Top 100 Architecture Engineering Firms for 2025

Stantec, HDR, HOK, Arcadis North America, Page, DLR Group, and SmithGroup top Building Design+Construction's ranking of the nation's largest architecture engineering (AE) firms for nonresidential building and multifamily housing work, as reported in BD+C's 2025 Giants 400 Report.

By David Barista, Editorial Director

Sept. 10, 2025
Photo courtesy SmithGroup
The 51,750-sf Advanced Engineering Building elevates the University of Nevada, Las Vegas’s College of Engineering. Photo courtesy SmithGroup
The 51,750-sf Advanced Engineering Building elevates the University of Nevada, Las Vegas’s College of Engineering with expanded research capabilities and a new presence along the campus’ main pedestrian mall. Designed by SmithGroup, the building maximizes transparency and natural light with a large glass curtain wall and metal panel cladding, protected by a variety of external sunshade systems including a horizontal trellis on the south side and mesh screen on the east and west sides. Photo courtesy SmithGroup

Stantec, HDR, HOK, Arcadis North America, Page, DLR Group, and SmithGroup top Building Design+Construction's ranking of the nation's largest architecture engineering (AE) firms for nonresidential building and multifamily housing work, as reported in BD+C's 2025 Giants 400 Report.

For more architecture firm rankings, see BD+C's Top 180 Architecture Firms for 2025.

Source: Building Design+Construction's 2025 Giants 400 Report

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