The Top Design Firms list, published annually, ranks the largest U.S.-based designs firms, both publicly and privately held, based on design-specific revenue.

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ENR New York Top Specialty Contractors - Ranking by Sectors 2013

New York

Rank	Firm	($ Mil)
1	GreenStar Services Corp.	821.84
2	EMCOR Group Inc.	486.86
3	E-J Electric Installation Co.	251.64
4	Unity International Group	131.20
5	O’Connell Electric Co. Inc.	118.37
6	Comfort Systems USA Inc.	105.97
7	MasTec Inc.	100.00
8	Roger & Sons Concrete Inc.	89.50
9	KSW Mechanical Services Inc.	88.74
10	W&W Glass LLC	88.00
11	Matco Electric	78.85
12	Ruttura & Sons Construction Co. Inc.	75.00
12	Universal Builders Supply Inc.	75.00
14	PAL Environmental Services	73.00
15	Enclos	62.00
16	Northeast Remsco Construction Inc.	58.06
17	Durr Mechanical Construction Inc.	53.44
18	Port Morris Tile & Marble Corp.	52.90
19	Consolidated Carpet	52.39
20	ERSI	33.20

New Jersey

Rank	Firm	$Mil
1	EMCOR Group Inc.	106.03
2	MasTec Inc.	85.00
3	Binsky & Snyder LLC	74.00
4	Unity International Group	64.50
5	Northeast Remsco Construction Inc.	45.87
6	Clean Earth Inc.	40.30
7	Bonland Industries Inc.	38.41
8	MMC Contractors Inc.	37.37
9	Durr Mechanical Construction Inc.	34.12
10	E-J Electric Installation Co.	28.00
11	BAMCO inc.	24.00
12	Petillo Inc.	22.25
13	Case Foundation Co.	19.18
14	KHS&S Contractors	14.07
15	Tecta America Corp.	14.05
16	Allied Fire and Safety Equipment Co. Inc.	6.23
17	L.M. Sessler Excavating & Wrecking Inc.	5.90
18	Team Industrial Services Inc.	4.40
19	Consolidated Carpet	3.60
20	Coastal Environmental Group Inc.	3.47

Connecticut

Rank	Firm	$Mil
1	EMCOR Group Inc.	101.26
2	E-J Electric Installation Co.	26.00
3	Tecta America Corp.	22.89
4	MasTec Inc.	15.00
5	All State Construction Inc.	14.42
6	Durr Mechanical Construction Inc.	10.85
7	ComNet Communications	8.59
8	Northeast Remsco Construction Inc.	6.07
9	Team Industrial Services Inc.	3.29
10	Clean Earth Inc.	2.99

Asbestos/Lead Abatement

Rank	Firm	$Mil
1	PAL Environmental Services	70.00
2	ERSI	12.00
3	Tower Maintenance Corp.	1.89
4	EverGreene Architectural Arts Inc.	1.00
5	Evans Roofing Co. Inc.	0.45

Concrete

Rank	Firm	$Mil
1	Roger & Sons Concrete Inc.	89.50
2	GreenStar Services Corp.	15.30
3	Petillo Inc.	6.50

Demolition/Wrecking

Rank	Firm	$Mil
1	ERSI	21.20
2	L.M. Sessler Excavating & Wrecking Inc.	12.91

Electrical

Rank	Firm	$Mil
1	GreenStar Services Corp.	562.56
2	E-J Electric Installation Co.	305.64
3	EMCOR Group Inc.	293.96
4	Unity International Group	174.10
5	O'Connell Electric Co. Inc.	118.37
6	Matco Electric	78.85
7	MasTec Inc.	25.00
8	Perreca Electric Co. Inc.	18.82
9	Kasselman Electric Co. Inc.	13.31
10	Meco Electric Co. Inc.	9.01

Glazing/Curtain Wall

Rank	Firm	$Mil
1	W&W Glass LLC	90.00
2	Enclos	62.00
3	Coordinated Metals Inc.	18.82
4	GreenStar Services Corp.	11.81
5	Lafayette Glass Co. Inc.	5.00

Interior Finishes/Millwork

Rank	Firm	$Mil
1	Consolidated Carpet	55.99
2	GreenStar Services Corp.	7.31
3	EverGreene Architectural Arts Inc.	1.00

Masonry

Rank	Firm	$Mil
1	GreenStar Services Corp.	8.43
2	Port Morris Tile & Marble Corp.	7.50
3	EverGreene Architectural Arts Inc.	0.50

Mechanical

Rank	Firm	$Mil
1	EMCOR Group Inc.	400.18
2	Comfort Systems USA Inc.	105.97
3	Durr Mechanical Construction Inc.	98.41
4	KSW Mechanical Services Inc.	88.74
5	GreenStar Services Corp.	79.75
6	Binsky & Snyder LLC	62.00
7	All State Construction Inc.	22.64
8	MMC Contractors Inc.	17.56

Painting & Coatings

Rank	Firm	$Mil
1	Tower Maintenance Corp.	4.17
2	EverGreene Architectural Arts Inc.	2.52

Plastering/Drywall

Rank	Firm	$Mil
1	GreenStar Services Corp.	19.19
2	Donaldson Traditional Interiors	14.31
3	EverGreene Architectural Arts Inc.	11.00

Plumbing

Rank	Firm	$Mil
1	GreenStar Services Corp.	71.61
2	MMC Contractors Inc.	16.07
3	Binsky & Snyder LLC	12.00

Roofing

Rank	Firm	$Mil
1	Tecta America Corp.	47.82
2	Evans Roofing Co. Inc.	13.50
3	GreenStar Services Corp.	2.22

Sheet Metal

Rank	Firm	$Mil
1	Bonland Industries Inc.	49.95
2	GreenStar Services Corp.	11.21
3	MMC Contractors Inc.	3.74
4	Evans Roofing Co. Inc.	2.50

SiteWork/Excavation/Foundation

Rank	Firm	$Mil
1	Ruttura & Sons Construction Co. Inc.	75.00
2	Case Foundation Co.	23.22
3	Petillo Inc.	15.75
4	GreenStar Services Corp.	13.92
5	MasTec Inc.	5.00

Steel Erection/Fabrication

Rank	Firm	$Mil
1	GreenStar Services Corp.	14.75
2	Strand Consulting Corp.	0.17

Thermal & Moisture Protection

Rank	Firm	$Mil
1	GreenStar Services Corp.	0.45

Utility

Rank	Firm	$Mil
1	MasTec Inc.	75.00
2	Northeast Remsco Construction Inc.	72.70
3	All State Construction Inc.	0.61

Wall/Ceiling

Rank	Firm	$Mil
1	BAMCO inc.	27.00
2	KHS&S Contractors	20.92
3	Ronsco Inc.	6.63
4	Evans Roofing Co. Inc.	1.75