Mercer Island Addition Market Overview
Mercer Island's addition permit activity is currently slowing, with 0 permits filed in the last 30 days compared to 4 in the prior 30-day window. On average, 2.3 addition permits are filed per month here based on the last six months of data. The most active addition contractors in Mercer Island include LNL BUILDS LLC, MVP CONSTRUCTION LLC, PETER DAVIS BUILDERS INC.
Recent Addition Permits in Mercer Island
| Date | Address | Description | Status |
|---|---|---|---|
| 2026-08-12 | 2740 61ST AVE SE | SIDESEWER RECONNECT - 1SFR + 2 ADUS | ACTIVE |
| 2026-08-12 | 2740 61ST AVE SE | ADU #1 - ATTACHED ADU | ACTIVE |
| 2026-08-12 | 2740 61ST AVE SE | ADU # 2 - ATTACHED ADU | ACTIVE |
| 2026-07-30 | 6743 80TH AVE SE | CONNECT EXTENSION TO EXISTING SEWER | ACTIVE |
| 2026-06-30 | 2740 61ST AVE SE | ADU #2 | APPROVED |
| 2026-06-12 | 8427 SE 36TH ST | 198 SQ FT ADDITION TO SFR | ACTIVE |
| 2026-06-08 | 4040 90TH AVE SE | CONVERT LOWER LEVEL OF SFR TO ADU | ACTIVE |
| 2026-04-30 | 3805 W MERCER WAY | 89 sf ADDITION TO SFR | ACTIVE |
| 2026-04-21 | 6905 96TH AVE SE | CONNECT NEW ADU TO SEWER | ACTIVE |
| 2026-04-10 | 7007 SE MAKER ST | BUILD STUDIO ROOM ADDITION TO THE 2ND FLOOR OF SFR | ACTIVE |
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Research Mercer Island Addition project activity
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Choose this market for a free trial →Frequently Asked Questions
How many Addition permits were filed in Mercer Island in the last 30 days?
Mercer Island has 0 addition permits dated in the last 30 days in the source records currently available on PermitGrab.
What types of Addition work require permits in Mercer Island?
In Mercer Island, permits are typically required for building addition permits including home extensions, room additions, and property expansions. Always check with Mercer Island's building department for specific requirements.
How can a Addition business research project activity in Mercer Island?
Use PermitGrab to review matching addition permit records from Mercer Island’s public source. Use the displayed source date, project scope, and available record fields to research published project activity; a permit is not a request for bids.
How quickly are Addition permits updated on PermitGrab?
The newest displayed source record is dated 2026-08-12. PermitGrab checks the source on each collection cycle and publishes newer records after the source makes them available.