Siding Installation Cost per Square in Seattle 2025

Installing new siding is a major investment for Seattle-area homeowners—but how much does it actually cost in 2025? Local factors like labor demand, weather, and building styles can significantly influence pricing compared to national trends.

2025 Pricing Overview

As of early 2025, the average cost to install siding in the Seattle area ranges from $650 to $950 per square (one “square” = 100 square feet). This estimate typically includes:

• Material costs (vinyl, fiber cement, or wood siding)
• Labor and equipment
• Old siding removal (if needed)
• Moisture barrier and underlayment installation

Keep in mind, this price range reflects the market at the time of writing—and due to inflation, material supply shifts, or labor shortages, costs may fluctuate in the future.

Why Seattle Pricing Is Unique

Several local conditions impact siding costs in this region:

• Climate Resilience: Seattle’s wet climate requires specific waterproofing techniques and high-quality materials that won’t warp or deteriorate under moisture. This adds both time and complexity to installation.
• Architectural Variety: From historic Craftsman homes to modern townhouses, Seattle’s housing diversity can affect labor time. More intricate facades and trim work often increase the cost per square.
• Seasonal Demand: Because exterior work is weather-sensitive, siding contractors are often booked solid from May to September. Off-season projects (late fall or early spring) may come with better availability or pricing incentives.

Looking Ahead

Prices listed here are based on 2025 estimates from regional contractors and suppliers. With the home improvement market still experiencing material volatility, these figures may shift over the coming months. Homeowners planning a siding project later in the year—or in 2026—should always get up-to-date quotes.

Seattle-Specific Tip

When comparing quotes, make sure contractors are familiar with Seattle’s building codes and moisture management requirements. A lower price may sometimes come at the cost of long-term durability if those local standards aren’t followed.

“Quality siding isn’t just an upgrade—it’s long-term protection against the elements. In Seattle’s climate, investing in proper installation today can save you thousands tomorrow.”