Job Cost Engine

How Much Does It Cost to Build a Deck in Washington?

Default-scope CostAnswer range in Washington (ZIP 98001): about $7,097 (roughly $5,700–$8,700). Labor uses Washington BLS wages; materials are national. Change the ZIP below for your place.

Your numbers

What should a deck cost?

ZIP, the quantities you can actually measure, and a few named modifiers. The range is a CostAnswer estimate, not a market quantile.
Mapped to county with an approximate ZIP/ZCTA match, not a HUD USPS crosswalk.
square feet of deckLength × width of the walking surface, in square feet.

Common questions

Questions before you call a contractor

How much does a deck cost?

Put your ZIP code and the size of the job into the form on this page. It prices the labor from what that trade earns in your area (BLS), adds what employers pay on top of wages, and lists every material and piece of equipment it counts.

The result is a range for planning, not a bid. If a key material has no published price yet, the range says so instead of guessing.

What is included in the deck estimate?

Length × width of the walking surface, in square feet.

The work is priced at carpentry wages. The options on the form change the hours or the materials; they do not pull an average price for your city.

Why is a contractor’s quote different?

A quote prices your house: how easy it is to reach, what your permit office charges, and how busy that company is. This page prices a standard version of the job from published wages and material costs.

Paste a written bid into Check a quote to see whether it sits low, in the middle or high against the same job.

Does this deck estimate include stairs and railings?

The default recipe includes standard perimeter code-compliant railings for elevated decks.

Custom multi-flight staircases, built-in bench seating, pergolas, or composite brand-name decking require additional materials and labor.

Why does deck cost differ in Washington?

Materials use the same national sourced baselines everywhere. Crew wages come from BLS OEWS for Washington, so labor-heavy jobs move more than material-heavy ones.

Trade wages here run about 22% above the national crew wage bill for this recipe.

How the estimate is worked out

  • Unit. Length × width of the walking surface, in square feet.
  • Location. Labor is priced at Washington wages from the BLS wage survey. A ZIP code is matched to its county, which is close but not exact for ZIPs that cross county lines.
  • Why there is a page for this state. Labor for this job costs noticeably more or less in Washington than nationally, enough to move the range. Material prices are the same in every state here.