Roofing
Roof inspections, repairs, and replacements planned around condition, drainage, ventilation, material choice, and permits.
Now Booking Fall 2026: Schedule Your Consultation
Home Improvement Services in Marin County
Choose your project type, review county planning guidance, and find the Hamilton Exteriors service page for your city.
500+ projects
Since 2018
Up to 50-Year
Select System Warranties
Get Your Free Quote in Marin County
We'll call you within 3–5 minutes to schedule your inspection.
Your information is private and secure
Factory-certified by our manufacturer partners
6
Project services
4
Local service pages
#1078806
California license
Choose Your Project
Services in Marin County
Start with the service that matches your project. Each page explains the relevant scope, planning steps, and local service locations.
Siding
Exterior wall planning for cladding, weather barriers, flashing, trim, moisture damage, and required permits.
Windows
Window replacement based on opening measurements, frame condition, glass needs, flashing, efficiency, and installation method.
ADUs
Property feasibility, design, permits, utilities, and construction planning for accessory dwelling units and garage conversions.
Custom Homes
Site review, architecture, engineering, permits, and construction coordination for a ground-up home.
Additions
Planning for room extensions, second stories, structural changes, building systems, permits, and construction sequencing.
County Planning Guide
Building in Marin County: What Homeowners Need to Know
Review the building conditions that can affect scope, materials, permits, and scheduling across the county.
01
Marin County presents unique construction challenges that require a contractor who understands the local landscape. Much of the county falls within Wildland-Urban Interface (WUI) fire zones, particularly in Mill Valley, the hills above San Rafael, and western Novato. Homes in these zones must comply with California’s Chapter 7A fire-resistant building standards, which mandate Class A fire-rated roofing, ember-resistant vents, and non-combustible exterior materials within specified setback distances.
02
The Bay Conservation and Development Commission (BCDC) regulates construction within 100 feet of San Francisco Bay shoreline areas throughout eastern Marin. Projects in Larkspur, southern Mill Valley, and portions of San Rafael near the bay may require a BCDC permit in addition to standard city building permits. Permit processing times in Marin cities typically run 4–8 weeks for roofing and siding, though projects requiring design review in historic districts — particularly downtown San Rafael and Mill Valley’s Throckmorton corridor — can take longer.
03
Marin’s coastal fog and high moisture levels make material selection critical. We recommend James Hardie HZ5 fiber cement siding for its resistance to moisture-driven rot and the county’s salt air exposure. For roofing, GAF Timberline HDZ shingles with StainGuard Plus provide the algae resistance needed in Marin’s shaded, fog-belt neighborhoods like Homestead Valley and Baltimore Canyon. Median home values in Marin exceed $1.4 million, and homeowners here expect premium craftsmanship that matches the character of their hillside and bayside homes.
04
Hamilton Exteriors has completed roofing, siding, and exterior projects throughout Marin County — from fire-zone roof replacements in the hills above Mill Valley to full siding restorations on Novato ranch homes. Our crews are familiar with the county’s permit requirements, inspection expectations, and the access challenges that come with Marin’s narrow hillside roads.
Find Your City
Service locations in Marin County
Choose a city for focused services, local planning details, and direct project links.
Larkspur, CA
View available Hamilton Exteriors services and local project guidance for Larkspur.
Explore Larkspur services →
Mill Valley, CA
View available Hamilton Exteriors services and local project guidance for Mill Valley.
Explore Mill Valley services →
Novato, CA
View available Hamilton Exteriors services and local project guidance for Novato.
Explore Novato services →
San Rafael, CA
View available Hamilton Exteriors services and local project guidance for San Rafael.
Explore San Rafael services → Plan Your Project
Start your Marin County project with a clear scope
Tell us what you are planning in Marin County. We will review the property, project type, and next steps before construction begins.
Google rating 4.6 ★ from 47 public reviews
What Homeowners Say About Our Work
Public reviews from Northern California homeowners.
Chandra Williams
in the last week
Roof City did an excellent job on my roof. They were professional, fast, efficient, and clean. They over- delivered on their promise to do a five- star job in two days, which included all materials and permits needed. They deserve a 10 star rating 🌟 ✨ 💫🌟✨💫🌟✨💫☀️🙌🏾😀👍🏾
E
Eric W.
via Yelp
Hamilton Exteriors did an amazing job on my roof. The team was professional, and the quality of work was top-notch. Highly recommend!
R
Robert H.
via Angi
From the very first consultation, we knew we'd made the right choice. The team was knowledgeable and genuinely listened to our concerns about energy efficiency and design. We've already noticed a drop in our energy bills.
L
Laura G.
via Nextdoor
Hamilton Exteriors repaired extensive dry rot damage on our home's exterior. Their attention to detail and commitment to quality were evident throughout the project. Our home looks better than ever.
Project Management How Hamilton Exteriors
How Hamilton Exteriors
Manages the Work
Itemized Scope
Your proposal identifies included work, selected materials, permit allowances, payment timing, and exclusions before construction.
Relevant Credentials
Hamilton Exteriors holds CSLB #1078806. We show manufacturer credentials only where they apply to the selected system.
Warranty Review
We explain the product and workmanship warranty terms that apply to your selected scope before work begins.
One Project Contact
One contact coordinates the schedule, field questions, inspections, and project closeout.
Frequently Asked Questions
Didn't find the answer to your question? Call Now (650) 977-3351
What areas do you serve?
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.
How does billing and financing work?
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.
Are you licensed and insured?
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.
Do I need a permit for my exterior project?
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.
21634 Redwood Rd Unit F, Castro Valley, CA 94546
Serving 88 cities across the Bay Area, Greater Sacramento, and Central Valley. Explore all service areas →