Bay Area Roof Replacement, Backed by a 50-Year Warranty

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.

Bay Area roof replacement costs start around $15,000 and can exceed $100,000 for large or complex projects with premium materials. Composite asphalt shingles run $940 to $1,125 per roofing square (100 sq ft) installed. Premium architectural shingles and designer options range from $1,075 to $1,525 per square. Metal roofing costs $1,200 to $1,800 per square but lasts 40 to 70 years. Tile roofing runs $1,400 to $2,200 per square and is common on Mediterranean-style homes throughout the Peninsula. Permit fees in most Bay Area cities add $500 to $2,000 depending on the jurisdiction and project scope. Every Hamilton Exteriors estimate is fully itemized — tear-off, underlayment, flashing, materials, labor, cleanup, and permit costs are all listed separately so you can see exactly where your money goes.

A standard asphalt shingle roof replacement typically takes 3 to 5 days from start to completion, including tear-off, underlayment, installation, flashing, and cleanup. Metal and tile roofs may take 5 to 7 days due to additional preparation and specialized fastening systems. Larger homes over 3,000 square feet or those with complex roof geometry — multiple valleys, dormers, or skylights — may extend the timeline by 1 to 2 additional days. Weather delays are uncommon in the Bay Area during dry season but can add time during winter months. We schedule all work around your availability, and your property is fully tarped and secured at the end of each workday. Every project gets a dedicated project manager who provides a specific timeline during your inspection and keeps you updated daily.

Our complimentary roof inspection covers a full assessment of your existing roof's condition. A Hamilton Exteriors project manager will examine shingle wear, granule loss, cracked or missing shingles, flashing around vents and chimneys, gutter condition, signs of water intrusion in the attic, and overall structural integrity. We also check ventilation — improper attic ventilation is one of the most common causes of premature shingle failure in the Bay Area. You'll receive a written report with photos documenting any issues found, along with a fully itemized estimate if work is recommended. The inspection typically takes 30 to 45 minutes, and there is no sales pressure — you're welcome to take your time deciding. If your roof has remaining life, we'll tell you that.

The best roofing material depends on your home's architecture, budget, and location. Composite asphalt shingles (GAF Timberline, Owens Corning Duration) are the most popular choice in the Bay Area — they offer excellent value, a 50-year system warranty, and Class A fire rating required by California building code. Metal roofing is ideal for fire-prone areas like the Oakland Hills and Berkeley Hills, reflecting 70% of solar radiant heat according to Oak Ridge National Laboratory research. Metal roofs also last 40 to 70 years with virtually zero maintenance. Clay and concrete tile roofs are popular on Mediterranean and Spanish-style homes throughout the Peninsula, offering exceptional durability and wind resistance. For homes with solar panels, we offer GAF DecoTech integrated solar roofing that combines energy generation with roofing protection. Your project manager will recommend the best material for your specific home during the free inspection.

Yes. Homes in California Wildland-Urban Interface (WUI) zones — common in the Berkeley Hills, Oakland Hills, parts of Marin, and Napa — must meet Chapter 7A fire-resistant building standards under California Building Code Section 705A. This requires Class A fire-rated roofing materials, non-combustible vents and eave assemblies, and fire-rated underlayment. Ember-resistant ridge vents and 1/8-inch mesh attic screens are also mandated to prevent ember intrusion during wildfires. Hamilton Exteriors specializes in WUI-compliant installations and will verify your property's fire zone designation through CAL FIRE's Fire Hazard Severity Zone map during your inspection. We handle all required documentation for building department approval, including the compliance forms that WUI jurisdictions require before issuing a final inspection sign-off.

Yes. Hamilton Exteriors provides emergency roof tarping and storm damage repair throughout the Bay Area. If your roof is leaking or has sustained wind, tree, or storm damage, call (650) 977-3351 and we'll prioritize getting a crew to your property — typically within 24 hours for active leaks. We carry emergency tarping materials on every truck during storm season. Temporary tarping prevents further water intrusion while a permanent repair or replacement is planned. For permanent repairs, we assess whether a targeted repair is sufficient or whether a full replacement is the more cost-effective long-term solution — we will not recommend a full replacement if a repair will hold. Our team also assists with insurance claims: we document all damage with photos and provide the detailed, itemized estimates your insurer requires to process the claim.

Yes. If your roof was damaged by a storm, fallen tree, or other covered event, Hamilton Exteriors will work alongside your insurance adjuster to ensure accurate damage documentation. We provide detailed, itemized repair estimates with photos that meet insurer requirements — including line-by-line breakdowns of materials, labor, tear-off, and disposal that adjusters need to approve the claim. Our project manager can be present during the adjuster's inspection to point out damage that may not be visible from the ground, such as compromised underlayment or displaced flashing around vents and chimneys. Most Bay Area homeowner policies cover sudden storm damage with a deductible of $1,000 to $2,500. We have helped homeowners across Alameda, Contra Costa, and San Mateo counties navigate dozens of roofing insurance claims — you focus on your family, and we handle the paperwork and repairs.