King County Addition Market Overview
King County's addition permit activity is currently slowing, with 53 permits filed in the last 30 days compared to 76 in the prior 30-day window. On average, 50.2 addition permits are filed per month here based on the last six months of data. The most active addition contractors in King County include Richard Creamer, Permit Manager, Robert Greaves.
Recent Addition Permits in King County
| Date | Address | Description | Reported Value | Status |
|---|---|---|---|---|
| 2026-09-19 | 23050 NE 102ND ST, REDMOND WA 98053 | MICROSOFT CORPORATION TENANT IMPROVEMENT | Not listed on permit | Intake Processing |
| 2026-09-18 | 10928 26TH AVE SW, SEATTLE WA 98146 | NEHEM PROPERTIES LLC - DETACHED ACCESSORY DWELLING... | $286,629 | Intake Processing |
| 2026-09-18 | 10928 26TH AVE SW, SEATTLE WA 98146 | NEHEM PROPERTIES LLC - DETACHED ACCESSORY DWELLING... | $286,629 | Intake Processing |
| 2026-09-18 | Address pending | HERSHOLT PIER AND DECK REPAIRS | Not listed on permit | Intake Processing |
| 2026-09-17 | 20019 324TH AVE NE, DUVALL WA 98019 | Basement Egress Window Design | Not listed on permit | Intake Processing |
| 2026-09-17 | 10101 12TH AVE S, SEATTLE WA 98168 | Sobba-Pugh Basement Remodel | Not listed on permit | Intake Processing |
| 2026-09-17 | 20724 SE 416TH ST, 98022 | GONZALES - DETACHED CARPORT - Gonzales Carport | Not listed on permit | Intake Processing |
| 2026-09-17 | 10101 12TH AVE S, SEATTLE WA 98168 | (PRO) SOBBA-PUGH BASEMENT REMODEL | $10,248 | Intake Processing |
| 2026-09-17 | 17210 VASHON HWY SW, VASHON WA 98070 | Ober Park Reroof | Not listed on permit | Void |
| 2026-09-17 | 17210 VASHON HWY SW, VASHON WA 98070 | VASHON PARK DISTRICT TENANT IMPROVEMENT | $129,000 | Intake Processing |
Choose this market for a free trial to see all Addition permits in King County
Research King County Addition project activity
Access matching addition permit records, available public-source details, and alerts when newer records are published.
Choose this market for a free trial →Frequently Asked Questions
How many Addition permits were filed in King County in the last 30 days?
King County has 53 addition permits dated in the last 30 days in the source records currently available on PermitGrab.
What types of Addition work require permits in King County?
In King County, permits are typically required for building addition permits including home extensions, room additions, and property expansions. Always check with King County's building department for specific requirements.
How can a Addition business research project activity in King County?
Use PermitGrab to review matching addition permit records from King County’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 2026-09-19. PermitGrab checks the source on each collection cycle and publishes newer records after the source makes them available.