Window Replacement Contractor in Los Gatos

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.

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.

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.

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.

A typical Los Gatos home with 15 to 20 windows costs $12,000 to $25,000 for a full replacement with mid-grade vinyl or fiberglass windows (Hamilton Exteriors 2024-2026 project data). Premium wood or wood-clad windows from Andersen or Marvin run $18,000 to $35,000. Every Hamilton Exteriors estimate is itemized — window units, trim, flashing, labor, and cleanup listed separately. Call (650) 977-3351 for a free on-site estimate.

Yes. The Los Gatos Building Division requires a building permit for window replacement. Permit fees range from $200 to $600 depending on the scope of work. We handle the entire permit process — application, plan submission, and scheduling inspections. Permit fees appear as a separate line item in your estimate.

For valley floor homes that experience hot summers, casement windows with Low-E glass and a low Solar Heat Gain Coefficient provide the best energy performance. For hillside homes with views, picture windows maximize the view while providing the best insulation. Double hung windows are the most versatile choice for Craftsman and Victorian homes. We will recommend the best options during your on-site consultation.

A typical Los Gatos home with 10 to 15 windows takes 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 or custom sizes may take 3 days. We install one window at a time and seal each opening before moving to the next, so your home is never left open to the elements.

The federal Energy Efficient Home Improvement Credit ended for improvements made after December 31, 2025. A new 2026 window installation does not qualify for that credit. Verify any utility rebate directly with the program before ordering, including eligible products, installation dates, and available funding.