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Fast, Reliable Window Replacement Across San Leandro
Window replacement in San Leandro usually costs between $650 and $1,450 per window for insert retrofits, and $1,100 to $2,800 per opening when full frame work is needed. Most jobs are done in a single visit, often within two to three weeks of your estimate. If you live in Washington Manor, Broadmoor, Estudillo Estates, or the Marina District, we’re familiar with what’s behind your walls because we’ve opened hundreds of them here. Call (888) 635-0804 and a live person answers, not a phone tree.
TruePane has been setting glass in the East Bay long enough to know that a San Leandro window is rarely just a window. It’s the first line against salt fog off San Leandro Bay, the thing that keeps Diablo wind gusts from whistling through your living room in October, and the difference between a quiet kitchen and one that sounds like it’s outside. We measure every opening twice, quote you on paper, and register both warranty layers in writing before we leave your driveway.
Key Takeaways
- San Leandro insert replacements run $650-$1,450 per window; full frame work $1,100-$2,800 per opening.
- Homes in Washington Manor and Broadmoor often have hidden subframe rot behind original 1950s aluminum sliders.
- We’re an authorized installer for, and more than a dozen other lines.
- Every job carries the Done Right Promise and The Keystone Standard: both warranty layers registered in writing.
- Call (888) 635-0804 for a free, line-item estimate. A person answers.
Why TruePane Windows & Doors Is San Leandro’s Preferred Window Replacement Company
We’re not a franchise truck that rolls through San Leandro twice a year. Dale Kessler founded TruePane in 2008 on a simple rule he writes on the shop whiteboard: if the pane is not true, the job is not done. That rule governs every install our crew makes in San Leandro, from a simple insert in a Broadmoor rancher to a full buck-out in the Marina District where salt fog has eaten the framing.
Our technicians are background-checked, uniformed, and local. They know that Washington Manor homes were built on fill that settles, that broad window openings on 1950s tract homes often had undersized headers from the day they were framed, and that the permit desk at San Leandro City Hall wants to see the waterproofing detail before they’ll sign off. This is not knowledge you get from a training video. It’s knowledge you get from doing the work in this city, year after year.
San Leandro homeowners call us because we answer the phone. Day or night. A human picks up at (888) 635-0804, and that human can usually tell you what’s behind a drafty slider before we even set the appointment. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, but the crews serving San Leandro live and work here. We’ll be there when we say.
Our Window Replacement Services in San Leandro
Here’s what we actually do in San Leandro, street by street, house by house. Each of these services starts with an inspection of the existing opening, because what’s behind the old window determines what’s possible. That’s not a sales pitch. It’s the truth about working on mid-century homes.
Full Frame Replacement
Full frame replacement means pulling the entire old window and frame out of the rough opening down to the studs. In San Leandro, this is often the only honest option for Washington Manor and Broadmoor homes where 1950s aluminum sliders have been quietly leaking through corroded weep holes for decades. When we pull the old unit, we can see what the water did to the king stud and sill plate. Then we fix it, flash it properly with butyl tape, and set the new window square. A full frame replacement in San Leandro generally starts around $1,100 per opening and goes up depending on the rot repair and trim work involved.

Insert Window Replacement
An insert window fits inside the existing frame and is the right call when the frame is still sound. It’s faster and less invasive. For San Leandro ranchers where the original opening is straight and the wood is dry, inserts run $650 to $1,450 per window, installed. We’ll tell you honestly if your frame won’t support one. In our experience, roughly half the homes we see in Washington Manor qualify for inserts. The other half need what we find after removal.

Storm Window Replacement
Storm windows matter in San Leandro, especially on the west side of town where winter storm fronts coming off the Bay hit the Marina District head-on. A properly fitted storm window adds a layer of protection against wind-driven rain and salt spray while preserving the look of older architecture. We replace and reset storm windows of any age, matching the original sightlines where possible. This is common work on pre-war homes near Estudillo Estates, where the original storm units are often part of the house’s character.

