About Cosentini


Cosentini Associates is a long-established building systems consulting engineering firm headquartered in New York City. 

Photo Credit: Nigel Young/Foster + Partners

We offer an integrated array of services: mechanical/HVAC, electrical, and plumbing (MEP); fire protection; fire engineering and code consulting; mission-critical design; information technologies (comprising telecommunications, audiovisual, and security design); lighting design; sustainable design and LEED consulting; commissioning; and disaster relief services.


Cosentini Associates leads the industry in the application of future-focused, cost-effective engineering solutions for building systems. Many of those innovations have become building design standards.  


Cosentini endeavors to develop unique solutions for each project which meet client goals and create new building design standards. Our engineers design components from the smallest circuits to the largest cooling systems to work most effectively within whole buildings to assure complete systems integration. 

Core values

Collaborate – We understand our clients’ goals, and collaborate with them and their design teams to accomplish them.
Communicate – We listen to our clients, to each other, and to our partners on each project.
Innovate – We explore, research, and develop all possibilities to get the best results.


Photo Credit: Aitor Ortiz


Founded in 1952 to provide mechanical and electrical engineering services, the original six-person firm led by Marvin Mass has grown to employ more than 300 professionals in New York City and in our offices in Cambridge, MA; Chicago, IL; Houston, TX; Los Angeles, CA; Calgary, Alberta, Canada; Paris, France; and Shanghai, China. In 1999, Cosentini greatly expanded its engineering and design resources by joining Tetra Tech, Inc., a leading provider of consulting and engineering services differentiated by Leading with Science in providing innovative technical solutions to our clients. Tetra Tech supports global commercial and government clients focused on water, environment, infrastructure, resource management, energy, and international development.  With 16,000 associates in 400 offices worldwide, Tetra Tech provides clear solutions to complex problems.

Cosentini’s engineering expertise has inspired architects and owners throughout the world to entrust us with many of the greatest buildings of the 20th and 21st centuries. Our work has ranged from corporate headquarters and campuses, high-rise commercial office buildings, and tenant interiors to libraries, museums, and performing arts centers; from large-scale mixed- use developments, hotels, and residential towers to government buildings, courthouses, and command and control facilities; and from mission-critical facilities to academic institutions, healthcare, and R&D facilities. 



A Long History of Innovation + Sustainability

Cosentini has played a significant role in the commercial realization of innovative technologies, listed below, that have driven the final outcomes in a number of significant built projects. Long a supporter of the U.S. Green Building Council (USGBC), the firm employs more than 75 LEED-accredited professionals, and has a portfolio of 75+ LEED-certified projects.

Innovative technologies:

  • Underfloor Perimeter Chilled Beam: Jane Street Group, New York, NY (2016)
  • First single path underfloor air fan-powered box: The Bow/EnCana Headquarters, Calgary, Alberta, Canada (2013)
  • First environmental chilled water underfloor air tower: 200 West Street (financial headquarters), New York, NY (2010)
  • VAV residential water-cooled unit: Songdo IBD, Korea (2009)
  • Water-source heat pump with hydronic heating coil: Tribeca Green, New York, NY (2005)
  • Air Floor - Convective/radiant coffer cooling/heating: 111 South Wacker Lobby (2004)
  • Green residential high-rise: The Solaire, Battery Park City,  New York, NY (2003)
  • Integrated underfloor air column: Woodfield Preserves, Schaumburg, IL (2000)
  • Green commercial high-rise office building: Four Times Square, New York, NY (1998)
  • Major underfloor air project: Owens Corning World Headquarters, Toledo, OH (1997)
  • Naturally ventilated pavilion: Saint Enoch’s Square, Glasgow, Scotland, UK (1991)
  • Packaged, floor-by-floor air-conditioning system: 499 Park Avenue, New York, NY (1981)
  • Solar-heated building: the Solar I House, University of Delaware, Dover, DE (1974)
  • Using structural elements to distribute air: Knights of Columbus Building, New Haven, CT (1969)
  • First atrium building: The Ford Foundation, New York, NY (1968)



Cosentini has designed more than 150 award-winning projects. To download our list of awards please click here.

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