Strength in key markets drives Salas O’Brien’s ranking on BD+C’s 2025 Giants 400 list

Salas O’Brien has again earned recognition among the nation’s leading design firms, securing the #3 spot on Building Design+Construction’s 2025 Giants 400 list of Top Engineering Firms. The annual report highlights the architecture, engineering, and construction firms shaping the built world, and this year’s results emphasize a broader perspective: organizations across critical sectors are turning to technical experts who can keep their facilities operating reliably and sustainably.

That demand shows up clearly in top sector rankings, where Salas O’Brien continues to be recognized among the engineering leaders in mission-critical environments:

Healthcare – #5 (Top 100)
Data Center – #17 (Top 80)
Industrial – #7 (Top 110)
Science and Technology, Laboratories – #6 (Top 80)
Government – #12 (Top 110)

Our strength comes from the teams and the way we’re organized. A connected model brings expertise together across geographies and sectors, helping us respond and meet client needs wherever they surface. Paired with a diversified portfolio, strong client relationships, and an agile team, this positions us to excel in the markets where uptime and reliability matter most.

Darin AndersonChairman & CEO

These results reinforce Salas O’Brien’s momentum in key sectors and highlight the vital role teams play in helping clients address complex challenges with thoughtful, high-performing design solutions.

View the full 2025 Giants 400 report and rankings on Building Design+Construction here.

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