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WELCOME TO DEMTEC 

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ABOUT DEMTEC

Professional Service on Demand

DEMTEC is a full-service building demolition contractor operating throughout New York City and the surrounding tri-state area since 2013.

 

We specialize in structural demolition, interior gut demolition, selective demolition, and complex urban takedowns — including projects requiring engineering, permit coordination, utility disconnects, construction fencing, sidewalk sheds, and full DOB compliance.

 

Our team understands NYC. We work within the constraints of dense neighborhoods, tight logistics, active buildings, and strict regulatory oversight. Every project is executed with a focus on safety, planning, documentation, and disciplined field supervision.

 

Whether the scope involves high-rise deconstruction, commercial interior demolition, structural concrete removal, or complete building razing, DEMTEC delivers controlled, methodical execution from pre-construction through final site clearance.

 

We bring the professionalism, systems, and field discipline typically associated with large union contractors — while maintaining the flexibility and responsiveness of a privately operated firm.

 

If you are planning a demolition project in NYC, Long Island, Westchester, Northern New Jersey, Eastern Pennsylvania, or Western Connecticut, contact DEMTEC to discuss scope, logistics, and approach.

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CONTACT

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Contact

516-216-0597

Service Areas

Manhattan

Queens

Bronx

Brooklyn

Nassau

Westchester

New Jersey

Connecticut

Pennsylvania

Massachusetts

+ select long distance projects

©2026 BY COSTELLO CONSTRUCTION GROUP LLC

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