Kimley-Horn, WSP, Tetra Tech, Langan, and IMEG head the rankings of the nation's largest engineering firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2023 Giants 400 Report.
| Top 75 Engineering Firms for 2023 | ||
| FIRM | 2022 REVENUE | |
| 1 | Kimley-Horn | $1,047,823,000 |
| 2 | WSP | $838,007,376 |
| 3 | Tetra Tech High Performance Buildings Group | $488,243,637 |
| 4 | Langan | $393,500,000 |
| 5 | IMEG | $373,020,000 |
| 6 | Fluor | $294,951,301 |
| 7 | NV5 Global | $264,707,370 |
| 8 | Arup | $235,827,936 |
| 9 | Jensen Hughes | $226,574,651 |
| 10 | KPFF Consulting Engineers | $203,733,218 |
| 11 | Affiliated Engineers | $181,344,000 |
| 12 | Henderson Engineers | $152,571,882 |
| 13 | CMTA | $146,823,899 |
| 14 | Olsson | $136,592,778 |
| 15 | Walter P Moore | $132,775,174 |
| 16 | Syska Hennessy Group | $127,724,516 |
| 17 | BR+A | $126,500,000 |
| 18 | M.C. Dean | $122,356,723 |
| 19 | Vanderweil Engineers | $104,440,100 |
| 20 | BKF Engineers | $102,387,164 |
| 21 | TLC Engineering Solutions | $94,079,662 |
| 22 | Jaros, Baum & Bolles | $90,250,500 |
| 23 | ESD (now Stantec Consulting Services, Inc.) | $86,492,583 |
| 24 | I.C. Thomasson Associates | $75,774,000 |
| 25 | DeSimone Consulting Engineering | $73,711,329 |
| 26 | Smith Seckman Reid (SSR) | $69,725,955 |
| 27 | RMF Engineering | $63,000,000 |
| 28 | ME Engineers | $62,000,000 |
| 29 | Magnusson Klemencic Associates | $61,702,159 |
| 30 | AKF | $61,142,672 |
| 31 | Interface Engineering | $59,108,929 |
| 32 | HPE Sustainable Data Center Modernization | $57,109,000 |
| 33 | P2S | $55,980,158 |
| 34 | Jordan & Skala Engineers | $53,999,459 |
| 35 | ThermalTech Engineering | $51,171,000 |
| 36 | Arora Engineers | $49,004,158 |
| 37 | RTM Engineering Consultants | $48,219,000 |
| 38 | McKinstry | $47,000,000 |
| 39 | Bala Consulting Engineers | $46,000,000 |
| 40 | Wallace Design Collective | $42,800,000 |
| 41 | Martin/Martin | $41,896,505 |
| 42 | Newcomb & Boyd | $40,211,538 |
| 43 | Heapy | $40,174,754 |
| 44 | Osborn Engineering | $39,300,000 |
| 45 | Mazzetti | $37,200,000 |
| 46 | Dunham Associates | $36,140,000 |
| 47 | Teecom | $35,937,725 |
| 48 | H.F. Lenz | $32,229,434 |
| 49 | KCI Technologies | $31,789,527 |
| 50 | M/E Engineering | $30,500,000 |
| 51 | Henderson Building Solutions | $28,599,818 |
| 52 | Specialized Engineering Solutions | $24,500,750 |
| 53 | CJL Engineering | $24,212,501 |
| 54 | Parametrix | $23,586,860 |
| 55 | Swanson Rink | $23,484,551 |
| 56 | TW Constructors | $22,740,000 |
| 57 | Bennett & Pless | $22,667,389 |
| 58 | French & Parrello Associates | $22,656,699 |
| 59 | Karpinski Engineering | $21,330,050 |
| 60 | Bridgers & Paxton Consulting Engineers | $19,965,791 |
| 61 | Kohrs Lonnemann Heil Engineers (KLH) | $19,307,020 |
| 62 | PCS Structural Solutions | $18,919,354 |
| 63 | JQ Engineering | $17,271,907 |
| 64 | Schaefer | $16,643,533 |
| 65 | PBS Engineers | $16,284,300 |
| 66 | raSmith | $14,078,671 |
| 67 | FEA Consulting Engineers | $12,773,986 |
| 68 | Kohler Ronan | $12,572,211 |
| 69 | OLA Consulting Engineers | $10,998,653 |
| 70 | DH Engineering | $10,422,895 |
| 71 | BG Buildingworks | $9,935,300 |
| 72 | KCL Engineering | $9,509,431 |
| 73 | SSC Engineering | $8,799,000 |
| 74 | Paradigm Structural Engineers | $8,412,698 |
| 75 | Wick Fisher White | $7,862,268 |
| 76 | JP Harvey Engineering Solutions | $3,083,442 |
Source: 2023 Giants 400 Report
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