James J. Hahn Engineering, P.C. is a civil and environmental engineering company specializing in consulting for local municipalities, county government, and private developers for site planning, engineering and construction

James J. Hahn Engineering, P.C. has 10 employees, 4 of whom are New York State Licensed Professional Engineers.  One employee is an Engineer in Training and one is certified NICET Level 3, Highway Construction.

James J. Hahn Engineering, P.C. consults for several municipalities in Westchester and Putnam Counties and specializes in reviewing proposed projects before their respective Planning Boards. 

James J. Hahn Engineering, P.C. has expertise in all aspects of stormwater management and was one of the firms that comprised the engineering watershed planning consortium for the Stormwater Retrofit Plan developed to bring 10 Westchester Towns in the Croton Kensico Watershed Intermunicipal Coalition (CKWIC) Municipalities into compliance with the SPDES phosphorus reduction requirements. Part of that study consisted of investigating over 170 sites in 6 communities.

James J. Hahn Engineering, P.C. completed the design and construction administration of a 2 million gallon a day water filtration plant and a mile and a half 12 inch water transmission main that crosses I-684 and Saw Mill River Parkway and Muscoot Reservoir for the Town of Bedford, NY.

Our experience also includes design of recreation centers, parks, stormwater management facilities, commercial and residential developments including the design of wastewater treatment facilities and water supply treatment plants and water distribution systems for these developments.

Construction oversight is also part of our expertise which ultimately insures that the owner is rewarded with a project as envisioned by the design professional and approved and paid for by the owner.

James J. Hahn Engineering, P.C. has also worked in obtaining permits from the USEPA, NYSDEC, and NYCDEP in the remediation of polluted sites throughout Westchester County and lower New York State.

James J. Hahn Engineering, P.C. was the lead engineer and construction manager in the design and construction of a 100,000 SF quad ice rink facility including lounge and restaurant, and a 10,000 sf health center.  Included in this design was all associated engineering such as drainage, grading, and septic design, approvals and building design and layout.

James J. Hahn Engineering, P.C. takes pride in the quality and care that is incorporated into each and every project and will continue this level of pride and professionalism.

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Established in 1980
1689 Route 22 | Brewster, New York 10509
845 279-2220 | fax 845 279-8909