Energy-Efficient Upgrade
San Leandro’s marine layer means the air is humid even when it’s cool, and fall Diablo winds can spike temperatures 20 degrees in an afternoon. That cycle punishes old dual-pane seals. When we upgrade a home to energy-efficient windows in San Leandro, we’re not just swapping in low-E glass and argon fill. We’re selecting glass packages that handle the specific moisture and thermal shock profile of the East Bay shoreline. In practical terms, a well-done energy upgrade on a typical San Leandro ranch will cut the fogging problem for good and noticeably reduce heating costs during the winter months when that bay breeze finds every gap in the house.

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.
Trusted Brands We Service in San Leandro
We’re authorized installers for more than a dozen manufacturer lines, and for San Leandro we lean heavily on products that hold up to salt air and moisture cycling. Milgard Tuscany and Trinsic series are frequent choices because the vinyl frames don’t corrode the way old aluminum did. ES Windows and CGI offer strong options for homeowners who want elevated coastal durability without stepping into full impact-rated pricing. We quote manufacturer lines side by side, on paper, so you can see exactly what you’re buying before you sign. That’s the Keystone Standard at work.
Common Window Replacement Problems We See in San Leandro Homes
- Hidden subframe rot behind corroded weep holes. On a Washington Manor ranch near Bancroft Middle School, our crew pulled a 1954 aluminum slider to find the weep holes completely oxidized shut. Moisture had wicked into the sill and rotted the king stud. This is not rare in San Leandro; it’s the single most common surprise we uncover, and it’s why out-of-area installers who quote a simple retrofit end up walking off the job or hitting the homeowner with a change order they never saw coming.
- Fogged seals from marine humidity and Diablo thermal shock. Year-round moisture along the Bay-facing side of San Leandro weakens dual-pane seals. Then a hot, dry fall Diablo wind hits. The sudden thermal shock fails the seal and the window fogs. We see this pattern most often in the Marina District and the western third of the city.
- Aluminum frames swollen and seized by salt air. Original 1950s aluminum sliders oxidize over time in San Leandro’s marine air. The tracks get gritty, the frames warp slightly, and eventually the window doesn’t slide or seal. By then, water’s been getting in for years around the sashes.
- Undersized or damaged framing from original construction. Postwar tract builders in San Leandro worked fast. We routinely find headers that were undersized even by 1950s code, let alone what the city requires today. When a permit comes into play, which it often does once we’re into structural work, the framing gets corrected before the new window goes in.
Pricing for Window Replacement in San Leandro, CA
A typical insert window replacement in San Leandro runs $650 to $1,450 per opening, installed. Full frame replacement on a 1950s ranch generally starts around $1,100 and can reach $2,800 per opening when hidden rot requires framing repair, new flashing, and interior trim. Storm window replacement tends to fall between $350 and $800 per unit depending on size and installation method. Energy-efficient upgrades add roughly $75 to $200 per window in glass package costs above the base line, and the total depends on how many windows and whether you’re doing inserts or full frame work.
| Service Type | Typical Range (per opening) |
|---|---|
| Insert Window Replacement | $650 - $1,450 |
| Full Frame Replacement | $1,100 - $2,800 |
| Storm Window Replacement | $350 - $800 |
| Hidden Rot Repair (if discovered) | $200 - $900 additional |
We write change orders for any rot repair and get your written approval before we touch the framing. No one wants a surprise bill. Call (888) 635-0804 for a free written estimate with line items you can read.
We Also Serve Cities Near San Leandro
Our crews cover San Leandro every day of the week, and we regularly work in San Lorenzo, Castro Valley, Oakland, and Alameda. Many of the same mid-century issues we see in San Leandro show up across the East Bay, but the specific combination of bay fog and Diablo wind cycles is most pronounced right here along the San Leandro shoreline. Wherever you are in the East Bay, the same Done Right Promise applies. Call (888) 635-0804 and you’ll get a live person and a straight answer.
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
There’s a simple reason: San Leandro’s 1950s aluminum sliders in Washington Manor and Broadmoor were typically installed with weep holes that corroded shut decades ago, allowing moisture to run directly into the rough framing. By the time we pull the old window, the sill plate or king stud is often too far gone to hold a new unit. San Leandro’s building department requires the framing be corrected to current code before any window is set into a compromised opening, which triggers a permit. Where the frame is sound, which is often the case in newer parts of the East Bay, an insert can go in without structural work. If we find rot on your job, we write a change order and get your signature before any repair begins. Call (888) 635-0804 to schedule an inspection and learn whether your home qualifies for a simple insert or will need full frame work.
