317-622-8970Search all companies →Largest Construction Companies in Wisconsin (2026)
Factur's directory lists 3,216 construction companies in Wisconsin. These are the 10 largest of them by annual revenue, led by Swfcontract ($5.7B), D?rr Group ($5.3B) and Michels Corp ($4.1B).
Size mix: of the 3,211 with a known headcount, 89.7% have 1-50 employees, 7.2% 51-200, 2.4% 201-1000, 14 companies 1001-5000 and 6 companies 5001+. 44 employ more than 500 people.
The 10 largest construction companies in Wisconsin by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | Swfcontract | Middleton | 9,000 | $5.7B |
| 2 | D?rr Group | Bietigheim-Bissingen | 20,490 | $5.3B |
| 3 | Michels Corp | Brownsville | 8,000 | $4.1B |
| 4 | Miron Construction Co. Inc | Neenah | 1,700 | $1.7B |
| 5 | Faith Technologies | Menasha | 2,500 | $1.6B |
| 6 | JH Findorff & Son Inc | Madison | 1,050 | $1.1B |
| 7 | Precision Pipeline LLC | Eau Claire | 1,600 | $1B |
| 8 | JP Cullen Co | Janesville | 750 | $850M |
| 9 | Equix Inc | Fond du Lac | 1,250 | $796M |
| 10 | InterCon Construction Inc | Waunakee | 1,000 | $631M |
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 Wisconsin 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.