Palo Alto homeowners trust Hamilton Exteriors for architect-led siding replacement and installation. We are a James Hardie Elite Preferred Contractor serving Palo Alto, Los Altos, Mountain View, and the broader Santa Clara County area. Our team, led by Alexander Hamilton Li, Architect and General Contractor (CSLB #1078806), brings a design-build approach to every siding project.
A full siding replacement on a typical Palo Alto home costs between $12,500 and $28,000, depending on material, home size, and architectural complexity (Hamilton Exteriors 2024-2026 project data). James Hardie fiber cement siding, our most recommended material, runs $2,100 to $2,325 per 100 square feet installed. This includes removal of existing siding, a new weather-resistant barrier, materials, labor, trim, and complete cleanup.
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Why Palo Alto Homeowners Choose Hamilton Exteriors for Siding
Palo Alto has unique building conditions that require a contractor who understands the local climate, codes, and housing stock. Here is what sets our siding work apart.
Architect-led approach. Unlike most siding contractors who focus solely on installation, Alex Hamilton Li is a licensed architect. He evaluates your home's exterior as a complete system, considering how siding interacts with windows, roofing, and moisture management. This means fewer callbacks and a longer-lasting installation.
James Hardie Elite Preferred certification. We are one of a select group of Bay Area contractors to hold this highest-level certification from James Hardie. It requires annual training, quality audits, and a proven track record of proper installation. Your siding carries an extended manufacturer warranty as a result.
Transparent, itemized pricing. Every estimate breaks out materials, labor, tear-off, weather barrier, trim, and permit fees as separate line items. You see exactly where your money goes before we start.
Factory-trained crews. Every installer on our team is manufacturer-certified, licensed, bonded, and insured. We background-check every crew member before they step onto your property.
Siding Materials We Install in Palo Alto
James Hardie Fiber Cement Siding
Fiber cement is the most popular siding choice for Palo Alto homes, and for good reason. James Hardie engineered its HZ5 formula specifically for coastal and high-humidity climates like the Bay Area. It resists moisture, fog, salt air, and the temperature swings that cause wood and vinyl to deteriorate.
- HardiePlank lap siding: $2,100 per square installed (Hamilton Exteriors 2024-2026 project data). The classic horizontal profile that suits Palo Alto's ranches, Eichlers, and Craftsman homes.
- HardieShingle siding: $2,325 per square installed. A textured shingle look ideal for Cape Cod and traditional styles.
- HardiePanel vertical siding: $2,175 per square installed. Clean, contemporary lines that complement mid-century modern and Eichler homes.
Fiber cement carries a Class A fire rating, the highest available. This matters for Palo Alto homes near the Foothills Fire Zone, where CAL FIRE designates Very High Fire Hazard Severity Zones (FHSZ). It also delivers an 86% return on investment at resale, according to Remodeling Magazine's 2024 Cost vs. Value Report.
Premium Vinyl Siding
For budget-conscious projects or rental properties, premium CertainTeed and Ply Gem vinyl siding offers a solid alternative. It runs $975 to $1,275 per square installed and lasts 20 to 40 years (Hamilton Exteriors 2024-2026 project data). Vinyl is low-maintenance and available in 60-plus colors. However, it melts in fire and is not suitable for homes in WUI zones.
Stucco Siding
Traditional three-coat stucco and EIFS are common on Palo Alto's Mediterranean and Spanish Colonial homes. Stucco runs approximately $1,950 per square installed and lasts 50 to 80 years with proper maintenance (Hamilton Exteriors 2024-2026 project data). It is non-combustible and performs well for noise reduction. However, stucco can trap moisture behind it if not properly flashed, which is why we always install a drainage plane behind new stucco applications.
