Stantec, HDR, HOK, and SOM top the rankings of the nation's largest architecture engineering (AE) firms for nonresidential and multifamily buildings work, as reported in Building Design+Construction's 2021 Giants 400 Report.
| Top 95 Architecture/Engineering Firms for 2021 | ||
| FIRM | 2020 REVENUE | |
| 1 | Stantec | $688,974,028 |
| 2 | HDR | $585,400,000 |
| 3 | HOK | $447,000,000 |
| 4 | Skidmore, Owings & Merrill | $340,869,307 |
| 5 | DLR Group | $279,565,000 |
| 6 | CallisonRTKL | $273,026,107 |
| 7 | Smithgroup | $267,168,526 |
| 8 | IBI Group* | $252,322,000 |
| 9 | Page | $206,243,000 |
| 10 | CannonDesign | $190,000,000 |
| 11 | PGAL | $179,200,000 |
| 12 | PBK | $174,800,000 |
| 13 | Ware Malcomb | $160,272,290 |
| 14 | HGA | $150,376,927 |
| 15 | NORR | $128,839,831 |
| 16 | Gresham Smith | $128,160,701 |
| 17 | EYP | $124,775,275 |
| 18 | EwingCole | $108,500,000 |
| 19 | Flad Architects | $107,700,000 |
| 20 | LPA | $103,230,795 |
| 21 | Humphreys and Partners | $101,000,000 |
| 22 | Leo A Daly | $93,870,859 |
| 23 | HED | $90,910,000 |
| 24 | Huckabee | $88,467,417 |
| 25 | RS&H | $85,100,000 |
| 26 | Clark Nexsen | $72,240,000 |
| 27 | SLAM | $68,399,211 |
| 28 | Wold Architects and Engineers | $66,050,000 |
| 29 | Little Diversified Architectural Consulting | $63,369,659 |
| 30 | Goodwyn Mills Cawood | $54,356,191 |
| 31 | Core States Group | $48,423,057 |
| 32 | E4H Environments for Health Architecture | $47,000,000 |
| 33 | Progressive AE | $45,155,862 |
| 34 | BSA LifeStructures | $43,144,365 |
| 35 | RDG Planning & Design | $41,023,198 |
| 36 | H2M Architects + Engineers | $39,479,220 |
| 37 | CESO | $39,365,886 |
| 38 | Bergmann | $39,180,000 |
| 39 | LaBella Associates | $38,428,000 |
| 40 | CPL | $35,548,808 |
| 41 | Bermello Ajamil & Partners | $35,002,668 |
| 42 | G70 | $34,662,496 |
| 43 | GreenbergFarrow | $33,715,000 |
| 44 | WD Partners | $32,400,000 |
| 45 | Kahler Slater | $30,770,000 |
| 46 | Hoefer Welker | $29,403,000 |
| 47 | Ryan Companies US / Ryan A+E | $29,011,000 |
| 48 | AE7 | $28,666,471 |
| 49 | BSB Design | $28,271,751 |
| 50 | KZF Design | $28,224,951 |
| 51 | BKV Group | $26,925,531 |
| 52 | Sheehan Nagle Hartray Architects | $26,184,756 |
| 53 | Woolpert | $26,126,359 |
| 54 | GMB Architecture + Engineering | $26,011,414 |
| 55 | Hollis + Miller Architects | $25,711,480 |
| 56 | Huitt-Zollars | $23,640,045 |
| 57 | Clark & Enersen | $22,976,324 |
| 58 | DLZ Corp. | $22,908,867 |
| 59 | Barge Design Solutions | $22,268,972 |
| 60 | Lawrence Group | $22,139,868 |
| 61 | Fanning Howey Associates | $22,124,899 |
| 62 | Wendel | $21,615,494 |
| 63 | Becker Morgan Group | $20,842,926 |
| 64 | Baskervill | $19,861,254 |
| 65 | Cromwell Architects Engineers | $19,608,013 |
| 66 | Larson Design Group | $19,155,356 |
| 67 | TETER | $18,588,242 |
| 68 | SHP | $18,000,000 |
| 69 | Onyx Creative | $16,898,115 |
| 70 | BCA Architects & Engineers | $14,895,000 |
| 71 | BBS Architects | $12,681,939 |
| 72 | CSArch | $12,280,207 |
| 73 | KGD Architecture | $11,884,564 |
| 74 | CBRE | $11,305,250 |
| 75 | Hafer | $10,955,111 |
| 76 | Garmann Miller & Associates | $10,632,800 |
| 77 | DLA Architects | $10,159,751 |
| 78 | Álvarez-Díaz & Villalón | Architecture & Interior Design | $9,795,504 |
| 79 | Rosemann & Associates | $9,620,000 |
| 80 | Randall-Paulson Architects | $9,506,204 |
| 81 | Emersion Design | $9,406,573 |
| 82 | Eckenhoff Saunders Architects | $9,400,000 |
| 83 | Design Collaborative | $9,131,330 |
| 84 | Performa | $8,645,000 |
| 85 | Nehmer | $8,450,000 |
| 86 | Kitchen & Associates | $8,018,422 |
| 87 | KG+D Architects | $7,799,008 |
| 88 | Base4 | $7,708,335 |
| 89 | H. Hendy Associates | $7,422,652 |
| 90 | AG Architecture | $6,709,646 |
| 91 | PF&A Design | $6,373,157 |
| 92 | FreemanWhite, a Haskell Company | $5,959,730 |
| 93 | Architectural Design Consultants | $5,929,900 |
| 94 | RQAW | $5,267,267 |
| 95 | VEBH Architects | $4,587,555 |
| 96 | //3877 | $3,376,000 |
| 97 | GRW | $3,200,135 |
| 98 | Walbridge | $2,480,000 |
| 99 | Osports | $2,391,906 |
| 100 | Sebree Architects | $1,400,000 |
SOURCE: 2021 Giants 400 Report *Editors' estimate Note: GMB Architecture + Engineering was moved from Top 40 Engineering/Architecture Firms for 2021 on 10/27/21.
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