Notice: Temporary Service Interruption

MyBuildingPermit will be offline to perform scheduled maintenance on Monday, November 9, 2026, from 5:00 p.m. until approximately 9:00 p.m. We appreciate your patience during this maintenance period. Thank you.

Permit/Application Details

Information for Permit #: ADU19-010

Project Name:
Jurisdiction: Mercer Island
Type: ADU
Address: 3869 80TH AVE SE
Parcel: 5459000255
Status: APPROVED
Applied Date: 11/26/2019
Application Expiration:
Issued Date: 12/23/2019
Finaled Date: 1/1/1900
Permit Expiration:

Description

502 sq ft ADU WITHIN SFR

  See Permit or Approved Plans for Conditions