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

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

Deck Builder in Los Gatos

Serving Los Gatos & Santa Clara County
Licensed & Insured
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Hamilton Exteriors provides professional exterior services in Los Gatos, California. Los Gatos has approximately 12,000 housing units. The charming downtown area features historic homes from the early 1900s, while hillside neighborhoods offer larger custom homes with premium roofing requirements. Licensed under CSLB #1078806, we handle all Los Gatos building permits and inspections. Call (650) 977-3351 for an estimate.

Hillside neighborhoods in the Santa Cruz Mountains foothills, including areas near Lexington Reservoir, are in designated WUI fire zones. Class A fire-rated materials are required, and brush clearance is enforced. For Los Gatos decks specifically, our work across Downtown, Almond Grove and Blossom Hill comes down to composite vs cedar vs ipe selection, ledger flashing detail, and code-compliant guardrail and stair geometry — the kind of decisions an architect-led design-build team is set up to call.

Looking for a deck builder in Los Gatos who brings an architect's eye to your project? Hamilton Exteriors designs and builds custom decks for Los Gatos homes — from hillside redwood decks in the Santa Cruz Mountains foothills to modern composite patios in the flatlands near downtown. We handle every step: design, engineering, permitting, and construction.

Get Your Free Quote for your Los Gatos deck project.

Why Los Gatos Homeowners Choose Hamilton Exteriors

Most deck builders in Los Gatos are tradesmen who build what you describe. Hamilton Exteriors is different. Our founder, Alex Hamilton Li, is a licensed architect and general contractor (CSLB #1078806). He evaluates your deck as part of your whole property — considering drainage, views, sun exposure, and how the deck connects to your indoor spaces.

We have completed over 500 projects across the Bay Area since 2018, including dozens of decks in Los Gatos and neighboring communities like Monte Sereno, Saratoga, and Campbell.

Deck Construction Services in Los Gatos

We build decks in every material suitable for Los Gatos' climate and terrain:

  • Composite decking (Trex, TimberTech, Azek) — Low-maintenance, resists Santa Clara County's hot summers. $35 to $55 per square foot installed (Hamilton Exteriors 2024-2026 project data).
  • Redwood decking — Classic California look. Naturally rot-resistant. $30 to $50 per square foot installed.
  • Ipe and other hardwoods — Extremely durable, beautiful grain. $45 to $70 per square foot installed.
  • Cedar decking — Lightweight, aromatic, affordable. $25 to $40 per square foot installed.
  • Pergolas and shade structures — Attached or freestanding. $5,000 to $20,000 depending on size and material.

All pricing includes design, permits, structural engineering (where required), and cleanup. Structural repair or grading work is extra.

Los Gatos-Specific Considerations for Your Deck

Fire Risk and Building Codes

Parts of Los Gatos, especially the hillside neighborhoods above Highway 17 and near the Santa Cruz Mountains, fall within CAL FIRE's Very High Fire Hazard Severity Zones (FHSZ). If your property is in a WUI zone, your deck must comply with California Building Code Chapter 7A — including ignition-resistant materials and proper ember-resistant detailing. We know the requirements for every Los Gatos address and will pull the correct permit with the Los Gatos Building Department.

Climate and Material Selection

Los Gatos sits at the base of the Santa Cruz Mountains, creating a unique microclimate. Summer temperatures regularly hit 95°F in the downtown area, while foothill neighborhoods stay 5 to 10 degrees cooler. Composite decking performs well in both conditions — it does not warp or splinter like wood in the heat. For redwood decks, we specify kiln-dried heartwood and proper ventilation to prevent cupping in the dry season.

Seismic Considerations

Santa Clara County sits near the San Andreas, Calaveras, and Hayward faults. Los Gatos decks built before 2000 may lack the lateral bracing and connection details required by current seismic codes. Every new deck we build includes engineered connections between the deck ledger and house framing, plus properly sized footings that account for soil conditions. If you are replacing an existing deck, we will bring the structure up to current code.

Hillside Lots and Access

Many Los Gatos homes sit on sloped lots with limited access. We regularly build decks on hillside properties in the Blossom Hill, Summit, and Santa Cruz Avenue corridors. Our crews use material hoists and hand-carry materials where needed. We account for access challenges in our estimate so there are every cost itemized.

