Roofing
Roof inspections, repairs, and replacements planned around condition, drainage, ventilation, material choice, and permits.
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Home Remodeling Contractor in St. Helena
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What We Build 
Available Services in St. Helena
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.
Additions
Planning for room extensions, second stories, structural changes, building systems, permits, and construction sequencing.
Custom Homes
Site review, architecture, engineering, permits, and construction coordination for a ground-up home.
Decks
Site, structural, material, railing, access, and permit planning for new decks and major deck renovations.
500+
Projects Completed
10+
Years Experience
50yr
Warranty Coverage
4.8
Average Rating
Google rating 4.6 ★ from 47 public reviews
What Homeowners Say About Our Work
Public reviews from Northern California homeowners.
Chandra Williams
a week ago
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.
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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.
Local Expertise
Exterior Projects in St. Helena, California
St. Helena is a small, affluent Napa Valley city with approximately 2,500 housing units. Many homes here feature premium materials and architectural details that reflect the community's high-end character.
St. Helena's Community Development Department reviews all building permit applications. The city has strict design guidelines in its historic downtown area that may influence roofing material and color selection.
$1,500,000
Median home value
6,100
Population
75 minutes
From our office
Permit Authority
City of St. Helena Community Development Department · (707) 968-2740
Local Tip
St. Helena's historic downtown district has design review requirements that can affect roofing material and color choices. Natural-looking architectural shingles in earth tones are consistently approved and complement the town's wine country aesthetic.
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.
Serving St. Helena's Best Neighborhoods
Hamilton Exteriors has completed projects across St. Helena — from Downtown St. Helena to Sulphur Springs. Here are some of the communities we serve.
Meadowood
From energy-efficient window installations to ground-up custom homes, Meadowood residents choose Hamilton Exteriors for our design-build expertise. With St. Helena's microclimate — Narrow valley floor creates extreme temperature amplification — Mayacamas and Vaca ranges trap heat, producing 105-110°F summer peaks — material selection matters. We handle architecture, engineering, permits, and construction.
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.
How much does a general contractor cost in St. Helena?
General contractor rates in St. Helena typically range from $150 to $250 per hour for labor, or 10 to 20 percent of total project cost for project management (Hamilton Exteriors 2024-2026 project data). Most projects are bid on a fixed-price basis. Hamilton Exteriors provides fully itemized fixed-price estimates with no hourly billing surprises.
Do I need a permit for a roof replacement in St. Helena?
Yes. Napa County requires a building permit for any roof replacement. Permit fees are $400 to $800 (Hamilton Exteriors 2024-2026 project data). The permit triggers a final inspection that confirms code compliance, which protects you at resale. We pull all permits as part of the project.
What roofing material is best for St. Helena's fire risk?
Class A fire-rated materials are required in St. Helena's WUI zones. Asphalt shingles (GAF Timberline HD
How long does a custom home take to build in St. Helena?
A custom home in St. Helena typically takes 12 to 24 months from design through final inspection. Permitting alone can take 3 to 6 months due to Napa County's review process. Site work and foundation add additional time on hillside lots.
Does Hamilton Exteriors serve all of Napa County?
Yes. We serve St. Helena, Napa, Yountville, Calistoga, and all unincorporated areas of Napa County. See our Napa County service area page for the full list.
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 →