How Much Does Deck Installation Cost in Spokane, WA in 2026?

Last updated: 2026-09-14 · Spokane, WA · 1429 words · 8 min read

Average Cost of Deck Installation in Spokane

In Spokane, Washington, the typical price for a new deck falls between $24.50 and $49.00 per square foot. Those figures are the result of applying Spokane’s local cost factor of 0.98 to the national range of $25‑$50. A 300‑square‑foot deck, which is a common size for families that want space for a grill, table and a few chairs, will therefore cost roughly $7,350 to $14,700. The exact amount depends on the material you choose, the deck’s height, and any added features such as railings, stairs or built‑in seating.

Deck Installation Cost by Material

The decking material you select has the greatest impact on the overall price. Below are the Spokane‑adjusted low and high estimates for the most popular options.

• Pressure‑treated wood: $24.50 – $34.30 per sq ft. This is the most budget‑friendly choice and works well for ground‑level decks.
• Cedar: $29.40 – $39.20 per sq ft. Cedar offers a natural, aromatic look and is naturally resistant to rot, but it costs a few dollars more than pressure‑treated lumber.
• Composite (low‑end): $34.30 – $44.10 per sq ft. Composite boards require little maintenance and resist fading, making them a popular mid‑range option.
• Composite (premium): $39.20 – $49.00 per sq ft. Premium brands provide enhanced durability, deeper color options, and a smoother surface.
• PVC: $39.20 – $53.90 per sq ft. PVC decking is fully waterproof and ideal for areas with heavy moisture, but it sits at the top of the price spectrum.

Cost by Project Size in Spokane

Because most contractors charge by the square foot, the total cost scales directly with deck dimensions. Applying the 0.98 factor to the national project‑size ranges gives the following Spokane estimates:

• 10 × 10 ft (100 sq ft): $2,450 – $4,900 – suitable for a small grill and a couple of chairs.
• 12 × 16 ft (192 sq ft): $4,704 – $9,408 – provides enough room for a dining table and additional seating.
• 16 × 20 ft (320 sq ft): $7,840 – $15,680 – a full‑size outdoor living area that can accommodate a lounge set, outdoor kitchen, or built‑in benches.

These totals include materials, labor, framing, footings and standard railings. Any custom features will add to the price.

What Affects the Price in Spokane?

Several local factors can push the cost up or down:

• Deck height: Ground‑level decks need fewer footings and usually no railings, while elevated decks require deeper footings, stronger framing and code‑required railings.
• Soil conditions: Spokane’s soil varies from rocky in the foothills to heavy clay in low‑lying neighborhoods. Difficult soil slows footing installation and raises labor costs.
• Material selection: Composite and PVC decks cost 30‑60 % more than pressure‑treated wood, but they eliminate the need for periodic staining or sealing.
• Design features: Adding stairs, pergolas, built‑in seating, lighting or custom railings can add $1,000‑$5,000 to the final bill, depending on complexity.

How to Save Money on Deck Installation in Spokane

• Keep the deck at ground level to avoid extra footings and railing requirements.
• Choose pressure‑treated wood and apply the stain yourself; a DIY stain job can save $300‑$600.
• Obtain at least three written quotes using the same material specifications to ensure a fair price comparison.
• Schedule the build for spring or early fall when crews have more availability and material delivery times are shorter.
• Consider a modular or pre‑cut deck kit; these kits reduce waste and can lower labor time by up to 15 %.

DIY vs. Hiring a Professional

A flat, ground‑level deck built with pressure‑treated lumber can be a realistic DIY project for a homeowner with basic carpentry skills. However, Spokane’s building code imposes strict requirements on footing depth, railing strength and load‑bearing capacity for decks over 30 inches high. For elevated decks, stairs or any custom features, hiring a licensed contractor is strongly recommended to avoid costly code violations and ensure long‑term safety.

What to Expect: The Deck Installation Process

1. Permit application and utility locates – Submit plans to the Spokane County Building Department and request utility markings.
2. Layout and footing installation – Stakes mark the deck perimeter; concrete footings are poured to the required depth based on soil type.
3. Framing and joists – Pressure‑treated or steel joists are secured to the footings, creating a sturdy skeleton.
4. Decking boards installed – Boards are fastened to the joists, with spacing left for drainage.
5. Railings, stairs, and finish work – Code‑compliant railings are added, stairs are built, and the deck is stained or sealed.
6. Final inspection and stain or seal – The city inspector verifies compliance, then the homeowner or contractor applies the final protective coating.

