A new deck in Tacoma depends on size, height, material, and railings, but the 2025 Cost vs. Value Report puts national averages at $18,263 for a wood deck addition and $25,096 for a composite deck addition (JLC). Wood decks recoup an estimated 95% of their cost at resale and composite decks 89%. Most attached or raised decks need a building permit, and Washington sales tax applies to the full contract price, 10.4% in Tacoma as of April 1, 2026 (KIRO 7).
What does a deck cost on average?
| Deck type (2025 national average) | Job cost | Resale value | Cost recouped |
| Wood deck addition | $17,323 | 95% | |
| Composite deck addition | $25,096 | $22,199 | 89% |
Source: JLC 2025 Cost vs. Value Report. These are national figures for a defined sample deck, not Tacoma quotes.
Wood or composite: which is better for Tacoma?
Composite costs more up front but needs less maintenance, while wood costs less but needs regular cleaning and sealing. In Western Washington’s wet climate, maintenance matters, since wood surfaces exposed to long rainy seasons need ongoing care.
Choose based on how long you plan to stay and how much upkeep you want. Both recoup most of their cost at resale, according to the 2025 report.
What drives the cost of a deck?
Size, height above grade, material, railing type, stairs, and site conditions drive deck cost. A second-story deck needs taller posts, larger footings, and more railing than a ground-level deck.
Other cost drivers include:- Footings and soils: sloped Tacoma lots may need deeper or engineered footings.
- Attachment to the house: a ledger connection must be flashed and fastened correctly to avoid water damage.
- Railings: metal, glass, or cable railings cost more than wood.
- Extras: built-in lighting, benches, covers, or stairs.
Do I need a permit for a deck in Tacoma?
Most attached decks and decks raised above grade need a building permit from Tacoma Planning and Development Services. Requirements depend on height, size, and whether the deck attaches to the house, so confirm with the city before building.
Permit and inspection timing is part of your schedule. See How Long Does a Design and Construction Project Take in Tacoma, WA? and When Can My Construction or Remodeling Project Start?.
What costs do people forget for a deck?
Sales tax, permits, removing an old deck, and repairs found at the house connection are the most common surprises. Washington requires contractors to collect sales tax on the full contract price for homeowner construction (Washington Department of Revenue).
Removing an old deck often reveals rot at the ledger or rim joist. Our post What Homeowners Should Expect During Construction: Change Orders and Unforeseen Conditions explains how those findings are priced.
Wood vs. composite deck compared
| Factor | Wood | Composite |
| 2025 national cost (JLC) | $18,263 | $25,096 |
| Cost recouped (JLC) | 95% | 89% |
| Maintenance | Regular cleaning and sealing | Occasional cleaning |
| Appearance | Natural wood, weathers over time | Consistent color |
| Best for | Lower up-front budget | Low upkeep over many years |
Ready to plan your deck?
Transparent Construction LLC builds decks as part of residential remodeling and home additions in Tacoma, Gig Harbor, and Bonney Lake, with line-item estimates that show materials, railings, permits, and tax. See Our Portfolio.
Contact Transparent Construction LLC or call 253-339-6117 to schedule a consultation.
Frequently asked questions
Is a deck worth the money?
The 2025 Cost vs. Value Report estimates a wood deck addition recoups 95% of its cost at resale and a composite deck 89%, among the highest returns of any project.
How long does a deck last in the Pacific Northwest?
It depends on material, construction quality, and maintenance. Composite decking needs less upkeep in wet climates, while wood needs regular sealing.
Can I replace my deck boards without a permit?
Replacing surface boards in kind may not need a permit, but structural repairs, new framing, or a new deck usually do. Confirm with Tacoma Planning and Development Services.
Does a covered deck cost more?
Yes. A roof over a deck adds framing, roofing, and sometimes electrical work, and it must tie into the house correctly.
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