409 18th Ave E

Building permits, Seattle, WA

409 18th Ave E, Seattle has 2 building permits on record. The most recent, issued Feb 10, 2026, is for single family or duplex: Residential reroof only; no structural changes. Remove existing shingles. No plywood replacement planned but if needed we will replace with 1/2" CDX. Install Owens Corning Duration…

All permits at this address

All permits at 409 18th Ave E
Date	Type	Work	Cost
Feb 10, 2026	Single Family or Duplex	Residential reroof only; no structural changes. Remove existing shingles. No plywood replacement planned but if needed we will replace with 1/2" CDX. Install Owens Corning…	$21,280
Nov 10, 2005	Addition or alteration	Closed as Incomplete - Expired Permit Construct 1-story addition with roof-top deck deck addition and alterations throughout existing single family residence and create accessory…	$75,000

Checked 2026-10-01 12:27 UTC against Seattle Department of Construction and Inspections permit data. Markdown · JSON