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Hamilton Exteriors — roofing, siding, and exterior remodeling in Santa Clara, CA
4.8-star rated by 39 verified Northern California homeowners

CSLB #1078806 · Architect & General Contractor · Building Northern California homes since 2018

Roofing, Siding & Exterior Remodeling in Santa Clara

Serving Santa Clara & Santa Clara County
Licensed Bonded & Insured
$0 Down Financing Available
50-Year Warranty

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Factory-certified by our manufacturer partners

Owens Corning Preferred Contractor
CertainTeed ShingleMaster
GAF Master Elite Contractor
Tesla Powerwall Certified
James Hardie Elite Preferred

Santa Clara's Planning and Building Division requires permits for roof replacements. The city offers both online and in-person permit applications with typical processing times of 5-7 business days. We work across Santa Clara — including Old Quad, University Park and Pomeroy Green — with the architect-led design-build approach Hamilton Exteriors brings to every Bay Area project.

Looking for a reliable contractor in Santa Clara? Hamilton Exteriors provides full-service design-build construction for homeowners across Santa Clara. From roofing and siding to ADUs and custom homes, we handle every project with an architect's eye and a builder's precision.

Why Santa Clara Homeowners Choose Hamilton Exteriors

Santa Clara's housing stock ranges from Eichler mid-century homes in the central neighborhoods to newer custom builds near the foothills. Each comes with its own set of challenges. As an architect-led firm, we evaluate your home as a complete system, not just a list of repairs.

Our founder, Alex Hamilton Li, is both a licensed architect and a general contractor (CSLB #1078806). This dual credential means we design and build with a unified vision, catching coordination issues before they become costly change orders. Most Santa Clara contractors are tradesmen-only; we bring architectural thinking to every project.

Our Services in Santa Clara

Roofing

Santa Clara's hot summers push roofing materials to their limits. Temperatures regularly exceed 95 degrees, and the UV exposure accelerates granule loss on standard shingles. We install GAF, CertainTeed, and Owens Corning systems with proper attic ventilation to extend roof life.

Typical asphalt shingle replacement on a 2,000 sq ft Santa Clara home runs $19,500 to $24,000, including tear-off, synthetic underlayment, flashing, and permit fees. Tile roofs, common in older Santa Clara neighborhoods, cost $35,000 to $55,000 for the same size home. See our roofing services page for details.

Siding

Santa Clara's climate is relatively dry, but the summer sun can fade and crack wood siding over time. James Hardie fiber cement siding resists heat, moisture, and pests while maintaining a clean appearance. We are a James Hardie Elite Preferred Contractor, the highest certification level.

Windows

Older Santa Clara homes often have single-pane windows that leak conditioned air. Energy-efficient replacements reduce cooling costs during the summer months and improve home comfort. We install windows from major manufacturers with proper flashing and insulation.

ADU Construction

Santa Clara's ADU ordinance allows accessory dwelling units on most single-family lots. Whether you are building a detached backyard cottage or converting an existing garage, we handle design, permitting, and construction. Our ADU services include everything from foundation to finish.

Home Additions

Adding square footage to a Santa Clara home requires careful planning around setback requirements, height limits, and structural connections. We design additions that blend seamlessly with the existing architecture. Explore our home addition services.

Custom Homes

For homeowners starting from scratch, we offer full custom home construction. From site planning through final inspection, we manage every trade and coordinate with city inspectors. See our custom home portfolio.

Santa Clara Building Permits and Codes

Every construction project in Santa Clara requires a building permit from the Santa Clara Permitting Division. Permit fees vary by project scope:

  • Roof replacement: $400 to $800
  • Window replacement: $100 to $300 per window
  • ADU: $2,000 to $5,000
  • Home addition: $1,500 to $4,000

We pull all permits on your behalf and schedule the required inspections. The permit process protects you by ensuring code compliance, which matters at resale.

Fire Risk and Building in Santa Clara

While Santa Clara itself is not in a designated Wildland-Urban Interface zone, the nearby foothills in Saratoga, Los Gatos, and parts of Cupertino are classified as Very High Fire Hazard Severity Zones by CAL FIRE. Homes in those areas require Class A fire-rated roofing materials, ember-resistant vents, and defensible space compliance.

