Decks and Patios in Kirkland, WA
A composite deck in Kirkland costs $62 to $112 per square foot at ground level, and elevated lake-view decks $95 to $185. Kirkland decks either face the lake or sit under the trees, and both settings shape the design: views decide the railing, and trees decide where the footings can go.
Kirkland deck and patio costs
| Project | Typical Kirkland range | Where it fits |
|---|---|---|
| Elevated lake-view deck, composite | $95 – $185 per sq ft | Houghton, Lakeview, Moss Bay |
| Ground-level deck under trees, composite | $62 – $112 per sq ft | Finn Hill, Juanita |
| Deck replacement on a subdivision home | $60 – $115 per sq ft | Rose Hill, Kingsgate, Totem Lake |
| Covered patio | $95 – $180 per sq ft | Most neighborhoods |
| Cable or glass railing | $150 – $450 per linear ft | View decks |
Kirkland decks by setting
Lake-view decks come off main floors above sloping yards. They need engineered footings and bracing, and a railing that keeps the view from a chair: glass or cable.
Wooded lots shade decks year-round and drop needles. Capped composite or PVC with good airflow underneath outlasts cedar there. Footings must stay outside the critical root zones of protected trees; decks sometimes span or cantilever over roots.
Subdivision decks from the 1980s and 1990s are often pressure-treated with unflashed ledgers. Replacement in composite, often larger than the original, is common.
Kirkland deck rules
Decks more than 30 inches above grade, attached decks, larger decks and roofed structures need permits through MyBuildingPermit. The tree code may require an arborist's input for footings near significant trees. Shoreline rules apply near the lake, and HOAs may regulate deck materials and colors.
Kirkland deck and patio questions
Can I build a deck near a protected tree?
Usually, with footings outside the root zone and the deck framed to span over it. An arborist's plan may be required.
What railing is best for a lake view?
Glass for an unobstructed view, cable for a nearly clear view at lower cost.
Is cedar a bad idea under firs?
Not always, but cedar on low, shaded decks wears out fast. Composite or PVC is usually the better choice there.
My old deck has no permit. Does the new one need one?
If it meets any permit trigger, yes, regardless of the old deck's history.