Locations

Hillmann Consulting, LLC is headquartered in Union, New Jersey with 9 additional locations strategically situated throughout the United States, affording us the opportunity to provide Environmental & Engineering Consulting services nationwide.

Corporate Headquarters NJ

1600 Route 22 East
Suite #107
Union, NJ 07083
Phone: 908.688.7800
Fax: 908.686.2636

Engineering Division

25 First Avenue
Suite #310
Atlantic Highlands, NJ 07716
Phone: 732.291.7900
Fax: 732.291.3433

Pennsylvania

288 Skinner Hollow Road
Westfield, PA 16950
Phone: 814.367.5162
Fax: 814.367.2819

609 Grant Street
Heidelberg, PA 15106
Phone: 412.429.1005
Fax: 412.429.1821

New York

1407 Route 9
Building #1
Clifton Park, NY 12065
Phone: 518.348.2040
Fax: 518.348.2048

Midwest Regional Office

Three National Plaza
70 West Madison
Chicago, IL 60603
Phone: 800.232.4326

Massachusetts

27 Mica Lane
Suite #204
Wellesley, MA 02481
Phone: 781.431.7779
Fax: 781.431.7877

Metropolitan Washington DC Area

6121 Lincolnia Road
Suite #300
Alexandria, VA 22312
Phone: 703.914.1135
Fax: 703.914.1175

California

1745 W. Orangewood Avenue
Suite #110
Orange, CA 92868
Phone: 714.634.9500
Fax: 714.634.9507

North Carolina

14932 New Light Road
Wake Forest, NC 27587
Phone: 919.529.4486

Florida

2610 Durant Road
Tampa, FL 35596
Phone: 813.838.0059
Fax: 813.326.1329

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Locations