Hamilton Exteriors is your Mountain View home contractor for roofing, siding, windows, ADUs, home additions, and custom builds. We are an architect-led design-build firm serving Mountain View homeowners since 2018. Our founder, Alex Hamilton Li, is a licensed architect and general contractor (CSLB #1078806) who brings a designer's eye to every project.
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Why Mountain View Homeowners Choose an Architect-Led Contractor
Most general contractors in Mountain View focus on getting the job done. We focus on getting it done right — with an architect's attention to proportion, material selection, and how your home fits together as a system. Alex Hamilton Li oversees every project from the initial inspection through final walkthrough. Every estimate is fully itemized line by line, so you see exactly where your money goes.
Mountain View homes present unique challenges that a one-size-fits-all contractor might miss. The city's housing stock ranges from Eichler mid-century moderns in the Slater and Gemello neighborhoods to custom hillside homes near the Stevens Creek Reservoir. Each requires a different approach to materials, structural reinforcement, and energy performance.
Our Services in Mountain View
We provide a full range of exterior and interior home services for Mountain View homeowners. Every service includes a complimentary on-site inspection and a written, itemized estimate.
Roofing
Mountain View's hot summers — temperatures regularly exceed 95 degrees Fahrenheit in July and August — accelerate wear on roofing materials. Asphalt shingles, metal, tile, and flat roofing all respond differently to this heat. We install GAF Timberline HDZ shingles, standing seam metal, clay and concrete tile, and TPO/PVC flat roofing. Every roof replacement includes tear-off, synthetic underlayment, new flashing, ridge vent, and permit fees. Pricing for a typical 2,000-square-foot asphalt shingle roof in Mountain View runs $20,500 to $25,500 in 2026, per our roof replacement cost guide. Permits from the Mountain View Building Division run $400 to $900.
Learn more about our roofing services.
Siding
Mountain View's climate — hot, dry summers and mild, wet winters — is ideal for James Hardie fiber cement siding. It resists the warping and cracking that wood siding suffers during summer heat waves. We are a James Hardie Elite Preferred Contractor, the highest tier of certification. We install HardiePlank lap siding, HardiePanel vertical panels, and HardieTrim boards. Pricing ranges from $12,000 to $30,000 depending on home size and complexity (Hamilton Exteriors 2024-2026 project data).
Learn more about our siding services.
Windows
Energy-efficient windows reduce cooling costs during Mountain View's hot summers and heating costs during the cooler months. We install Milgard, Andersen, and Pella windows in double-pane, triple-pane, and impact-resistant configurations. Window replacement runs $800 to $1,500 per window installed, including framing, flashing, and trim (Hamilton Exteriors 2024-2026 project data).
Learn more about our window replacement services.
ADU Construction
Mountain View's zoning allows accessory dwelling units on most single-family lots. We design and build detached ADUs, attached ADUs, and garage conversions. Our architect-led process ensures your ADU meets Mountain View's setback requirements, parking rules, and building codes. Pricing for a typical one-bedroom ADU in Mountain View runs $200,000 to $350,000. See our ADU cost guide for detailed breakdowns.
Learn more about our ADU construction services.
Home Additions
Whether you need a second story, a bedroom bump-out, or a family room expansion, we handle the full design-build process. We work with Mountain View's planning department to navigate setback requirements, height limits, and lot coverage restrictions. Pricing for a 400-square-foot first-floor addition runs $150,000 to $250,000. See our second-story addition cost guide.
Learn more about our home addition services.
Custom Homes
We design and build custom homes from the ground up. Our architect-led process covers site planning, structural engineering, energy modeling, and interior design. We handle all permitting with the Mountain View Building Division and coordinate with the Santa Clara Valley Water District for stormwater management requirements.
Decks and Outdoor Living
Mountain View's mild climate makes outdoor living spaces usable year-round. We build composite and wood decks, covered patios, and outdoor kitchens. Pricing for a 300-square-foot composite deck runs $15,000 to $30,000 (Hamilton Exteriors 2024-2026 project data).
Mountain View Building Permits and Codes
Every home project in Mountain View requires a building permit from the Mountain View Building Division. Permit fees vary by project scope:
- Roof replacement: $400 to $900
- Window replacement: $100 to $300 per window
- ADU: $2,000 to $5,000
- Home addition: $3,000 to $8,000
- Custom home: $10,000 to $25,000
We pull all permits on your behalf and schedule all required inspections. Our team knows Mountain View's inspection process and works with city inspectors to keep your project on schedule.
Mountain View Climate and Fire Risk Considerations
Mountain View sits in Santa Clara County, where summer temperatures regularly exceed 95 degrees Fahrenheit in July and August, according to NOAA climate data. This heat affects material selection for roofing, siding, and windows. Dark roofing materials absorb more heat and increase cooling costs. Light-colored or "cool roof" materials reflect more solar energy and reduce attic temperatures by 10 to 25 degrees Fahrenheit.
While Mountain View itself is not in a designated Wildland-Urban Interface zone, the nearby Santa Cruz Mountains foothills — including parts of Los Gatos, Saratoga, and Cupertino — are classified as Very High Fire Hazard Severity Zones by CAL FIRE. Homes in these areas require Class A fire-rated roofing materials and Chapter 7A compliant construction. If your Mountain View property is near the Stevens Creek Reservoir or the foothills, we can assess your fire risk and recommend appropriate materials.
Seismic Considerations for Mountain View Homes
Mountain View lies near the San Andreas Fault, approximately 10 miles to the west, and the Hayward Fault, approximately 15 miles to the east. The U.S. Geological Survey estimates a 72 percent probability of a magnitude 6.7 or greater earthquake in the Bay Area by 2043. This seismic risk affects how we design and build:
- Roofs must be securely fastened to wall plates with approved connectors
- Siding attachment must resist lateral forces
- ADUs and additions require engineered foundations and shear walls
- Chimneys and masonry veneers need seismic reinforcement
Every project we design includes a structural review by a licensed engineer. We do not cut corners on seismic safety.
How We Price Projects in Mountain View
We price every project as a fixed-price contract with a fully itemized estimate. You see the cost of materials, labor, permits, and cleanup as separate line items. There are no lump-sum bids that hide markups.
Our pricing reflects Mountain View's labor market, permit fees, and material costs. We do not charge extra for travel or mobilization within Santa Clara County. We include dumpster rental, daily site cleanup, and final debris removal in every estimate.
Ready to Start Your Mountain View Home Project?
Get Your Free Quote
Call (650) 977-3351 or fill out our online form. We will schedule a complimentary on-site inspection and provide a written, itemized estimate. Hamilton Exteriors is your Mountain View home contractor — architect-led, licensed, and built for the Bay Area.
