Bay Area Roof Replacement

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.

Cost depends on roof size, pitch, shingle tier, and how much decking needs replacing. Hamilton prices every roof by the square (100 square feet) so the number is transparent. Enter your address in our online quote tool for a real price in about a minute, with no on-site visit needed to start.

If the damage is isolated, like a few wind-lifted shingles or one flashing leak, a repair is fine. If your roof is past 20 years, leaking in several spots, or losing granules across large areas, replacement usually costs less over time than repeated fixes. We will tell you honestly which one your roof needs.

Most single-family Bay Area homes are completed in one to three days once materials are on site. Larger or steeper roofs and complex rooflines can take longer. We give you a firm schedule before work begins.

Every Hamilton replacement carries GAF's 50-year material warranty and our own 25-year labor warranty. Both are transferable to the next owner if you sell, which helps at resale.

Yes, when needed. We inspect the deck after tear-off and replace any rotted or delaminated sheathing before the new system goes on. Decking replacement is itemized clearly so there are no surprise charges.

Hamilton is a GAF Master Elite contractor and installs GAF exclusively, from Timberline HDZ architectural shingles to the Grand Sequoia and Presidential premium lines, plus GAF Ruberoid for flat sections. Installing a complete GAF system is what qualifies your roof for the 50-year warranty.