Measure G energy ordinance imposes requirements beyond Title 24. Historic homes may need wood-profiled replacements. BART noise along Shattuck corridor drives acoustic glazing demand.
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Window Replacement Contractor in Berkeley
500+ projects
Since 2018
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For local cost factors and planning, read our Window replacement cost guide for Berkeley.
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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
Architect and general contractor
One accountable team
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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.
Berkeley's housing stock spans 40% pre-1930, 20% 1930-1950, 20% 1950-1975. Architectural styles range from Brown Shingle style homes (1890s-1910s) in North Berkeley Hills and Elmwood to 1920s Stucco Tudor and Mediterranean Revival in Thousand Oaks. 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.
Berkeley's commitment to sustainability and energy efficiency makes window upgrades particularly relevant. The city's Building and Safety Division actively enforces Title 24 energy standards and may require additional energy measures during window replacement. Hamilton Exteriors (CSLB #1078806) ensures all installations meet Berkeley's progressive building requirements.
The UC Berkeley campus and surrounding neighborhoods experience significant noise from university events, student activity, and Telegraph Avenue traffic. Sound-rated windows with laminated glass and proper sealing dramatically improve quality of life for homeowners in South Berkeley, Elmwood, and the Southside. We specify STC ratings appropriate to each home's noise exposure.
Berkeley's eclectic architecture from Julia Morgan-designed homes to brown-shingle Craftsman masterpieces requires window replacement that respects each building's heritage. Our estimators photograph and measure existing windows to source replacements that match original proportions, muntin patterns, and sight lines. This attention to detail preserves Berkeley's irreplaceable architectural character.
Neighborhoods We Serve
Windows Across Berkeley Neighborhoods
Local planning starts with the site, neighborhood context, access, and applicable city review.
Thousand Oaks
Thousand Oaks homeowners frequently choose Hamilton Exteriors for windows. Measure G energy ordinance imposes requirements beyond Title 24. With Berkeley's West Berkeley: heavy fog, 60-68°F summers, material selection in Thousand Oaks requires local expertise.
Westbrae
In Westbrae, homes are predominantly 1920s Stucco Tudor and Mediterranean Revival in Thousand Oaks. Historic homes may need wood-profiled replacements. Our crews are familiar with Westbrae's architectural character and building requirements.
North Berkeley
North Berkeley's Craftsman and brown-shingle homes are architectural treasures where window replacement demands period sensitivity. We install wood-interior windows with authentic divided-light profiles that honor the Arts and Crafts tradition while adding Low-E glass for efficiency.
Elmwood
Elmwood's tree-canopied streets feature charming bungalows with distinctive window patterns. We replace aging single-pane windows with energy-efficient units that replicate original proportions and grid layouts, maintaining the cohesive streetscape along College and Ashby Avenues.
Claremont
Claremont's larger homes near the Claremont Hotel feature varied window styles from Mediterranean arched openings to Craftsman multi-light designs. Our crews handle specialty shapes and custom configurations that complement each property's distinct architectural personality.
West Berkeley
West Berkeley's converted industrial spaces and modern live-work units often feature large commercial-style windows. We install energy-efficient aluminum-clad systems with expansive glass areas that suit the neighborhood's creative, open-plan aesthetic near Fourth Street.
Panoramic Hill
Panoramic Hill's steep terrain and Bay views make window selection critical. We install high-performance windows that frame views, resist hilltop wind loads, and meet fire safety requirements for this elevated neighborhood above the UC Berkeley campus.
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.
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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 Premium Market
Windows Costs in Berkeley
$500–$1,000 per window
Median home value in Berkeley: $1,400,000
Prices reflect Berkeley's premium 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 Berkeley?
Here are typical installed prices for window replacement in Berkeley. All prices include removal of the old window, new flashing, materials, labor, trim, and cleanup. Energy-efficient Low-E glass is standard on all windows. Pricing reflects Hamilton Exteriors 2024-2026 project data. | Window Type | Installed Price (per window) | Material Cost | |---|---|---| | Single Hung | $600 - $1,200 | $325 | | Double Hung | $700 - $1,500 | $375 | | Casement | $800 - $1,500 | $425 | | Single Slider | $600 -
How much does window replacement cost in Berkeley?
For a typical Berkeley home with 15 to 20 windows, expect to pay $12,000 to $25,000 for a full replacement (Hamilton Exteriors 2024-2026 project data). Per-window pricing ranges from $600 for a basic single slider to $4,500 for a bay window. All Hamilton Exteriors estimates are itemized with per-window pricing.
Do I need a permit for window replacement in Berkeley?
Yes. The City of Berkeley requires a building permit for window replacement. Permit fees range from $200 to $600 depending on the number of windows (Hamilton Exteriors 2024-2026 project data). Hamilton Exteriors handles the permit application and all required inspections.
What type of windows are best for Berkeley's climate?
Fiberglass or vinyl frames resist corrosion from Berkeley's coastal fog better than aluminum. For homes in the Berkeley Hills fire zone, tempered glass is required in windows within 10 feet of the ground. Casement windows provide the best ventilation for homes that rely on natural cooling from the bay breeze.
How long does window replacement take in Berkeley?
Most Berkeley homes with 10 to 20 windows take 1 to 3 days for full installation. Each window takes approximately 45 to 90 minutes to remove, prep, install, insulate, flash, and trim. We install one window at a time and seal each opening before moving to the next.
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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