Kimley-Horn, WSP, Terracon, Tetra Tech, and Langan head the rankings of the nation's largest engineering firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2021 Giants 400 Report.
| Top 75 Engineering Firms for 2021 | ||
| FIRM | 2020 REVENUE | |
| 1 | Kimley-Horn | $568,704,813 |
| 2 | WSP USA | $427,524,789 |
| 3 | Terracon Consultants* | $333,200,000 |
| 4 | Tetra Tech High Performance Buildings Group | $275,271,866 |
| 5 | Langan | $265,000,000 |
| 6 | IMEG Corp. | $224,013,000 |
| 7 | Arup | $201,742,315 |
| 8 | KPFF Consulting Engineers | $196,364,000 |
| 9 | Jensen Hughes | $168,616,860 |
| 10 | Affiliated Engineers Inc. | $158,545,000 |
| 11 | Henderson Engineers | $127,760,939 |
| 12 | Walter P Moore | $123,338,091 |
| 13 | Syska Hennessy Group | $119,163,759 |
| 14 | Fluor Corp. | $99,440,000 |
| 15 | Vanderweil Engineers | $96,610,100 |
| 16 | Pennoni* | $94,656,000 |
| 17 | M.C. Dean | $77,787,370 |
| 18 | ESD | $71,584,764 |
| 19 | TLC Engineering Solutions | $69,643,721 |
| 20 | CMTA | $67,150,322 |
| 21 | Jaros, Baum & Bolles | $64,580,081 |
| 22 | AKF Group | $63,400,000 |
| 23 | RMF Engineering | $60,000,000 |
| 24 | ME Engineers | $57,550,000 |
| 25 | DeSimone Consulting Engineers | $54,127,073 |
| 26 | Magnusson Klemencic Associates | $53,738,949 |
| 27 | Arora Engineers | $47,395,349 |
| 28 | I.C. Thomasson Associates | $45,814,885 |
| 29 | Smith Seckman Reid | $45,007,506 |
| 30 | P2S | $44,272,937 |
| 31 | Martin/Martin Consulting Engineers | $40,285,857 |
| 32 | HEAPY | $38,881,623 |
| 33 | Mazzetti | $38,158,927 |
| 34 | Bala Consulting Engineers | $36,900,000 |
| 35 | Newcomb & Boyd | $36,121,754 |
| 36 | HPE Data Center Technologies Services (Facilities Consulting) | $33,700,000 |
| 37 | Osborn Engineering | $32,744,000 |
| 38 | raSmith | $30,600,000 |
| 39 | M/E Engineering | $28,465,000 |
| 40 | ThermalTech Engineering | $25,477,000 |
| 41 | Wallace Design Collective | $24,700,000 |
| 42 | Dunham Associates | $24,670,000 |
| 43 | H.F. Lenz | $24,111,000 |
| 44 | TEECOM | $23,196,162 |
| 45 | LBYD | $22,396,139 |
| 46 | French & Parrello Associates | $22,196,623 |
| 47 | KCI Technologies | $20,063,200 |
| 48 | Spectrum Engineers | $19,627,296 |
| 49 | Bridgers & Paxton Consulting Engineers | $19,148,968 |
| 50 | Specialized Engineering Solutions | $17,257,550 |
| 51 | Swanson Rink | $17,165,115 |
| 52 | EYP Mission Critical Facilities | $16,700,000 |
| 53 | Peter Basso Associates | $14,900,000 |
| 54 | Schaefer | $13,941,058 |
| 55 | Karpinski Engineering | $13,200,500 |
| 56 | Kohrs Lonnemann Heil Engineers | $12,915,464 |
| 57 | PBS Engineers | $12,203,000 |
| 58 | McKinstry | $12,000,000 |
| 59 | RMH Group, The | $11,562,362 |
| 60 | JQ Engineering | $11,316,761 |
| 61 | Kohler Ronan | $10,685,797 |
| 62 | Allen + Shariff | $9,459,083 |
| 63 | OLA Consulting Engineers | $9,167,477 |
| 64 | Tighe & Bond | $8,540,000 |
| 65 | MHP Structural Engineers | $7,137,443 |
| 66 | TAS Energy | $7,125,000 |
| 67 | G2 Consulting Group | $6,930,000 |
| 68 | DHE Engineering | $6,919,756 |
| 69 | Architectural Engineers | $6,907,886 |
| 70 | SSC Engineering | $6,734,533 |
| 71 | Paradigm Structural Engineers | $6,569,792 |
| 72 | Wick Fisher White | $6,271,000 |
| 73 | KCL Engineering | $5,083,849 |
| 74 | JP Harvey Engineering Solutions | $4,906,928 |
| 75 | New York Engineers | $3,426,500 |
| 76 | JALRW Engineering Group | $2,900,000 |
| 77 | Weitz Company, The | $1,738,500 |
| 78 | Structured Engineering Solutions | $1,400,000 |
| 79 | Marque Engineering | $1,375,822 |
SOURCE: 2021 Giants 400 Report *Editors' estimate Note: WSP USA was moved from the Top 40 Engineering/Architecture (EA) Firms list on 9/2/21.
BACK TO THE 2021 GIANTS 400 LANDING PAGE
Related Stories
Giants 400 | Oct 24, 2019
Top 125 Retail Architecture Firms for 2019
CallisonRTKL, Gensler, MG2, NELSON, and Stantec top the rankings of the nation's largest retail sector architecture and architecture engineering (AE) firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 24, 2019
2019 Retail Giants Report: Retailers ring up innovative approaches to engaging customers
New shopping environments range from ambitious mixed-use developments to rotating pop-up locations. This and more trends from BD+C's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
Top 10 Convention Center Sector Construction Firms for 2019
Lendlease, Turner, Clark, and Webcor top the rankings of the nation's largest convention center sector contractors and construction management firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
Top 30 Convention Center Sector Engineering Firms for 2019
Jacobs, MKA, Walker Consultants, ESD, and AECOM head the rankings of the nation's largest convention center sector engineering and engineering architecture (EA) firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
Top 30 Convention Center Sector Architecture Firms for 2019
LMN Architects, Gensler, Populous, Fentress Architects, and Moody Nolan top the rankings of the nation's largest convention center sector architecture and architecture engineering (AE) firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
2019 Convention Center Sector Giants Report: Events facilities serve as urban ambassadors
Convention centers focus on providing a more complete user experience for attendees. This and more convention center sector trends from BD+C's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
Top 65 Cultural Sector Construction Firms for 2019
Whiting-Turner, Turner, PCL, Clark Group, and Gilbane top the rankings of the nation's largest cultural facility sector contractors and construction management firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
Top 70 Cultural Sector Engineering Firms for 2019
Jacobs, Arup, EXP, BRPH, and Thornton Tomasetti head the rankings of the nation's largest cultural facility sector engineering and engineering architecture (EA) firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
Top 110 Cultural Sector Architecture Firms for 2019
Gensler, Populous, DLR Group, Stantec, and Perkins and Will top the rankings of the nation's largest cultural facility sector architecture and architecture engineering (AE) firms, as reported in Building Design+Construction's 2019 Giants 300 Report.
Giants 400 | Oct 3, 2019
2019 Cultural Facility Giants Report: New libraries are all about community
The future of libraries is less about being quiet and more about hands-on learning and face-to-face interactions. This and more cultural sector trends from BD+C's 2019 Giants 300 Report.
