The industry is still working through odd patches between the recession and what appears to be the early stages of recovery. As many firms search for clarity about markets and trends, ENR has re-engineered a new approach to the findings of the ENR Top 500 Design Firms survey. Look for new infographics with data and viewpoints from the nation’s largest design firms, presented in easy-to-read formats created to provide readers with fresh insights.
The Top 500 Design Firms list, published annually in April, ranks the 500 largest U.S.-based designs firms, both publicly and privately held, based on design-specific revenue.
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More detailed information on the Top 500 Design Firms: Current Top 500 Design Firms Story: Click below for earlier editions: |
| RANK | FIRM NAME & LOCATION | INT |
|
|---|---|---|---|
| 2011 | 2010 | ||
| 101 | 161 | Day & Zimmermann, Philadelphia, Pa.† | EC |
| 102 | 143 | H.W. Lochner Inc., Chicago, Ill.† | AE |
| 103 | 112 | Willbros Group Inc., Houston, Texas† | EC |
| 104 | 89 | RBF Consulting, Irvine, Calif.† | EPL |
| 105 | ** | Morrison Hershfield, Atlanta, Ga. | E |
| 106 | 118 | Gulf Interstate Engineering Co., Houston, Texas† | EA |
| 107 | 86 | Populous, Kansas City, Mo.† | A |
| 108 | 113 | Woodard & Curran, Portland, Maine | E |
| 109 | 116 | ECS, Chantilly, Va.† | E |
| 110 | 122 | O’Brien & Gere, Syracuse, N.Y.† | E |
| 111 | 105 | KlingStubbins, Philadelphia, Pa. | AEP |
| 112 | 101 | Halcrow Inc., New York, N.Y. | E |
| 113 | 94 | KPFF Consulting Engineers, Seattle, Wash.† | E |
| 114 | 117 | Langan Eng’g and Environmental Services Inc., Elmwood Park, N.J. | E |
| 115 | 111 | Syska Hennessy Group, New York, N.Y.† | E |
| 116 | 136 | Volkert Inc., Mobile, Ala. | E |
| 117 | 108 | Thornton Tomasetti Inc., New York, N.Y. | EA |
| 118 | 114 | DLZ Corp., Columbus, Ohio† | EA |
| 119 | 125 | GZA GeoEnvironmental Inc., Norwood, Mass.† | EC |
| 120 | 90 | Callison, Seattle, Wash. | A |
| 121 | 121 | Kennedy/Jenks Consultants, San Francisco, Calif.† | EA |
| 122 | 120 | Wiss, Janney, Elstner Associates Inc., Northbrook, Ill. | EA |
| 123 | 131 | Affiliated Engineers Inc., Madison, Wis. | E |
| 124 | ** | Versar Inc., Springfield, Va.† | E |
| 125 | 133 | HMC Architects, Ontario, Calif. | A |
| 126 | 144 | Ghafari Associates LLC, Dearborn, Mich.† | EA |
| 127 | 91 | Gresham, Smith and Partners, Nashville, Tenn. | AE |
| 128 | 127 | Whitman, Requardt & Associates LLP, Baltimore, Md. | EA |
| 129 | 145 | Ambitech Engineering Corp., Downers Grove, Ill. | E |
| 130 | 134 | Simpson Gumpertz & Heger Inc., Waltham, Mass. | E |
| 131 | 124 | Short Elliott Hendrickson Inc., Minneapolis, Minn. | EA |
| 132 | ** | Ingenium International Inc., Detroit, Mich.† | AE |
| 133 | 123 | PageSoutherlandPage, Houston, Texas | AE |
| 134 | 103 | Foth Cos., Green Bay, Wis.† | EC |
| 135 | 167 | GAI Consultants Inc., Homestead, Pa. | E |
| 136 | 104 | Burgess & Niple Inc., Columbus, Ohio | EA |
| 137 | 148 | C&S Cos., Syracuse, N.Y. | EA |
| 138 | 132 | Corgan Associates Inc., Dallas, Texas | A |
| 139 | 139 | Freese and Nichols Inc., Fort Worth, Texas | EA |
| 140 | 150 | Greeley and Hansen LLC, Chicago, Ill.† | E |
| 141 | 160 | EA Engineering Science and Tech. Inc., Hunt Valley, Md.† | ENV |
| 142 | 128 | Psomas, Los Angeles, Calif.† | E |
| 143 | 129 | Parametrix, Auburn, Wash. | E |
| 144 | 156 | GEI Consultants Inc., Woburn, Mass. | E |
| 145 | 126 | Greenhorne & O’Mara, Laurel, Md. | E |