Airborne salt particles from San Leandro Bay settle on aluminum frames, hardware, and glass along the Marina District and western edge of the city. Over years, the salt accelerates oxidation: frames pit, weep holes clog, and steel screws and slide hardware rust and bind. This is why Marina District windows fail faster than the same product installed five miles inland in Castro Valley or Dublin. The right fix is a window built for coastal exposure with non-corroding frame material and marine-grade hardware. We spec those lines daily for San Leandro homes. Call
An insert window goes into the existing frame, assuming the frame is structurally sound and dry. A full frame replacement removes everything down to the rough opening, exposing the studs and sill plate, so rot can be repaired and the opening re-flashed properly before the new window goes in. On a 1950s San Leandro ranch, the choice is usually made by what we find when the old aluminum slider comes out; if the frame is dry, an insert is fine. If moisture got to it through corroded weep holes, which is common in Washington Manor and Broadmoor, you need full frame work. We inspect first and tell you honestly which is right. Call
They contribute to it. The years of high humidity from San Leandro’s marine layer gradually degrade dual-pane seals. Then a Diablo wind event brings sudden hot, dry air that creates thermal shock, and the weakened seal fails. The result is fogging between the panes. It’s a known pattern on the west side of San Leandro, and the solution is a quality dual-pane unit with a seal system designed for thermal cycling on the coast. If you’re seeing intermittent fogging that clears when the day warms up, call us at
Depending on what we find, hidden rot repair typically adds $200 to $900 per opening to the total window replacement cost in San Leandro. That covers removing the damaged framing members, replacing them with properly sized lumber, re-flashing the rough opening, and bringing the structural work up to current code. We write it as a separate line item on a change order, and you approve it in writing before we proceed. If you want a contractor who will quote the full potential scope upfront so there are no surprises, call
If your windows are drafty, fuzzy, or hard to open, and you live in San Leandro, call us. We’ll inspect the openings, tell you exactly what you need and what it costs, and put the numbers on paper. No pressure. No fine print. Just the straight story from a company that’s been doing this work in East Bay homes since 2008, backed by the Done Right Promise and The Keystone Standard. Call (888) 635-0804 today. A live person answers, and estimates are free. Written by Dale Kessler, Owner at TruePane Windows & Doors, serving San Leandro and the East Bay with straight, true glass since 2008.Call TruePane for a Free San Leandro Window Replacement Estimate
Why San Leandro Chooses TruePane Windows & Doors
We set the standard for window replacement in San Leandro.
Factory-Direct Pricing
Authorized partner pricing with no distributor markup - premium aluminum systems at wholesale-anchored rates.
Engineered to Order
Any shape, size, or specification, fabricated to your exact opening with one-on-one engineering support.
Certified Installation
Set level, plumb, and square to AAMA standards in San Leandro - warranty-safe, every time.
How It Works in San Leandro
Getting your window replacement handled is simple and fast.
Call or Request a Free Estimate
Tell us about your window replacement needs and we provide an upfront, transparent quote - no obligation, no hidden fees.
Licensed Technician Dispatched
A background-checked, certified technician arrives in San Leandro - typically within 30-60 minutes, with parts stocked on the truck.
Problem Solved, Guaranteed
We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.
What San Leandro Customers Say
Trusted by homeowners across San Leandro and surrounding areas.
"Our bay window had rotted at the sill and two other outfits wanted to talk us into a flat picture window instead. TruePane rebuilt the opening and matched the original look. Neighbors have knocked on the door about it."
"Two entry doors. Showed up when they said, second day was a half day like they said, and the painter they recommended confirmed the frames were dead plumb. The financing was explained in actual dollars, not a brochure."
"Impact windows on the whole house. They handled the permit, the inspection, and gave me a folder with every approval number for the insurance company. My windstorm premium dropped enough to notice."
Our Work in San Leandro
A look at recent windows & doors projects across San Leandro and surrounding areas.
Current Offers
Bring these savings to your next appointment.
Free On-Site Estimate & Written Quote
No obligation. We measure, price the job in writing, and the quote is yours to keep.
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