Most 1940s-50s homes still have original wood-frame single-pane or early aluminum sliders — huge replacement market. BART noise near Bayfair/San Leandro stations drives acoustic glazing. Egress sizing issues in 1940s-50s cottage bedrooms.
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Window Replacement Contractor in San Leandro
500+ projects
Since 2018
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For local cost factors and planning, read our Window replacement cost guide for San Leandro.
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Send your window count and project details. We will schedule measurements and review the product and installation options with you.
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Responsive from consultation through project closeout
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Window Styles 
Choose the Window Style That Fits the Opening
Single-Hung Windows
A fixed upper sash and operable lower sash for familiar operation, ventilation, and a straightforward replacement path.
Single-Slider Windows
Horizontal operation where exterior swing clearance is limited, with the opening and drainage details measured before ordering.
Sliding Glass Doors
Large glazed openings coordinated with sill support, flashing, drainage, operation, safety glass, trim, and adjacent finishes.
Picture Windows
Fixed glass for daylight and views, planned around glass size, exposure, energy ratings, structural support, and interior trim.
Double-Hung Windows
Two operable sashes for flexible ventilation, with frame proportions and trim selected for the home and opening.
Casement Windows
Hinged windows with compression seals, planned around swing clearance, hardware access, ventilation, and egress needs.
San Leandro's housing stock spans 15% pre-1940, 35% 1940-1960, 25% 1960-1985. Architectural styles range from 1920s-40s Craftsman and Spanish Colonial Revival in Estudillo Estates to 1940s-50s postwar ranch homes (dominant citywide). Each era and style presents different windows requirements — from material compatibility to structural considerations. Our crews know what to expect before they arrive on site.
Neighborhoods We Serve
Windows Across San Leandro Neighborhoods
Local planning starts with the site, neighborhood context, access, and applicable city review.
Floresta Gardens
Floresta Gardens homeowners frequently choose Hamilton Exteriors for windows. Most 1940s-50s homes still have original wood-frame single-pane or early aluminum sliders — huge replacement market. With San Leandro's Uniformly moderate and flat, material selection in Floresta Gardens requires local expertise.
Estudillo Estates
In Estudillo Estates, homes are predominantly 1940s-50s postwar ranch homes (dominant citywide). BART noise near Bayfair/San Leandro stations drives acoustic glazing. Our crews are familiar with Estudillo Estates's architectural character and building requirements.
Washington Manor
Washington Manor residences often retain original windows that compromise energy efficiency and comfort. Hamilton Exteriors has replaced windows throughout Washington Manor, selecting styles that complement each home's architecture while meeting current Title 24 energy standards. Our installations reduce drafts, noise, and utility costs.
Marina
Marina residences often retain original windows that compromise energy efficiency and comfort. Hamilton Exteriors has replaced windows throughout Marina, selecting styles that complement each home's architecture while meeting current Title 24 energy standards. Our installations reduce drafts, noise, and utility costs.
Broadmoor
Broadmoor residences often retain original windows that compromise energy efficiency and comfort. Hamilton Exteriors has replaced windows throughout Broadmoor, selecting styles that complement each home's architecture while meeting current Title 24 energy standards. Our installations reduce drafts, noise, and utility costs.
Project Management How Hamilton Exteriors
How Hamilton Exteriors
Manages Your Window Replacement
Opening Measurements
We measure each opening and review frame conditions, drainage, egress, safety glass, and trim before ordering.
Window and Glass Selection
Your proposal identifies the manufacturer, operating style, frame, glass package, energy rating, finish, hardware, and installation method.
Flashing and Installation
We coordinate removal, opening repairs, sill and perimeter flashing, insulation, window setting, trim, sealants, and permits.
Operation and Closeout
We test operation and locks, check sealants and finishes, complete cleanup, and review applicable product and workmanship warranties.
Google rating 4.6 ★ from 47 public reviews
Window Project Reviews
Verified public reviews from homeowners who hired Hamilton Exteriors.
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Renee D.
via HomeAdvisor
I scheduled to have someone come give me an estimate for all new windows in our 1950s home with not so great Remodeling work by previous owners. Alex Li promptly met with us & his crew throughout the entire process. They were always on time to work, left our home clean of debris & spectacular new JeldWin windows. Helped me with getting Financing as well...Just all around a great experience & highly recommend!
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Ethan W.
via HomeAdvisor
I recently hired Hamilton Exteriors to replace my siding and windows, and they did a fantastic job. Their team was punctual, polite, and paid close attention to detail. The siding looks seamless, and the new windows have made a noticeable difference in both appearance and energy efficiency. Communication was always clear, and they finished on time and within budget. I’m very happy with their work and would definitely recommend them.
