Window Contractor in Union City

We serve six Bay Area counties — Alameda, Contra Costa, Marin, Napa, San Mateo, and Santa Clara — covering 47 cities from Oakland to San Jose. Our crews are based in Castro Valley, putting us within 45 minutes of every city we serve. We handle permits and know the building codes for each jurisdiction, which matters because requirements and fees vary significantly between cities.

We offer $0-down financing with approved credit, 12-month same-as-cash plans, and extended terms up to 15 years for larger projects. You only pay for completed, inspected work — we never ask for full payment before the job is done. Your project manager will walk you through every option during your estimate appointment. We also accept checks, ACH, and all major credit cards.

Yes. CSLB License #1078806 — verify it anytime at cslb.ca.gov. We carry $2M general liability, full workers’ comp, and are bonded per California law. We hold GAF Master Elite, Owens Corning Preferred, CertainTeed ShingleMaster, and James Hardie Elite Preferred certifications — each requires annual training and quality audits to maintain. We’re happy to provide proof of insurance before any work begins.

Most exterior projects in the Bay Area require a building permit. Fees vary by city — Oakland runs $200–$600, Peninsula cities often more. We handle the entire permit process: application, plan submission, and scheduling inspections. Permit fees appear as a separate line item in your estimate so you’ll see every cost upfront. For homes in WUI fire zones (Berkeley Hills, Oakland Hills, parts of Marin), we ensure full compliance with local fire-rated material requirements.

Replacement windows in Union City typically cost $400-$1,200 per window depending on size, style, and glass options. With Alameda County energy rebates, many Union City homeowners save on the total cost. We provide free in-home quotes.

The best window style depends on your home's architecture and ventilation needs. Double hung windows are our most popular in Union City for their classic look and easy cleaning. For homes in Searles, casement windows offer superior airflow and modern aesthetics.

Most window replacement projects in Union City take 1-2 days for a full home. We install from the exterior whenever possible to minimize disruption to your daily life.

Absolutely. Union City homeowners with dual-pane Low-E windows typically save 15-25% on energy bills. With median home prices at $1,050,000, new windows also boost resale value. Many Alameda County utility rebates are available.

Yes, we install bay, bow, picture, garden, and specialty windows throughout Union City and Alameda County. Bay windows are especially popular in neighborhoods like Alvarado where they maximize natural light and views.

Window replacement in Union City typically costs $600-$1,500 per window installed, depending on size, style, and glass package. A whole-house project for 10-15 windows ranges from $8,000-$20,000. Energy-efficient options may qualify for rebates that offset the investment.

Upgrading from single-pane to dual-pane Low-E windows can reduce heating and cooling costs by 15-25% in Union City. Homes with original aluminum-frame single-pane windows see the most dramatic improvement. The energy savings typically offset the investment over 8-12 years.

Union City's housing stock features diverse architectural styles. Double-hung windows complement traditional and Craftsman homes. Casement and awning styles work well for mid-century and contemporary designs. Hamilton Exteriors helps match window style to your home's character while maximizing energy performance.

Title 24 requires minimum U-factor and SHGC ratings for replacement windows in Union City's climate zone. All windows we install meet or exceed current Title 24 standards. We handle compliance documentation and ensure your project passes final inspection.

Most window replacement projects in Union City take 1-3 days for a full house (10-15 windows). Each window swap typically takes 1-2 hours. We install from the exterior when possible to minimize interior disruption and clean up thoroughly each day.