as any standard window.
Arched & Curved Windows
Signs you need it
The curved frame shows visible corrosion or moisture staining at the spring line, or the old single-pane glass has developed a crack through the arc.
What it costs in San Leandro
Arched and curved window replacement in San Leandro runs $2,200 to $5,800, with custom shapes and impact glazing at the top of that range.
How we do it
We take a physical pattern of the curve, build the new frame to match, and install it with a continuous sill flashing that prevents the moisture failure that killed the original.
What Custom & Geometric Windows Costs in San Leandro
| Item | Typical range in San Leandro |
|---|---|
| Geometric or shaped window (per unit) | $1,800 - $4,500 |
| Arched or curved window (per unit) | $2,200 - $5,800 |
| Custom impact-rated geometric window | $3,000 - $7,000 |
Can you match the odd-sized windows in my San Leandro ranch?
Yes, geometric and shaped windows are measured to the exact opening, not pulled from a stock size list. The template is part of your written survey, so the order is built to your wall. Get a free written estimate at (509) 265-6387.
How long does a custom window take to get in San Leandro?
Custom geometric or arched windows take four to seven weeks from template to delivery, because each unit is fabricated to the measured shape. We schedule the install date when we place the order. Call (509) 265-6387 for the written timeline and price.
Brands We Service in San Leandro
Sightline services and installs window and door products from PGT, CGI, CWS, and ViewLux, among others. Parts and hardware stock are maintained locally for common San Leandro flatland sizes, and most standard components are on hand within a few days. See our brands for the full line card.
Pricing for Windows & Doors in San Leandro, CA
| Service | Typical range in San Leandro |
|---|---|
| Single or double hung window (full-frame) | $900 - $1,800 |
| Horizontal roller window replacement | $850 - $1,700 |
| Impact-resistant window | $1,200 - $2,400 |
| ENERGY STAR replacement window | $950 - $1,900 |
| Patio door replacement | $2,400 - $5,200 |
| Impact sliding glass door | $3,200 - $6,500 |
| Hurricane-rated garage door | $3,800 - $8,500 |
| Geometric or shaped window | $1,800 - $4,500 |
| Arched or curved window | $2,200 - $5,800 |
| Sill or rough-opening rot repair | $175 - $450 |
Prices in San Leandro push higher when hidden sill rot behind the stucco flange requires framing repair before a new window can go in, or when a 4/9 door rough opening needs re-framing for a modern pre-hung unit. The written quote you get from the measured survey is the final number, never a starting point.
Neighborhoods We Serve in San Leandro
Sightline serves every neighborhood in San Leandro, from the flatland tracts west of I-880 to the hills above 580. We know which blocks have the worst salt-air corrosion and which still carry original 1950s aluminum sliders. Response time for a measured survey is typically one to three business days across the area.
- Washington Manor
- Davis Tract
- Assumption Parish area
- Bonaire
- Estudillo Estates
Service Area - Cities Near San Leandro
Sightline also works across the nearby East Bay cities of Castro Valley, CA, Oakland, CA, Alameda, CA, and Union City, CA. The same written-price standard and measured survey apply in every one of these communities.
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 About Windows & Doors in San Leandro
We schedule measured surveys in San Leandro within one to three business days in most weeks. The survey is the document you keep, and the written quote is built from it before any work is discussed. Call (509) 265-6387 to set a time.
San Leandro requires permits for window and door replacement when the opening size changes or structural work is involved, and we pull permits and schedule inspections when the scope calls for it. For a like-for-like full-frame replacement with no structural change, a permit is often not required, and we tell you which applies to your job in the written scope. Call (509) 265-6387 with your address and we’ll check the requirements before you commit to anything.
San Leandro’s marine-layer humidity and salt air mean more hidden rot and corrosion behind the frames, which turns simple insert jobs into full-frame replacements. The labor and materials to remediate that damage are real costs, and we name them in writing before work starts. Call (509) 265-6387 for a free written estimate on your specific openings.
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 Leandro Customers Say
"Replaced eight windows. They showed me the U-factor on the units they were actually fitting rather than the brochure numbers."
- Kofi B."They photographed the rotten sill they found under the old frame before replacing it, and the extra cost was agreed in writing before they carried on."
- Rosalind C."Front door install went smoothly. Written warranty, clear price, no pressure to upgrade anything."
- Nils H.