The Hamilton Exteriors Deck Process

  1. On-site consultation. Alex or a senior project manager visits your Los Gatos home, measures the space, discusses your goals, and checks for site constraints.
  2. Design and material selection. We create a deck design that fits your home's architecture and your budget. We help you choose the right material — composite, redwood, Ipe, or cedar — based on your priorities.
  3. Permitting. We handle the Los Gatos building permit application, including any required structural calculations. Permit fees in Los Gatos typically run $400 to $1,200 depending on deck size and complexity (Hamilton Exteriors 2024-2026 project data).
  4. Construction. Our crews build your deck to the approved plans. We protect your landscaping, clean up daily, and communicate progress.
  5. Final inspection. The city inspector signs off. We provide manufacturer warranties and maintenance guidance.

Get Your Free Quote for Your Los Gatos Deck

Ready to build the deck your Los Gatos home deserves? Call us at (650) 977-3351 or request a quote online. We serve all Los Gatos neighborhoods, from downtown to the hills.

Get Your Free Quote

Local Expertise

Deck Building in Los Gatos: What Homeowners Need to Know

Los Gatos sits at the base of the Santa Cruz Mountains where hillside estates command panoramic views of the South Bay valley. This terrain creates some of the most spectacular deck settings in Silicon Valley. Homes on upper hillside lots build multi-level decks with Ipe hardwood and high-end composite materials, creating outdoor living spaces that rival the quality of the home interior.

Los Gatos homeowners invest in premium materials and architectural deck design. Ipe (Brazilian walnut) hardwood is especially popular here for its 40+ year lifespan, rich coloring, and natural resistance to decay. TimberTech and Trex premium composite lines offer a maintenance-free alternative with realistic wood grain patterns. We design decks that integrate with the home architecture, not just bolt on.

Los Gatos building permits are issued through the Town of Los Gatos Community Development Department. Hillside properties require structural engineering, and many trigger design review for exterior modifications. The hillside development standards guide deck construction on steep terrain. Permit timelines average 3 to 6 weeks. Hamilton Exteriors navigates the design review and permitting process.

Deck costs in Los Gatos range from $25,000 to $60,000, reflecting the premium materials and architectural design standards typical for this market. Composite decking runs $40 to $55 per square foot installed. Ipe hardwood ranges from $55 to $75 per square foot. Multi-level hillside builds with engineered foundations, glass railings, and integrated lighting typically run $45,000 to $60,000.

Factory-certified by our manufacturer partners

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

Northern California home with financing options available through Hamilton Exteriors
Financing Options

Financing Options Available For Everyone

Most Northern California exterior projects range from $15,000 for a standard roof replacement to $600,000 for a custom ADU — and paying out of pocket isn't the only option. Hamilton Exteriors partners with multiple lending providers to 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. Whether you're replacing a roof, upgrading siding, or building an ADU, your project manager will walk you through every payment option during your free estimate so you can choose what fits your budget.

Ask about same-as-cash plans during your estimate.

Mid Market

Deck Building Costs in Los Gatos

$25,000–$60,000

Median home value in Los Gatos: $2,500,000

Composite decking: $35–$55/sq ft installed. Redwood: $30–$45/sq ft. Ipe hardwood: $50–$75/sq ft. Hillside decks with engineered footings at higher end. Costs depend on size, material, site access, and structural requirements. Free, itemized estimates provided.

Get Your Estimate

Rated 4.8 stars by Northern California homeowners across BBB, Trustpilot, Google, and Yelp

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What Deck Materials Are Available?

Composite Decking

Trex and TimberTech composite boards combine recycled wood fibers with polymer for exceptional durability. Fade-resistant, splinter-free, and backed by 25-year warranties. The most popular choice for Bay Area homeowners seeking low maintenance.

Hardwood Decking

Ipe (Brazilian walnut) and other tropical hardwoods offer 40+ year lifespans with rich, warm tones. Naturally resistant to rot, insects, and decay. The premium choice for homeowners seeking exceptional beauty and longevity.

Multi-Level Decks

Engineered multi-level deck systems step down hillside terrain, creating tiered outdoor rooms at different elevations. Steel post foundations, integrated stairs, and landings transform steep backyards into functional living spaces with views.