If your Santa Clara property borders open space or has significant vegetation, we recommend upgrading to Class A materials even if not required. The cost difference is modest compared to the peace of mind.

Seismic Considerations

Santa Clara County sits near three major fault systems: the San Andreas, Calaveras, and Hayward faults. Parts of Santa Clara are in mapped liquefaction zones, particularly areas with alluvial soils near the Guadalupe River. For major projects like additions or ADUs, we incorporate seismic bracing and foundation upgrades as needed.

Pricing Philosophy

We provide fully itemized estimates that break out every cost: materials, labor, permit fees, and disposal. every line itemized that hide markups. Our pricing is transparent so you can compare apples to apples.

What is included in our estimates: materials, labor, permit fees, dumpster rental, cleanup, and manufacturer warranties.

What is not included: structural repairs discovered during demolition (we quote these as a per-unit price upfront), upgrades beyond the agreed scope, and landscaping restoration.

Ready to Start Your Santa Clara Project?

Get your free quote today. Call (650) 977-3351 or request an estimate online. Hamilton Exteriors is licensed, bonded, and insured (CSLB #1078806). We look forward to helping you improve your Santa Clara home.

500+

Projects Completed

10+

Years Experience

50yr

Warranty Coverage

4.8

Average Rating

Rated 4.8 ★ from 39 Verified Northern California Homeowners

What Homeowners Say About Our Work

Real reviews from verified Northern California homeowners.

deborah maxey, Hamilton Exteriors customer

deborah maxey

in the last week

Great job and very professional the 1st photo is before and the other 2 is upon completion of work.

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.

Local Expertise

Exterior Projects in Santa Clara, California

The city of Santa Clara has approximately 43,000 housing units. Older neighborhoods near Santa Clara University and the downtown area feature homes from the 1930s-1960s, while newer developments in north Santa Clara date to the 1990s-2000s.

Santa Clara's Planning and Building Division requires permits for roof replacements. The city offers both online and in-person permit applications with typical processing times of 5-7 business days.

$1,500,000

Median home value

127,000

Population

35 minutes

From our office

Permit Authority

City of Santa Clara Planning and Building Division · (408) 615-2450

Local Tip

Santa Clara's Old Quad neighborhood near the university has some of the oldest homes in the South Bay — many with original clay tile roofs from the 1920s-1930s. Tile restoration rather than full replacement is often possible and preserves historic character.

What We Build

Custom Home & Exterior Services in Santa Clara

Custom Homes services by Hamilton Exteriors in Santa Clara

Custom Homes

Ground-up custom homes designed for Santa Clara's 1900s-30s Craftsman bungalows in the Old Quad near SCU neighborhoods. Architecture, engineering, permitting, and construction — all under one roof.

ADUs services by Hamilton Exteriors in Santa Clara

ADUs

Detached ADUs, garage conversions, and junior ADUs in Santa Clara. Full design-build with our 60-day permit guarantee.

Roofing services by Hamilton Exteriors in Santa Clara

Roofing

Roof replacement and repair in Santa Clara. Standard asphalt architecturals on most homes. Asphalt shingles, metal, tile, and cool roofing with manufacturer-backed warranties.

Siding services by Hamilton Exteriors in Santa Clara

Siding

Stucco dominant post-1970. James Hardie fiber cement, stucco, and waterproofing for Santa Clara homes with 30-year product warranties.

Windows services by Hamilton Exteriors in Santa Clara

Windows

Energy-efficient window replacement in Santa Clara — Title 24 Climate Zone 4 compliant. Noise from Highway 101, San Tomas Expressway, and Caltrain is significant.

Our Advantage

Why Choose
Hamilton Exteriors?

Transparent Pricing

Every estimate is itemized line by line — materials, labor, permits, cleanup. You see exactly where your money goes before we start.

Factory Trained Installers

Every crew member is manufacturer-certified and vetted — licensed, bonded, insured, and background-checked before they touch your home.

