2026 / PUBLISHED PILOT
GAD Study Index
Ten practices, three reading-value dimensions, source-linked cases and visible scoring. A starting point for comparative study.
RANKINGS, EXPLAINED
The measure matters.
Read GAD’s own editorial index and annual evaluation framework, alongside a published benchmark for practice size. Every series explains its scope.
GAD / OUR EDITORIAL SERIES
A point of view, with evidence.
GAD 100 / EVIDENCE IN PROGRESS
Global practices
Six dimensions for a broader annual assessment. The current register is a research pool; no global 100 has been declared.
GAD 100 / PEOPLE & SPECIALISMS
Architects & designers
BUILDING DESIGN / 2026 EDITION
WA100 2026
Ten largest practices by number of fee-earning architects.
| Rank | Practice | Country | Architects | Profile |
|---|---|---|---|---|
| 01 | Gensler | United States | 2,716 | Explore |
| 02 | HDR | United States | 1,868 | Explore |
| 03 | Arcadis | Netherlands | 1,781 | Explore |
| 04 | AECOM | United States | 1,529 | Explore |
| 05 | Sweco | Sweden | 1,491 | Explore |
| 06 | Nikken Sekkei | Japan | 1,427 | Explore |
| 07 | DLR Group | United States | 901 | Explore |
| 08 | Heerim | South Korea | 887 | Explore |
| 09 | Perkins&Will | United States | 876 | Explore |
| 10 | CannonDesign | United States | 875 | Explore |
What the numbers mean
Building Design surveys architecture practices and ranks participating firms by the number of fee-earning architects they employ. These are 2026 survey figures, not a live headcount.
What they do not tell you
Size does not establish design quality, suitability for a project or client satisfaction. Specialist and smaller studios can make work of extraordinary importance.
Editorial independence
GAD reproduces a short factual reference with attribution. This is not a GAD-authored league table. Sponsorship cannot change the published order.
Want to explore design recognition rather than practice size? Explore the award guides · Editorial standards