Deck Remodels

Complete deck renovation including composite resurfacing over sound framing, railing upgrades to cable or glass, structural reinforcement, and modern lighting integration. Transform an aging wood deck into a contemporary outdoor room.

Neighborhoods We Serve

Deck Building Across Los Gatos Neighborhoods

Los Gatos Hills

Los Gatos hillside estates offer premium deck settings with Santa Cruz Mountain views. Multi-level Ipe and composite decks on engineered foundations create resort-quality outdoor living spaces. These builds are among the most architecturally ambitious deck projects in the South Bay.

Belgatos

Belgatos properties on moderate hillside grades suit elevated deck platforms that capture foothill views. The neighborhood tree cover provides natural shade framing. Premium composite and hardwood materials match the refined aesthetic of this established neighborhood.

Shannon

Shannon neighborhood homes have generous yards where expansive deck designs accommodate outdoor kitchens, fire features, and multiple seating areas. The warm microclimate below the hills makes year-round outdoor entertaining a natural part of life here.

Kennedy

Kennedy area homes on hillside lots benefit from multi-level deck systems with stairs connecting the house to different yard elevations. These decks transform sloped backyards into functional, tiered entertainment spaces with mountain views.

Los Gatos Downtown

Downtown Los Gatos homes near North Santa Cruz Avenue have smaller lots where efficient deck design is essential. A well-planned 200 to 350 sq ft deck creates an intimate outdoor dining space that extends the home living area.

Blossom Hill

Blossom Hill family homes have backyards suited for 300 to 500 sq ft composite decks. Low-maintenance materials are popular for households with children. Shade pergolas integrate with the deck to manage summer heat while maintaining open-air feel.

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.

Our Latest Projects

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New Roof Installation in Hayward Roofing

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James Hardie Siding Installation in Pleasanton Siding

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GAF Roof Replacement in Oakland Roofing

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Architectural Roof Replacement in Berkeley Roofing

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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 deck cost in Los Gatos?

A typical Los Gatos deck costs $25,000 to $80,000 for a 400 to 800 square foot deck, depending on material, height above grade, and site access (Hamilton Exteriors 2024-2026 project data). Composite decks on flat lots at the lower end; redwood or Ipe decks on hillside properties at the higher end. Get a precise estimate with a free on-site consultation.

Do I need a permit for a deck in Los Gatos?

Yes. Los Gatos requires a building permit for any deck over 30 inches above grade or attached to the house. The Los Gatos Building Department handles permitting. Hamilton Exteriors pulls all permits on your behalf.

What is the best deck material for Los Gatos?

Composite decking (Trex, TimberTech) is the most popular choice for Los Gatos homes. It handles the hot summers without splintering, requires no staining or sealing, and resists the moisture from coastal fog that rolls in through the Santa Cruz Mountains gap. Redwood remains a strong choice for traditional homes.

How long does it take to build a deck in Los Gatos?

Most Los Gatos decks take 2 to 4 weeks from start to finish, depending on size and complexity. Permit approval adds 1 to 3 weeks. We schedule construction during the dry season (April through October) for best results.

Can you build a deck on a sloped Los Gatos lot?

Yes. We regularly build decks on hillside properties throughout Los Gatos. Steep lots require additional structural engineering, deeper footings, and sometimes retaining walls. We include all of that in our estimate.

Does a deck add value to a Los Gatos home?

Yes. A well-designed deck adds usable outdoor living space, which is highly valued in Los Gatos' competitive real estate market. Composite decks typically recoup 65 to 75 percent of their cost at resale, according to Remodeling Magazine's Cost vs. Value report.

What is included in your deck estimate?

Every estimate includes: design consultation, material selection, structural engineering (if needed), permit fees, demolition of existing structure (if applicable), new footings and framing, decking installation, railing, stairs, and cleanup. Grading, drainage work, and landscaping are separate.

Our Services in Los Gatos, California

Los Gatos has approximately 12,000 housing units. The charming downtown area features historic homes from the early 1900s, while hillside neighborhoods offer larger custom homes with premium roofing requirements.

Los Gatos requires building permits for all roof replacements. Properties in the Historic Preservation Zone have additional review requirements to ensure roofing materials are compatible with the home's architectural character.

Ready to start? (650) 977-3351

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21634 Redwood Rd Unit F, Castro Valley, CA 94546

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