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Building permits · updated Oct 21, 2026
South King County, WA building permits
Over 350 new projects
140+ being built now and 90+ waiting for their permit
No card. Names and phone numbers are inside the app.
EarlyFraming & rough-insFinishingEach dot is one project, moved to its own spot inside a square about 450 m across: no dot sits on a house.Imagery: USDA, USGS The National Map
South King County has over 350 new projects on the Build Radar map: 140+ being built now and 90+ waiting for their permit. Auburn has the most (110+), then Renton (100+) and Kent (80+). Of those being built, 40+ are early - site work and foundation; 20+ are in framing and rough-ins; 40+ are finishing - insulation and drywall. The biggest trade window right now: framing work coming up on 110+ houses.
Week · Oct 15 - Oct 21, 2026
This week in South King County
By the day each permit was filed (or issued, where the county gives only that).
Work coming up in South King County
Houses that reach each trade's stage soon. Tap a trade to see where they are.
Where the work is
Towns with 10 projects in progress or more.
| Town | On the map | Early | Building | Finishing |
|---|---|---|---|---|
| Auburn | 110+ | 20+ | 10+ | 20+ |
| Renton | 100+ | 10+ | under 10 | under 10 |
| Kent | 80+ | under 10 | under 10 | under 10 |
| Federal Way | 40+ | 10+ | under 10 | 10+ |
Build stage today
Projects in progress by the last inspection they passed.
Site workunder 10
Foundation10+
Groundworkunder 10
Framing & roof deck10+
Rough-insunder 10
Insulation30+
Drywall10+
What is being built
New permits per month
How to read a building permit
- 1
Filed and in review
The builder sends plans and the county or city checks them. Nothing is built yet. Here, 90+ permits are waiting now.
- 2
Issued
The work can start. The permit number goes on the job site and the inspections begin.
- 3
Inspections
Foundation, framing, rough-ins, insulation, drywall. Each passed inspection tells you where the house is - and which trade is next.
- 4
Final
The house passes its final inspection and gets its certificate. It is finished, and it leaves these counts.
Questions
How many new houses are being built in South King County, WA?
Over 350 new projects are on the Build Radar map in South King County, WA - 140+ being built now and 90+ waiting for their permit. These counts are from the public permit records on Oct 21, 2026.
Which towns in South King County, WA have the most new construction?
Auburn (110+), Renton (100+) and Kent (80+). The table on this page lists every town with 10 projects or more.
Where do I find building permits for South King County, WA?
The county and each city keep their own permit records. Build Radar reads all of them and puts every new building on one map with its build stage. The map is updated every week.
How do I get construction leads in South King County, WA?
Pick your trade on this page. Build Radar shows the houses that reach your stage soon, the builder and the phone numbers on file. You can start with 3 free projects, with no card.
Where these numbers come from
Build Radar reads the public permit records of each county and city - the permits, their status and their inspections - and puts every new building on one map. These counts were made on Oct 21, 2026.
Each number is rounded down to the nearest 10, and a number under 10 is not shown. Finished houses, cancelled or expired permits and permits a year old with no recent inspection are not counted. Each dot on the map is moved to its own spot inside a square about 450 m across, so no dot sits on a house.
Inside the app each project shows its build stage, the builder, the plans when the county posts them and the phone numbers on file.
South King County is building.
Start with 3 free projectsNo card. Pick the projects you want and see who to call.