Seattle, Washington · Deck Building
Deck Builder in Edmonds
Edmonds has its own deck handout, and it is stricter than most of the region: even repairing or replacing a deck needs a permit. A critical areas step also comes before the deck plans are reviewed, so allow for it in your schedule.
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Typical price in Seattle: Composite deck, installed$40–$75 per sq ft of deckSource: 5 Seattle-area contractor price pages, price data from September 17, 2026
Good to know in Edmonds
- Source: City of Edmonds
In Edmonds, fixing a deck is permit work too: for single-family homes the city requires a permit to build, repair, replace, relocate, enlarge or alter a deck. The only exemption is an uncovered deck no more than 30 inches above grade, not over a basement or story below and not within a critical area.
- Source: City of Edmonds
Build an extra step into the Edmonds timeline: a Critical Areas Determination from the Planning Division must be completed and on file with the City before the deck permit is reviewed.
- Source: City of Edmonds
A bigger deck costs more to permit in Edmonds, because the fee is based on the square footage of the deck and stairs, and the site plan has to show lot area and lot coverage.
- Source: US Census Bureau, American Community Survey
Edmonds has the oldest housing of the six towns on this site, with a median build year of 1974. When an original deck on one of those houses wears out, its replacement goes through the permit above; the permit guide shows how Seattle's own rules differ.
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