Replacement windows in San Leandro, CA

Custom Exteriors replaces windows in San Leandro homes with Infinity by Marvin fiberglass windows, installed by our own full-time AAMA Certified Master Installers. We don't use subcontractors. We have served the East Bay from Pleasanton since 1997, with 30,000+ completed projects.

Whether you own a 1950s ranch in Washington Manor or a 1920s Tudor in Estudillo Estates, we match the window to the house and handle the permit for you.

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Why San Leandro homes are due for new windows

Most San Leandro homes are more than 70 years old, and many still have windows that are decades past their prime. The median home in the city was built in 1952, and almost 40% of homes went up between 1940 and 1960.

That history gives San Leandro two distinct kinds of homes, each with its own window needs:

Mid-century ranch homes. Washington Manor, Bonaire, and much of the city's south and west side were built in the postwar boom. Many still have original single-pane aluminum sliders or early replacement windows that are now failing.
Pre-war homes. Estudillo Estates and Broadmoor, in the north end near Oakland, have homes from the 1920s and 1930s in Tudor, Colonial, Spanish Revival, and Mediterranean styles. Here, window proportions and grille patterns define the look of the house.

Signs your windows are ready for replacement:

Cold rooms and drafts in winter, especially near single-pane glass.
Condensation on the inside of aluminum frames, or fog between panes.
Sashes that stick, won't lock, or have rotted at the bottom rail.
Outside noise from I-580, I-880, East 14th Street, or flight paths into Oakland International Airport.

Infinity by Marvin fiberglass windows for San Leandro homes

Infinity by Marvin windows are built from Ultrex pultruded fiberglass, which doesn't conduct cold like aluminum or rot like wood. Fiberglass expands and contracts at nearly the same rate as glass, so seals stay tight through years of temperature swings.

What that means for your home:

Warmer rooms in winter. Fiberglass frames insulate far better than original aluminum, so the cold doesn't come through the frame and condensation stops forming on it.
No rot, no warping. Frames hold their shape in damp bayside winters.
A painted look without repainting. The factory finish suits Tudor, Colonial, and Spanish Revival homes without the upkeep of wood.
Glass for Title 24. Low-E glass packages meet California's energy code. Learn how high-performance glass affects comfort.
Made to measure. Every window is built for your opening, not pulled from a standard size chart.

Custom Exteriors is an Infinity by Marvin Platinum Partner, and Infinity by Marvin windows are the only replacement windows we install. Comparing options? See our fiberglass vs. vinyl windows comparison and our guide to energy-efficient windows and patio doors.

Learn more about Infinity by Marvin windows

Window styles we install in San Leandro

The right style depends on your home's era and the room. These Infinity by Marvin styles fit most San Leandro homes:

Sliding windows. The natural replacement for original aluminum sliders in mid-century ranch homes.
Double-hung and single-hung windows. The traditional choice for Tudor and Colonial homes, with grille patterns to match the original.
Casement windows. A good fit for Spanish Revival and Mediterranean homes, and a tight seal against wind.
Picture windows. For mid-century living rooms and views from Bay-O-Vista.
Awning windows. Ideal over kitchen sinks and in bathrooms.
Bay windows. Adds light and depth to living and dining rooms.

Every style is on full-size display at our Pleasanton showroom.

Replacing windows on older San Leandro homes

Older homes need more care than a standard window swap. In Estudillo Estates and Broadmoor, replacement windows should match the original proportions and grille patterns so the house keeps its character. Our design consultants start with the architecture, then specify windows to fit it. See our guide to replacing windows in historic homes.

Most San Leandro homes were also built before 1978, so window frames and trim may have lead-based paint. Federal law requires lead-safe work practices when that paint is disturbed. Custom Exteriors is EPA Lead-Safe Renovation, Repair, and Painting (RRP) Certified, and we confirm whether lead-safe procedures apply before work begins. Learn more about window replacement for homes built before 1978.

San Leandro window permits

Window replacement in San Leandro typically requires a building permit from the City's Building Division, along with California energy code documentation. Custom Exteriors handles the permit, paperwork, and inspection as part of your project, so you don't have to manage it yourself.

Installed by our own crews, not subcontractors

Every Custom Exteriors window is installed by a full-time employee who is an AAMA Certified Master Installer. On a 70-year-old house, that matters: openings are rarely square, and the wood around old frames often needs repair.

Our installers choose the right installation method for each opening, whether that's a retrofit into the existing frame or a full-frame replacement when the old frame is damaged. Meet the Custom Exteriors installation team, or read why employee installers vs. subcontractors matters.

Why San Leandro homeowners choose Custom Exteriors

Serving the East Bay from Pleasanton since 1997, with 30,000+ completed projects
Full-time AAMA Certified Master Installers, not subcontractors
Infinity by Marvin Platinum Partner
Diamond Certified and BBB Accredited
EPA Lead-Safe RRP Certified for pre-1978 homes
Permits and inspections handled for you
Backed by our product and labor warranty

See what homeowners say in our customer reviews.

Frequently asked questions

Do I need a permit to replace windows in San Leandro? In most cases, yes. Window replacement typically requires a building permit from the City of San Leandro and energy code documentation. Custom Exteriors handles the permit and inspection for you.

Should I replace the aluminum windows in my 1950s home? If they are original single-pane aluminum, replacement is usually worth it. Aluminum conducts cold and heat, which causes drafts and condensation on the frames. Fiberglass windows insulate far better and won't corrode or sweat.

Can new windows match the style of my 1920s or 1930s home? Yes. Infinity by Marvin windows can be specified with the sash proportions and grille patterns that Tudor, Colonial, and Spanish Revival homes call for. Our design consultants match the window to the house, not the other way around.

How much does window replacement cost in San Leandro? Cost depends on the number of windows, their sizes and styles, the glass package, and whether each opening needs a retrofit or full-frame installation. Older homes often need more trim and framing work. We provide a detailed, itemized estimate after an in-home consultation. Our window cost guide explains what moves the number.

Will new windows reduce noise from the freeway or airport? Well-sealed fiberglass windows with the right glass package reduce outside noise noticeably compared with single-pane glass. Results depend on your current windows and your home's construction. Read more about noise-reducing windows.

How long does window replacement take? Installation for most homes takes one to a few days, depending on the number of windows and any framing repair. Because every Infinity by Marvin window is made to order, the full timeline also includes manufacturing lead time and permit approval. Your design consultant will give you a project-specific schedule.

Ready to replace the windows in your San Leandro home?

Schedule a no-pressure consultation and a design consultant will look at your current windows, show you style and glass options, and give you an itemized estimate. Prefer to see the windows first? Visit our showroom at 2142 Rheem Drive, Suite E, Pleasanton.

Schedule a no-pressure consultation | Visit our Pleasanton showroom Phone: (925) 249-2280

Financing options

We offer 18 months with no payments and 0% interest if the balance is paid in full within the promotional period, or 4.99% financing on approved credit. Ask about it during your consultation.

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