How Much Does a Deck Cost in 2026? PNW Pricing Guide for SEattle, Sammamish & the Eastside
In this guide, you’ll learn:
Typical deck pricing for Sammamish and Eastside homes in 2026
How materials, size, and site conditions affect cost
What composite vs. PVC decks cost in the PNW
How covered structures and multi‑level designs impact budgets
Where to see materials and craftsmanship at local community events
2026 deck cost guide for PNW homes - composite and PVC deck pricing breakdown.
If you’re planning a new deck in Sammamish, Redmond, Issaquah, Bellevue, or Mercer Island, one of the first questions you’ll ask is: How much will it cost? Deck pricing varies widely depending on materials, size, engineering, site conditions, and the complexity of your design.
At Endura Decking Co., we specialize in high‑end composite and PVC decks built for long‑term performance in the Pacific Northwest. This guide breaks down typical 2026 pricing so you can plan your project with clarity and confidence.
1. What Impacts Deck Pricing in the PNW?
Deck costs depend on several key factors:
Material choice (composite vs. PVC)
Deck size
Height and structural requirements
Site conditions (sloped lots, access, soil)
Covered structures
Stairs and railing systems
Lighting and premium upgrades
Homes in Seattle, Sammamish, Issaquah, and Snoqualmie often require additional engineering due to slopes, while Bellevue and Mercer Island projects may involve more complex architectural integration.
2. Composite Deck Pricing (2026)
These prices reflect deck‑only construction (framing, decking, basic stairs, and standard aluminum railing). Extras like roofs, lighting, and premium railings are listed separately.
Typical composite deck pricing in Sammamish / Eastside:
Small deck (150–250 sq ft): $28,000–$45,000
Medium deck (250–400 sq ft): $45,000–$75,000
Large deck (400–600 sq ft): $75,000–$120,000+
Why pricing is higher in our area (than lets say your friend in Eastern WA or another state):
Steep or uneven lots
Strict engineering requirements
Higher permit fees
Premium labor market
Homeowners choosing higher‑end composite lines
Composite is still the best value option by PVC will offer the best performance.
3. PVC Deck Pricing (Azek Vintage Collection)
These prices reflect deck‑only construction using Azek Vintage Collection, which is the premium PVC product we prefer and recommend.
Typical Azek Vintage PVC pricing:
Small deck: $35,000–$55,000
Medium deck: $55,000–$95,000
Large deck: $95,000–$150,000+
Why PVC costs more:
Fully synthetic (no wood fibers)
Zero moisture absorption
Superior fade resistance
Cooler underfoot
Longest lifespan
Premium aesthetics
For shaded, damp, or forested lots — common in Sammamish and Issaquah — Azek Vintage is the best long‑term investment.
4. Covered Deck Pricing (Roof Structures)
These prices are in addition to the deck cost.
Typical pricing:
Simple shed‑style roof: $35,000–$55,000
Gable roof: $45,000–$75,000
Premium cedar ceiling: + $10,000–$20,000
Skylights: + $2,500–$6,000 each
Louvered roof systems: $45,000–$75,000+
Covered structures are one of the biggest cost drivers — but also one of the biggest value‑add features.
Cost to put a cover and skylights on a deck.
5. Multi‑Level Deck Pricing
These prices include deck‑only construction for multi‑level layouts.
Typical pricing:
Two‑level deck: $90,000–$160,000+
Three‑level deck: $140,000–$250,000+
Multi‑level decks require more engineering, more footings, more framing (especially on sloped Seattle, Sammamish and Issaquah lots) AND waterproofing. However, when done right, multi-level decks with the ability to expand your outdoor living space are a great investment in the equity of your home.
6. Railing, Stairs & Lighting Costs (Add‑Ons)
These are add‑ons, not included in deck‑only pricing.
Railing Systems
Aluminum railing: $200–$325 per linear foot
Glass railing: $350–$550 per linear foot
Stairs
Standard stairs: $4,500–$8,500
Wide or multi‑flight stairs: $8,500–$20,000+
Lighting
Stair lights: $125–$225 per step
Under‑rail lighting: $2,500–$5,500
Recessed deck lights: $1,800–$4,000
Lighting dramatically improves safety and ambiance.
7. Community Events and Budget Planning
Endura Decking Co. participates in local home shows, supports youth sports, and stays active with Eastside chambers of commerce. These events give homeowners a chance to see materials, compare pricing options, and explore design ideas.
Follow our social channels for updates on upcoming events.
Read our reviews!
FAQ
What’s the average cost of a deck in Sammamish?
Most projects range from $28,000–$70,000 depending on size and materials.
Is PVC worth the extra cost?
For our PNW climate and the increased value of your home — yes.
Do covered decks cost more?
Yes — roof structures add $25,000–$60,000+ depending on design.
How much does railing cost?
Aluminum railing typically ranges from $150–$250 per linear foot.
Can I build a deck in winter?
Absolutely — composite and PVC can be installed year‑round.
Ready to Get a custom Deck quote?
Want a personalized estimate for your home? Book your free design consultation and we’ll walk you through materials, pricing, and design options.