Siding Costs for Palo Alto Homes
All prices below are per roofing square (100 square feet), fully installed, and reflect Hamilton Exteriors pricing as of Q2 2026. Pricing reflects Hamilton Exteriors 2024-2026 project data.
| Material | Installed Price per Square | Total Cost for 2,000 sq ft Home |
|---|---|---|
| Standard Vinyl | $975 | $19,500 |
| Insulated Vinyl | $1,275 | $25,500 |
| James Hardie HardiePlank | $2,100 | $42,000 |
| James Hardie HardieShingle | $2,325 | $46,500 |
| James Hardie HardiePanel | $2,175 | $43,500 |
| Three-Coat Stucco | $1,950 | $39,000 |
| Exterior Waterproofing | $825 | $16,500 |
What is included: Removal of existing siding, inspection and minor repair of underlying sheathing, installation of a weather-resistant barrier (WRB), new siding, trim, caulking, and complete cleanup. Permit fees are listed separately.
What may add cost: Significant dry rot repair (beyond minor patching), structural sheathing replacement, scaffolding for multi-story homes ($1,500 to $4,000), and complex architectural details like bay windows or multiple gables (Hamilton Exteriors 2024-2026 project data).
Palo Alto-Specific Considerations for Siding
Fire Risk and WUI Compliance
Parts of Palo Alto, particularly the foothills near the Santa Cruz Mountains, fall within CAL FIRE's Very High Fire Hazard Severity Zones. Homes in these areas must comply with California Chapter 7A building standards, which require Class A fire-rated exterior materials. James Hardie fiber cement siding meets this requirement. Vinyl siding does not and should not be installed on homes in WUI zones.
If your Palo Alto home is in a designated fire zone, we will verify the requirements during your on-site inspection and ensure your siding installation meets all local fire codes.
Climate Factors
Palo Alto experiences hot, dry summers with temperatures frequently exceeding 90 degrees Fahrenheit. This heat causes vinyl siding to expand and contract significantly, which can lead to warping and buckling over time. Fiber cement, by contrast, has a low coefficient of thermal expansion and maintains its shape in extreme temperatures.
The Santa Clara Valley also experiences moderate fog and marine layer influence, particularly in the spring and fall. This moisture, combined with heat, creates conditions that accelerate wood rot and paint failure on wood siding. Fiber cement's moisture resistance makes it the better choice for Palo Alto's climate.
Seismic Considerations
Palo Alto sits near the San Andreas Fault and is also influenced by the Calaveras and Hayward faults. While siding itself is not a structural element, the way it is attached to the framing matters in a seismic event. We use corrosion-resistant fasteners at the correct spacing and depth per manufacturer specifications and California building code. This ensures your siding stays attached during ground movement.
Permits and Building Codes
The City of Palo Alto requires a building permit for siding replacement projects. Permit fees typically range from $400 to $900 depending on project scope. We handle the entire permit process, including application, plan submission, and scheduling inspections. You can verify current requirements on the Palo Alto Building and Inspection Department website.
Palo Alto also requires compliance with Title 24 energy standards on certain exterior projects. If your siding replacement involves removing and reinstalling windows or adding insulation, additional energy code requirements may apply. We will identify these during your estimate.
Our Siding Installation Process in Palo Alto
Step 1: On-site inspection and measurement. We visit your home to inspect the existing siding, check for moisture damage or dry rot, and take precise measurements. This takes about 45 minutes.
Step 2: Itemized estimate. Within 48 hours, you receive a fully itemized estimate with per-square pricing for each material option. every line itemized, every cost itemized.
Step 3: Material selection and ordering. We help you choose the right James Hardie product, color, and finish. We order materials and schedule delivery.
Step 4: Permit application. We submit the permit application to the City of Palo Alto and handle all follow-up.
Step 5: Installation. Our crew removes existing siding, inspects and repairs sheathing, installs a weather-resistant barrier, and installs new siding. We work in sections so your home's exterior is never left exposed overnight.
Step 6: Final inspection and cleanup. The city inspects the completed work. We do a final walkthrough with you and clean the job site completely.
Get Your Free On-Site Estimate
Ready to discuss your Palo Alto siding project? Call us at (650) 977-3351 or fill out our contact form. We will visit your home within 3 days to measure, inspect, and provide a fully itemized estimate., just clear information about your options.
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Hamilton Exteriors is a James Hardie Elite Preferred Contractor and GAF Master Elite roofing contractor. Licensed, bonded, and insured. CSLB #1078806. Serving Palo Alto and the entire Santa Clara County area.
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