County Market Overview
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Washington State
King County Public Construction Insights
Detailed public works bidding spend, project activity metrics, top awarded prime contractors, and major public agency awards compiled from WA State records (2015–2025).
Ongoing Data Ingestion: Data for 2023, 2024, and 2025 is continuously being updated as new state filings are processed.
Total Spend
$25.36B
Total Projects
107,579
King County Yearly Growth (2015–2025)
Dual line chart: Total Spend ($) solid blue line vs Total Projects dashed slate line
Total Spend ($)
Total Projects
Swipe horizontally to explore trends
* Note: Data for 2023–2025 is actively being updated as new state affidavit & intent filings are processed.
WA L&I Public Records
Top Prime Contractors
Ranked by Award Volume$861.45M
17 projects
$773.50M
47 projects
$693.04M
40 projects
$655.38M
11 projects
$617.77M
9 projects
$572.81M
15 projects
$570.51M
1,169 projects
$567.84M
23 projects
$516.42M
28 projects
$462.33M
87 projects
Top Awarding Public Agencies
TRANSPORTATION, WASH STATE DEPT OF
$2.72B
SEATTLE, PORT OF
$2.62B
University of Washington
$1.91B
SEATTLE, CITY OF
$1.21B
SEATTLE SCHOOL DISTRICT
$1.05B