Data Center General Contractors

Top data center contractors: the ENR 2026 ranking

HITT Contracting is the largest data center builder in ENR’s 2026 ranking with $10.65 billion of 2025 sector revenue↗, ahead of Turner ($9.33 billion)↗, Holder ($8.53 billion)↗ and DPR ($8.06 billion)↗. The 19 general contractors from ENR’s top 20 listed here billed $79.9 billion between them.

19 contractorsChecked

HITT Contracting1410,653.548248410410042026-11-11
Turner Construction239,334.4333313138032026-11-11
Holder Construction338,52738331231539232026-11-11
DPR Construction448,059.4457474849042026-11-11
Mortenson544,833.144541042246042026-11-11
Clayco624,706.22582202212022026-11-11
Whiting-Turner723,895.8227252427122026-11-11
STO Building Group (Structure Tone)933,529323333638432026-11-11
Fortis Construction1023,289.929224625727422026-11-11
Hensel Phelps1142,973.242841141344842026-11-11
Walbridge1242,791.544542642445042026-11-11
JE Dunn Construction1332,68633332131838332026-11-11
Clune Construction1432,57037134535836732026-11-11
Gray1542,51544743043646442026-11-11
The Walsh Group1642,252.542541641641642026-11-11
Suffolk Construction1722,180.9228223228210022026-11-11
Brasfield & Gorrie1842,028.54264244234842026-11-11
T5 Construction Services1921,666.321002802—022026-11-11
Ryan Companies2031,3833293333433632026-11-11

How ENR ranks data center contractors

How the data is sourced

ENR’s Top 400 Contractors list (May 25, 2026 issue) ranks US contractors by 2025 construction revenue and breaks each firm’s revenue into market sectors. Data centers sit in the telecommunications sector, alongside cabling and towers, and ENR prints a Top 20 for each sector. That sector grew 86.4% from 2024 to 2025 and passed $100 billion, 15.1% of all Top 400 revenue.

Read rank, revenue and share together

Rank is sector revenue in dollars. Share is how much of the firm the sector makes up: Fortis earned 92% of its 2025 revenue in the sector↗, Holder 83%↗ and Turner 33%↗. A high share buys you a team that does nothing else; a big absolute number buys you buying power and bench depth.

Who climbed

Mortenson moved from No. 22 to No. 10 on the overall Top 400↗, Clune from No. 58 to No. 45↗ and Gray from No. 36 to No. 30↗. MasTec, No. 8 on ENR’s sector list, is left out here: its telecom revenue is mainly fiber and wireless networks rather than data center general contracting.

For builders ranked by megawatts delivered and their reference projects, see the sister directory datacenterconstructioncompanies.com.