January 23, 2024
![](https://www.aoarchitects.com/wp-content/uploads/24_0207_wylden_1_1200x750.jpg)
by Building Design+Construction
Choate Parking Consultants, Page Southerland Page, Gensler, AO, and Elkus Manfredi Architects top BD+C’s ranking of the nation’s largest parking structure architecture and architecture engineering (AE) firms for 2023, as reported in the 2023 Giants 400 Report.