| 146 | 153 | Smith Seckman Reid Inc., Nashville, Tenn.† | E |
| 147 | 142 | Huitt-Zollars Inc., Dallas, Texas | EA |
| 148 | 141 | Haley & Aldrich Inc., Burlington, Mass.† | E |
| 149 | 177 | Willdan, Anaheim, Calif.† | E |
| 150 | 135 | R.W. Armstrong & Associates Inc., Indianapolis, Ind. | EA |
| 151 | 140 | TransCore, Hummelstown, Pa. | EC |
| 152 | 100 | Fentress Architects, Denver, Colo. | A |
| 153 | 152 | Halff Associates Inc., Richardson, Texas | EA |
| 154 | 165 | CRB, Kansas City, Mo.† | EA |
| 155 | 154 | Olsson Associates, Lincoln, Neb. | E |
| 156 | 166 | EYP Architecture & Engineering, Albany, N.Y.† | AE |
| 157 | 147 | Clark-Nexsen PC, Norfolk, Va. | AE |
| 158 | ** | Nolte Vertical 5 (NV5), Hollywood, Fla.† | E |
| 159 | 172 | Weidlinger Associates Inc., New York, N.Y.† | E |
| 160 | 224 | Alfred Benesch & Co., Chicago, Ill. | E |
| 161 | 158 | EwingCole, Philadelphia, Pa. | AE |
| 162 | 192 | Weston & Sampson Inc., Peabody, Mass.† | E |
| 163 | 162 | WHPacific Inc., Anchorage, Alaska† | EA |
| 164 | 164 | McCormick Taylor Inc., Philadelphia, Pa. | E |
| 165 | 191 | SWCA Environmental Consultants, Phoenix, Ariz. | ENV |
| 166 | 181 | TMAD TAYLOR & GAINES, Pasadena, Calif.† | E |
| 167 | 159 | Wilson & Co. Inc., Engineers & Architects, Albuquerque, N.M. | EA |
| 168 | 190 | Birdsall Services Group, Sea Girt, N.J.† | E |
| 169 | 174 | Hanson Professional Services Inc., Springfield, Ill.† | AE |
| 170 | 176 | Waldemar S. Nelson And Co. Inc., New Orleans, La. | EA |
| 171 | 182 | AKF Group LLC, New York, N.Y.† | E |
| 172 | ** | Apex Cos. LLC, Rockville, Md. | ENV |
| 173 | 163 | Flad Architects, Madison, Wis.† | AE |
| 174 | 171 | Mead & Hunt Inc., Madison, Wis. | EA |
| 175 | 205 | HR Green Inc., Cedar Rapids, Iowa | EA |
| 176 | 232 | Belt Collins, Honolulu, Hawaii | L |
| 177 | 186 | Shannon & Wilson Inc., Seattle, Wash. | E |
| 178 | 185 | Henderson Engineers Inc., Lenexa, Kan.† | E |
| 179 | 168 | SHW Group, Plano, Texas | AE |
| 180 | 200 | American Structurepoint Inc., Indianapolis, Ind. | EA |
| 181 | 151 | PBK Architects, Houston, Texas | A |
| 182 | 179 | Otak Inc., Lake Oswego, Ore.† | EA |
| 183 | 256 | WATG, Irvine, Calif. | A |
| 184 | 180 | Vanderweil Engineers, Boston, Mass.† | E |
| 185 | 178 | The Burke Group, Rosemont, Ill.† | E |
| 186 | 183 | Strand Associates Inc., Madison, Wis. | E |
| 187 | 194 | Ninyo & Moore, San Diego, Calif. | GE |
| 188 | 216 | HAKS Engineers, Architects and Land Surveyors, New York, N.Y. | E |
| 189 | 212 | Bergmann Associates Inc., Rochester, N.Y. | EA |
| 190 | 184 | Schnabel Engineering Inc., Glen Allen, Va.† | GE |
| 191 | 204 | Patrick Engineering Inc., Lisle, Ill.† | E |
| 192 | 213 | Civil & Environmental Consultants Inc., Pittsburgh, Pa. | E |
| 193 | ** | USS Cal Builders Inc., Stanton, Calif. | EC |
| 194 | 193 | DOWL HKM, Anchorage, Alaska | E |
| 195 | 188 | Heery International Inc., Atlanta, Ga.† | AEC |
| 196 | 170 | Kaplan McLaughlin Diaz (KMD), San Francisco, Calif.† | A |
| 197 | 196 | Walter P Moore, Houston, Texas | E |
| 198 | 175 | ASRC Energy Services, Anchorage, Alaska† | EC |
| 199 | 199 | Parkhill, Smith & Cooper Inc., Lubbock, Texas | EA |
| 200 | 220 | FKP Architects Inc., Houston, Texas† | A |
ENR Top Lists or selections from the directory databases are available on pressure-sensitive labels or computer printouts. Included are the principal officer's name and title, company name and address, and phone and fax numbers. Click here for information on purchasing mailing lists.




