317-622-8970Search all companies →Largest Construction Companies in Washington (2026)
Factur's directory lists 5,599 construction companies in Washington. These are the 10 largest of them by annual revenue, led by McKinstry ($2.5B), PrimeLine Utility Services Co ($1.9B) and Prime Electric Inc ($940M).
Size mix: of the 5,592 with a known headcount, 92.6% have 1-50 employees, 5.9% 51-200, 1.3% 201-1000, 13 companies 1001-5000 and 0 companies 5001+. 30 employ more than 500 people.
The 10 largest construction companies in Washington by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | McKinstry | Seattle | 4,006 | $2.5B |
| 2 | PrimeLine Utility Services Co | Seattle | 3,000 | $1.9B |
| 3 | Prime Electric Inc | Bellevue | 1,476 | $940M |
| 4 | Lease Crutcher Lewis | Seattle | 600 | $916M |
| 5 | Solgen Power LLC | Pasco | 1,000 | $773M |
| 6 | MacDonald-Miller | SeaTac | 1,200 | $764M |
| 7 | Holland Partner Group | Vancouver | 750 | $697M |
| 8 | BNBuilders Inc | Seattle | 1,052 | $670M |
| 9 | Cascade Drilling LP | Bothell | 1,100 | $663M |
| 10 | NAES Corp | Issaquah | 4,000 | $605M |
How this list is ranked
Companies are ranked by annual revenue (USD) as recorded on each company's profile in the Factur directory, highest first; companies with the same revenue are ordered by employee count. Only companies with a positive revenue figure on file are ranked, so a large private company with no reported revenue can be missing. The list covers companies whose record places them in Washington and whose Factur industry is Construction. Figures are a snapshot of the directory, refreshed when the rankings are regenerated; open a profile for its current data.