Home project costs in Seattle, WA
Seattle Department of Construction and Inspections (SDCI) · fee schedule 2026
2026 Fee Subtitle (SMC Ch. 22.900) effective Jan 1, 2026. Construction permit fees rose 18% YoY; most other fees +6.5%. Base/hourly rate $292. 5% technology fee (22.900A.100). WA State Building Code Council $6.50 on each residential building permit (RCW 19.27.085).
Projects
- Roof replacement in Seattle, ~$12,110
Asphalt-shingle tear-off and reroof, typical house.
$12,110
$7,623 – $55,532 all-in typical range
- HVAC replacement in Seattle, ~$8,392
Like-for-like furnace plus AC or a heat pump, existing ducts.
$8,392
$5,573 – $24,434 all-in typical range
- Deck in Seattle, ~$18,334
New attached deck, ground-level to one story.
$18,334
$12,530 – $24,290 all-in typical range
- Kitchen remodel in Seattle, ~$34,243
Mid-range remodel on the same footprint. Not a luxury gut.
$34,243
$17,353 – $57,130 all-in typical range