How Long Does It Take in Spokane?

A typical 12 × 16 ft deck can be completed in 1 to 2 weeks once permits are approved and materials are on site. Permit approval in Spokane usually takes 5‑10 business days, and material lead times (especially for composite or PVC) can add another 2‑6 weeks. Therefore, most homeowners should budget a total schedule of 4‑8 weeks from start to finish.

Hidden Costs to Watch For

• Permit and inspection fees – typically $150‑$300 depending on deck size and height.
• Utility locate charges – $50‑$100 per locate, required before footings are poured.
• Demolition of an existing deck – $1,000‑$3,000 for removal and disposal.
• Stain, sealer or waterproofing – $0.75‑$1.50 per sq ft for high‑quality products.
• Additional soil preparation – rock removal or soil stabilization can add $2‑$5 per sq ft.

Paying for Deck Installation

Many Spokane deck contractors offer financing options ranging from 12 to 36 months with interest rates between 5 % and 12 %. Because a deck is a moderate‑size home improvement, it’s wise to compare contractor financing with a home‑equity line of credit (HELOC) or a personal loan to determine the lowest overall cost of borrowing.

Insurance Considerations

Standard homeowners insurance in Spokane includes decks under the “dwelling” and “other structures” coverage limits, protecting against fire, wind and hail. However, routine wear, rot or damage from neglect is not covered. Maintaining the deck—re‑staining wood decks every 2‑3 years and cleaning composite surfaces—helps keep the structure in good standing and ensures claims are not denied for lack of upkeep.

Does Deck Installation Increase Home Value?

In Spokane’s market, a well‑built wood deck typically recoups 65‑75 % of its cost at resale, while premium composite or PVC decks can recover 80 % or more. Buyers in the Inland Northwest value outdoor living space, especially during the warm summer months, making a deck a strong selling point that can shorten time on market.

How to Choose a Contractor in Spokane

Start by checking the Washington State Department of Labor & Industries for a contractor’s license and any past complaints. Request at least three detailed estimates that break down material, labor, footings, railings and finish work. Verify that the contractor carries general liability insurance and workers’ compensation. Finally, ask for references from recent Spokane projects and visit one completed deck to assess workmanship.

Frequently Asked Questions

How much does it cost to build a deck in Spokane?

Deck construction in Spokane runs about $24.50 to $49.00 per square foot installed. Pressure‑treated wood is the most affordable option, while composite and PVC decking sit at the higher end of the range. For a typical 300‑square‑foot deck, homeowners should expect a total cost between $7,350 and $14,700.

Is a deck a good investment?

Yes. Wood decks generally recover 65‑75 % of their installation cost at resale, and composite decks often recover an even higher percentage. In Spokane’s market, outdoor living space is a highly sought‑after feature, especially during the warmer months, making a deck a solid investment.

How long does it take to build a deck?

A standard deck in Spokane takes 1 to 2 weeks for the actual construction phase. Permit approval and material delivery can add another 2‑6 weeks, so most projects are completed within a 4‑8‑week window.

Wood or composite decking — which is better?

Pressure‑treated wood offers the lowest upfront cost but requires staining or sealing every 2‑3 years. Composite and PVC decking cost 30‑60 % more but provide virtually maintenance‑free performance, resisting fading, rot and splintering—an advantage in Spokane’s wet winters and occasional wildfire smoke.

Do I need a permit for a deck in Spokane?

Most Spokane jurisdictions require a building permit for any attached deck, especially those that exceed 30 inches in height. It’s essential to contact the Spokane County Building Department before ordering materials to confirm the permit requirements and avoid costly re‑work.

What size deck should I build?

A 10 × 10 ft deck (100 sq ft) works well for a small grill and a couple of chairs. A 12 × 16 ft deck (192 sq ft) accommodates a full dining set, while a 16 × 20 ft deck (320 sq ft) creates a complete outdoor living area with space for a lounge, fire pit or outdoor kitchen. In Spokane, the deck’s square footage has the greatest impact on price, so choose a size that matches your lifestyle and budget.