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 #: ADU21-005
| Project Name: | |
|---|---|
| Jurisdiction: | Mercer Island |
| Type: | ADU |
| Address: | 4250 89TH AVE SE |
| Parcel: | 4457300210 |
| Status: | APPROVED |
|---|---|
| Applied Date: | 4/8/2021 |
| Application Expiration: | |
| Issued Date: | 8/24/2021 |
| Finaled Date: | 1/1/1900 |
| Permit Expiration: |
Description
BUILD NSFR W/ATTACHED ADU
See Permit or Approved Plans for Conditions