December 2017
The ENR Top Specialty Contractors list contains the rankings by previous year's revenue of the largest specialty contractors.

More detailed information on the Top Specialty Contractors:
ENR Mountain States Top Specialty Contractors Main Rankings
Related Article:
Regional Trade Firms Embrace Health of Most Market Sectors
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | STURGEON ELECTRIC CO. INC. | 261.72 |
| 2 | RK* | 202.75 |
| 3 | U.S. ENGINEERING CO.* | 130.40 |
| 4 | MTECH MECHANICAL | 120.53 |
| 5 | EMCOR GROUP INC. | 117.89 |
| 6 | ENCORE ELECTRIC INC.* | 110.10 |
| 7 | MURPHY CO. MECHANICAL CONTRACTORS & ENGINEERS* | 101.12 |
| 8 | DOUGLASS COLONY GROUP | 72.15 |
| 9 | FIORE & SONS INC.* | 72.00 |
| 10 | COMFORT SYSTEMS USA* | 61.70 |
| 11 | WEIFIELD GROUP CONTRACTING | 59.25 |
| 12 | APOLLO MECHANICAL CONTRACTORS | 40.89 |
| 13 | MASTEC INC. | 38.00 |
| 14 | SPACECON SPECIALTY CONTRACTORS LLC | 37.56 |
| 15 | EARTH SERVICES & ABATEMENT INC. | 28.50 |
| 16 | SUNTEC CONCRETE INC. | 18.99 |
| 17 | ISEC INC.* | 18.56 |
| 18 | COLORADO CLEANUP CORP.* | 18.00 |
| 19 | ICI LLC | 17.54 |
| 20 | KHS&S CONTRACTORS | 14.88 |
| 21 | POWER DESIGN INC. | 13.16 |
| 22 | SCHULTZ INDUSTRIES INC.* | 12.89 |
| 23 | HEARTLAND ACOUSTICS & INTERIORS* | 9.80 |
| 24 | UNIVERSAL PLANT SERVICES INC. | 1.87 |
| 25 | SURE STEEL INC. | 1.46 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | CACHE VALLEY ELECTRIC CO. | 220.78 |
| 2 | EMCOR GROUP INC. | 136.17 |
| 3 | TAYLOR ELECTRIC INC. | 62.90 |
| 4 | SME STEEL CONTRACTORS INC. | 55.73 |
| 5 | GSL ELECTRIC* | 29.41 |
| 6 | IMS MASONRY INC. | 19.67 |
| 7 | CR LIGHTING & ELECTRIC INC. | 18.08 |
| 8 | COMFORT SYSTEMS USA* | 17.67 |
| 9 | SURE STEEL INC. | 13.66 |
| 10 | STURGEON ELECTRIC CO. INC. | 12.65 |
| 11 | TERRA MILLENNIUM CORP.* | 8.82 |
| 12 | SUNTEC CONCRETE INC. | 2.41 |
| 13 | ISEC INC.* | 2.38 |
| 14 | FAITH TECHNOLOGIES INC. | 2.14 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | ISEC INC.* | 25.60 |
| 2 | KHS&S CONTRACTORS | 7.17 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | SUNTEC CONCRETE INC. | 21.41 |
| 2 | BLACK EAGLE CONSTRUCTION LLC | 3.66 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | FIORE & SONS INC.* | 58.63 |
| 2 | COLORADO CLEANUP CORP.* | 11.00 |
| 3 | MASTEC INC. | 8.00 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | ICI LLC | 17.54 |
| 2 | HEARTLAND ACOUSTICS & INTERIORS* | 9.80 |
| 3 | SPACECON SPECIALTY CONTRACTORS LLC | 9.39 |
| 4 | KHS&S CONTRACTORS | 5.60 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | STURGEON ELECTRIC CO. INC. | 277.06 |
| 2 | CACHE VALLEY ELECTRIC CO. | 228.83 |
| 3 | EMCOR GROUP INC. | 189.51 |
| 4 | ENCORE ELECTRIC INC.* | 144.00 |
| 5 | TAYLOR ELECTRIC INC. | 62.90 |
| 6 | WEIFIELD GROUP CONTRACTING | 59.25 |
| 7 | GSL ELECTRIC* | 33.19 |
| 8 | CR LIGHTING & ELECTRIC INC. | 18.08 |
| 9 | MASTEC INC. | 16.00 |
| 10 | POWER DESIGN INC. | 13.16 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | RK* | 180.89 |
| 2 | U.S. ENGINEERING CO.* | 140.80 |
| 3 | MTECH MECHANICAL | 75.53 |
| 4 | COMFORT SYSTEMS USA* | 68.26 |
| 5 | EMCOR GROUP INC. | 64.55 |
| 6 | MURPHY CO. MECHANICAL CONTRACTORS & ENGINEERS* | 51.73 |
| 7 | TERRA MILLENNIUM CORP.* | 51.24 |
| 8 | APOLLO MECHANICAL CONTRACTORS | 48.36 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | COLORADO CLEANUP CORP.* | 7.00 |
| 2 | FIORE & SONS INC.* | 2.78 |
| 3 | SUPERIOR DEMOLITION INC. | 1.43 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | SME STEEL CONTRACTORS INC. | 55.73 |
| 2 | MURPHY CO. MECHANICAL CONTRACTORS & ENGINEERS* | 31.04 |
| 3 | RK* | 23.69 |
| 4 | SURE STEEL INC. | 22.61 |
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