317-622-8970Search all companies →Largest Construction Companies in Oregon (2026)
Factur's directory lists 2,677 construction companies in Oregon. These are the 10 largest of them by annual revenue, led by Fortis Construction Inc ($2.2B), development services LLC ($1.9B) and Hoffman Construction Co ($1.5B).
Size mix: of the 2,675 with a known headcount, 92.3% have 1-50 employees, 5.8% 51-200, 1.6% 201-1000, 6 companies 1001-5000 and 1 company 5001+. 15 employ more than 500 people.
The 10 largest construction companies in Oregon by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | Fortis Construction Inc | Portland | 450 | $2.2B |
| 2 | development services LLC | Portland | 6,568 | $1.9B |
| 3 | Hoffman Construction Co | Portland | 2,282 | $1.5B |
| 4 | EC Electric Inc | Portland | 1,142 | $883M |
| 5 | Harder Mechanical Contractors Inc | Portland | 1,348 | $858M |
| 6 | Oeg | Portland | 2,300 | $750M |
| 7 | Walsh Construction Co | Portland | 500 | $523M |
| 8 | Perlo Construction LLC | Tualatin | 300 | $415M |
| 9 | Advanced Technology Group Inc | Hillsboro | 575 | $366M |
| 10 | Wilson Construction Co | Canby | 600 | $366M |
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 Oregon 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.