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Robert H.
via Angi
From the very first consultation, we knew we'd made the right choice. The team was knowledgeable and genuinely listened to our concerns about energy efficiency and design. We've already noticed a drop in our energy bills.
H
H.T.
via Google
I had a great experience working with Hamilton exteriors. From start to finish, their team was professional, responsive, and detail-oriented. They made the entire process smooth and stress-free, keeping me updated every step of the way. The quality of their work really stands out. Everything was done efficiently and exceeded my expectations. If you’re looking for a reliable company that takes pride in what they do, I highly recommend them!
Google rating: 4.6/5 from 47 public reviews
Read reviews on Google Mid Market
Windows Costs in San Leandro
$450–$800 per window
Median home value in San Leandro: $900,000
Prices reflect San Leandro's mid market and Alameda County labor rates. Actual costs depend on home size, materials, and project complexity. We provide free, itemized estimates with no hidden fees.
Get Your EstimateCompare Broad Window Operation Types
Swipe to compare all options.
| Feature | Single Hung | Double Hung | Casement | Slider | Picture |
|---|---|---|---|---|---|
| Operation | Lower sash moves | Both sashes move | Hinged sash opens | One sash slides | Fixed glass |
| Ventilation path | Lower opening | Upper and lower openings | Full sash opening | Half of frame opening | None |
| Clearance review | Interior access | Interior access | Exterior swing area | Track and meeting rail | Glass and trim access |
| Main detail focus | Sash balance and seal | Two sash seals | Hardware and compression seal | Track and drainage | Glass, frame, and flashing |
| Dedicated guide | Single hung | Double hung | Casement | Single slider | Picture window |
Window Financing
Plan Your Window Replacement With Approved Credit
Financing may be available for eligible multi-window and whole-home replacement projects with approved credit. During your window consultation, we review the product and installation scope, then explain current lender programs, terms, and payment timing.
Ask which current options fit your window replacement project.
Call Now (650) 977-3351 Frequently Asked Questions
Didn't find the answer to your question? Call Now (650) 977-3351
What areas do you serve?
We serve Northern California across three regions: the San Francisco Bay Area, Greater Sacramento, and the Central Valley. Our published guides cover 14 counties and 88 cities. Our Castro Valley and Sacramento offices support local estimating, permit coordination, and project planning across these regions.
How does billing and financing work?
Financing may be available for eligible projects with approved credit. Available terms depend on lender approval, project scope, and current programs. Your project manager can review the options that apply before work begins. We also accept checks, ACH, and major credit cards.
Are you licensed and insured?
Yes. Hamilton Exteriors holds CSLB License #1078806, active general liability coverage, and the required contractor bond. We also hold GAF Master Elite and James Hardie Elite Preferred credentials. We can provide current proof of coverage before work begins.
Do I need a permit for my exterior project?
Permit requirements depend on the project scope and local jurisdiction. Hamilton Exteriors coordinates required applications, plan documents, corrections, and inspections. Permit fees and allowances appear in the proposal before construction begins.
How much does window replacement cost in San Leandro?
A typical San Leandro home with 15 to 20 windows costs $12,000 to $25,000 for a full replacement using standard vinyl double-hung windows. Per-window pricing ranges from $600 to $1,500 installed depending on style and frame material. Every Hamilton Exteriors estimate is itemized so you see each cost component. See our cost guide for a detailed breakdown.
Do I need a permit for window replacement in San Leandro?
Yes, if you are changing the size or location of window openings. The San Leandro Building Department requires permits for structural modifications. Hamilton Exteriors handles all permit applications and inspections for you.
How long does a window replacement take in San Leandro?
Most San Leandro homes with 10 to 15 windows take 1 to 2 days. Each window takes approximately 45 to 90 minutes to remove, prep, install, insulate, flash, and trim. Larger projects with 20 or more windows may take 3 days. We install one window at a time and seal each opening before moving to the next.
What window styles work best for San Leandro homes?
Casement windows provide the best airflow and tightest seal for homes near the bay. Double-hung windows are the most versatile choice for Craftsman and Victorian homes. Sliding windows work well in mid-century modern homes. Picture windows are ideal for rooms with views where ventilation is not needed.
Do replacement windows qualify for energy rebates in California?
Yes. ENERGY STAR certified windows may qualify for federal tax credits of up to $600 under the Inflation Reduction Act (through 2032) (Hamilton Exteriors 2024-2026 project data). California also offers rebates through PG&E and other Bay Area utility programs. Hamilton Exteriors provides all documentation needed for rebate and tax credit applications.
Your Next Step
Plan Your Project With a Clear Scope
Financing may be available with approved credit for eligible projects.
Tell us about your project. We usually call within 3–5 minutes to schedule the next step.
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