Homeowners in Portland and Seattle often ask how much siding installation costs — especially when considering James Hardie® fiber cement siding, one of the most popular materials in the Pacific Northwest.
In 2026, siding costs are influenced by regional labor rates, material availability, home size, and the unique challenges of the Pacific Northwest climate. This article breaks down average James Hardie siding installation costs in Portland and Seattle, explains what affects pricing, and helps homeowners plan realistically.
Quick Answer:
In 2026, James Hardie siding installation in the Portland and Seattle metro areas typically costs $12 to $20 per square foot, or $18,000 to $35,000+ for an average-sized home, depending on home size, siding style, labor complexity, and preparation work.
In 2026, James Hardie siding installation in the Portland and Seattle metro areas typically costs $12 to $20 per square foot, or $18,000 to $35,000+ for an average-sized home, depending on home size, siding style, labor complexity, and preparation work.
Why Roofing Material Choice Matters in the Pacific Northwest
Siding installation in the Pacific Northwest costs more than in many regions due to:
Installing siding correctly in Portland and Seattle requires additional steps to prevent moisture intrusion, which increases labor time but protects the home long-term.
- Higher skilled labor rates
- Strict local building codes
- Moisture-management requirements
- Rainy weather delays
- Proper flashing, waterproofing, and ventilation needs
Installing siding correctly in Portland and Seattle requires additional steps to prevent moisture intrusion, which increases labor time but protects the home long-term.
Average James Hardie Siding Costs in 2026
James Hardie Siding Cost Per Square Foot
In 2026, homeowners can expect:
In 2026, homeowners can expect:
- Materials: $6 – $10 per sq. ft.
- Labor & Installation: $6 – $10 per sq. ft.
- Total Installed Cost: $12 – $20 per sq. ft.
Typical Total Project Costs
What Factors Affect James Hardie Siding Costs?
Several variables can raise or lower your final siding cost:
Homes with moisture damage often require additional prep work, which is common in older Portland and Seattle houses.
- Siding style (lap, panel, shingle, or mixed styles)
- Home design complexity (multiple stories, gables, dormers)
- Removal of old siding
- Sheathing or rot repair
- Window and door flashing upgrades
- Permit and inspection requirements
Homes with moisture damage often require additional prep work, which is common in older Portland and Seattle houses.
Is James Hardie Siding Worth the Cost in 2026?
While James Hardie siding costs more upfront than vinyl, it delivers long-term value in the Pacific Northwest:
For many homeowners, James Hardie siding reduces long-term repair and repainting costs, making it a smart investment.
- Lasts 30–50 years or more
- Requires less maintenance
- Resists rot, mold, pests, and fire
- Improves curb appeal and resale value
- Performs exceptionally well in wet climates
For many homeowners, James Hardie siding reduces long-term repair and repainting costs, making it a smart investment.
Frequently Asked Questions
How much does James Hardie siding cost in Portland in 2026?
James Hardie siding in Portland typically costs between $12 and $20 per square foot installed in 2026.
James Hardie siding in Portland typically costs between $12 and $20 per square foot installed in 2026.
How much does James Hardie siding cost in Seattle in 2026?
Seattle-area homeowners can expect similar pricing, generally $13 to $21 per square foot due to slightly higher labor rates.
Seattle-area homeowners can expect similar pricing, generally $13 to $21 per square foot due to slightly higher labor rates.
Is James Hardie siding more expensive than vinyl?
Yes. James Hardie siding costs more upfront than vinyl, but it lasts longer and performs better in wet climates.
Yes. James Hardie siding costs more upfront than vinyl, but it lasts longer and performs better in wet climates.
What increases siding installation costs the most?
Labor complexity, moisture damage repairs, multi-story homes, and detailed trim work have the biggest impact on price.
Labor complexity, moisture damage repairs, multi-story homes, and detailed trim work have the biggest impact on price.
Can siding installation be financed?
Yes. Many siding contractors offer financing options to spread costs over time.
Yes. Many siding contractors offer financing options to spread costs over time.
Planning a Siding Upgrade in 2026?
Get an accurate estimate for James Hardie® siding installation designed for Portland and Seattle weather.