Roofing
Roof inspections, repairs, and replacements planned around condition, drainage, ventilation, material choice, and permits.
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Roof inspections, repairs, and replacements planned around condition, drainage, ventilation, material choice, and permits.
Exterior wall planning for cladding, weather barriers, flashing, trim, moisture damage, and required permits.
Window replacement based on opening measurements, frame condition, glass needs, flashing, efficiency, and installation method.
Property feasibility, design, permits, utilities, and construction planning for accessory dwelling units and garage conversions.
Planning for room extensions, second stories, structural changes, building systems, permits, and construction sequencing.
Site review, architecture, engineering, permits, and construction coordination for a ground-up home.
Projects Completed
Years Experience
Warranty Coverage
Average Rating
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 🌟 ✨ 💫🌟✨💫🌟✨💫☀️🙌🏾😀👍🏾
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!
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.
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.
Your proposal identifies included work, selected materials, permit allowances, payment timing, and exclusions before construction.
Hamilton Exteriors holds CSLB #1078806. We show manufacturer credentials only where they apply to the selected system.
We explain the product and workmanship warranty terms that apply to your selected scope before work begins.
One contact coordinates the schedule, field questions, inspections, and project closeout.
Hamilton Exteriors has completed projects across South San Francisco — from Westborough to Oyster Point. Here are some of the communities we serve.
From energy-efficient window installations to ground-up custom homes, Old Town residents choose Hamilton Exteriors for our design-build expertise. With South San Francisco's microclimate — Split: eastern bayside 62-78°F summers, western hills 55-68°F — material selection matters. We handle architecture, engineering, permits, and construction.
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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.
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.
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.
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.
Costs in South San Francisco reflect the mid market and local labor rates. Roof replacements typically run $10,000–$20,000 for a standard home, siding from $18,000–$34,000, and window replacements from $450–$800 per window depending on type and frame material. ADUs range from $180,000–$400,000. With median home values at $1,100,000 in South San Francisco, these improvements are strong investments. We provide free, itemized estimates for every project — no hidden fees.
South San Francisco is the "Industrial City" reinvented as a global biotech hub with historic downtown and rapid residential growth, with housing stock that includes 1920s-40s worker cottages and bungalows on Sign Hill and Old Town, 1950s-60s ranches in Westborough and Winston Manor, and modern biotech-era condos near Oyster Point. These homes face specific challenges: deferred maintenance on older worker cottages in Old Town with decades of lead paint layering, eastern bayside salt corrosion on flashing, and western hillside fog-driven moisture issues. With median home values at $1,100,000, exterior work is a significant investment that demands a contractor who understands South San Francisco's unique conditions. Hamilton Exteriors brings local knowledge of San Mateo County building codes, Title 24 Climate Zone 3 requirements, and climate-specific material selection to every project.
We serve all South San Francisco neighborhoods including Westborough, Sign Hill, Old Town, Winston Manor, Sunshine Gardens, and surrounding areas. With a population of 67,789, South San Francisco has a wide range of home styles — 1920s-40s worker cottages and bungalows on Sign Hill and Old Town, 1950s-60s ranches in Westborough and Winston Manor, and modern biotech-era condos near Oyster Point. Our crews are familiar with the architectural character of each neighborhood and carry materials suited to South San Francisco's climate: Split: eastern bayside 62-78°F summers, western hills 55-68°F. Wind corridor averages 12-20 mph. Annual rainfall approximately 20 inches. Fog moderate to heavy by elevation.
South San Francisco's climate — split microclimate — eastern bayside is warmer and drier, western hills catch heavy fog and Pacific wind. Industrial salt flats and bayside bring salt air to eastern homes. — creates specific challenges for homeowners. The most common issues we see are deferred maintenance on older worker cottages in Old Town with decades of lead paint layering, eastern bayside salt corrosion on flashing, and western hillside fog-driven moisture issues. For roofing, Sign Hill and Old Town have low-pitch roofs needing modified bitumen or TPO. Westborough tracts are standard 4:12 composition shingle. Wind rating matters on exposed hillside lots. Biotech-adjacent new construction uses standing seam. For siding, Old Town cottages often have multiple siding layers (original wood, asbestos overlay, aluminum) requiring full tear-off and potential abatement. Westborough has stucco or T1-11. Fiber cement is go-to replacement. Hamilton Exteriors selects materials proven to perform in South San Francisco's conditions and backs every installation with our 50-year warranty.
Yes. With South San Francisco's median home value at $1,100,000, exterior upgrades deliver strong ROI. A new roof recoups 60-65% of its cost at resale in the Bay Area, while fiber cement siding (James Hardie) recovers up to 86%. In competitive South San Francisco neighborhoods like Westborough and Sign Hill, curb appeal directly impacts days on market and final sale price. Hamilton Exteriors helps South San Francisco homeowners choose materials that maximize both protection and resale value.
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 →