Window Replacement Contractor in Mill Valley

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.

Window replacement in Mill Valley costs $800 to $1,500 per window installed for standard sizes, depending on style and frame material (Hamilton Exteriors 2024-2026 project data). A typical home with 15 to 20 windows runs $12,000 to $28,000. Premium materials like fiberglass or aluminum-clad wood add 20 to 40 percent. Every Hamilton Exteriors estimate is itemized — window units, trim, flashing, labor, and cleanup listed separately.

Yes. Mill Valley requires a building permit for most window replacements, especially when changing sizes or creating new openings. Permit fees range from $200 to $600 (Hamilton Exteriors 2024-2026 project data). Hamilton Exteriors handles the entire permit process — application, plan submission, and scheduling inspections. For homes in WUI fire zones, we ensure full compliance with California Chapter 7A requirements.

Casement windows provide the best airflow and tightest seal — ideal for homes that rely on natural cooling from coastal breezes. Double-hung windows suit Craftsman and Victorian homes. Sliding windows work well in Eichler-style homes. Picture windows maximize natural light and views. Bay and bow windows add interior space to living rooms.

A typical Mill Valley home with 15 to 20 windows takes 1 to 3 days. 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, so your home is never left open to the elements.

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 utility programs — PG&E periodically offers incentives for energy-efficient window upgrades. Hamilton Exteriors provides all documentation needed for rebate and tax credit applications.