50-Year Warranty

50-year manufacturer warranty backed by our own workmanship guarantee for the full duration. If anything fails, we fix it — free.

Your Own Project Manager

One dedicated point of contact from first call to final walkthrough. You’ll always know who to reach.

Serving Santa Clara's Best Neighborhoods

Hamilton Exteriors has completed projects across Santa Clara — from Old Quad to Briarwood. Here are some of the communities we serve.

Old Quad

Old Quad is one of Santa Clara's most sought-after neighborhoods. Homes here — 1900s-30s Craftsman bungalows in the Old Quad near SCU — face specific challenges from Climate Zone 4. Summer highs 82-92°F. Valley floor with no coastal influence. Heat island effect from commercial/industrial zones along 101 corridor. No significant fire risk (flat. Hamilton Exteriors has completed dozens of projects in Old Quad, from full roof replacements to custom ADUs.

Washington Square

Homeowners in Washington Square trust Hamilton Exteriors for everything from siding upgrades to second story additions. Common issues we address here include older Old Quad homes near SCU have deferred maintenance on original wood siding. 1960s-70s tracts in Bowers with aging roofs and stucco cracking from thermal cycling. T1-11 deterioration on 1970s homes.. Our team knows Santa Clara County's Title 24 Climate Zone 4 requirements and takes pride in work that enhances the neighborhood's character.

Rivermark Village

From energy-efficient window installations to ground-up custom homes, Rivermark Village residents choose Hamilton Exteriors for our design-build expertise. With Santa Clara's microclimate — Relatively uniform climate — flat terrain — 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 (six counties from Alameda to Santa Clara), Greater Sacramento (Sacramento out to Roseville, Folsom, and Davis), and the Central Valley (Stockton to Modesto). Our crews are based in Castro Valley. We handle permits and know the building codes for each jurisdiction, which matters because requirements and fees vary significantly between cities.

How does billing and financing work?

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.

Are you licensed and insured?

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.

Do I need a permit for my exterior project?

Most exterior projects in Northern California 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.

How much does a general contractor cost in Santa Clara?

General contractor rates in Santa Clara range from $75 to $150 per hour for labor, depending on the trade (Hamilton Exteriors 2024-2026 project data). Most projects are bid on a fixed-price basis. A typical bathroom remodel runs $25,000 to $45,000, while a full kitchen remodel costs $50,000 to $100,000. We provide fixed-price quotes after an on-site inspection.

Do I need a permit for a roof replacement in Santa Clara?

Yes. Santa Clara requires a building permit for any roof replacement. Permit fees run $400 to $800 (Hamilton Exteriors 2024-2026 project data). Your contractor should pull the permit and schedule the final inspection. If a contractor suggests skipping the permit, find a different contractor.

How long does a home addition take in Santa Clara?

A single-story addition of 400 to 800 square feet typically takes 4 to 6 months from permit issuance to completion. Design and permitting add 2 to 4 months before construction starts. Timing depends on city review times, which can vary.

What is the best roofing material for Santa Clara's climate?

Premium architectural asphalt shingles are the most popular choice for Santa Clara homes. They handle the heat well and last 25 to 50 years. For homes near open space, metal roofing offers superior fire resistance and reflects up to 70 percent of solar energy (Oak Ridge National Laboratory).

Does Hamilton Exteriors serve all of Santa Clara?

Yes. We serve every neighborhood in Santa Clara, from the historic downtown area to the newer developments near the San Tomas Expressway. We also serve all of Santa Clara County.

How do I get started with Hamilton Exteriors?

Call us at (650) 977-3351 or fill out our contact form. We will schedule an on-site inspection and provide a detailed, itemized estimate within a few business days.

Ready to start? (650) 977-3351

Call now — we pick up in minutes. Or fill out the form above and we'll call you.

21634 Redwood Rd Unit F, Castro Valley, CA 94546

Serving Oakland, Berkeley, Fremont, San Jose, Palo Alto, Walnut Creek, San Rafael, Napa, Redwood City & more across Alameda, Contra Costa, Marin, Napa, San Mateo & Santa Clara counties. All 47 cities →

Hamilton Exteriors — Serving Santa Clara, CA