Recognized as one of the leading consultancies in structural engineering for historic and old buildings, Old Structures provides reports, drawings, and specifications that give detailed guidance to owners, designers, and contractors, enabling the preservation, restoration, and alteration of landmarked and other older structures. Donald Friedman, Marie Ennis, and Michael Lo, the firm’s principals, are widely acknowledged as experts in this field, known both for the breadth of their experience and for their contributions to advancing the knowledge and practice of this specialty.
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Old Structures Engineering Questions
The Old Structures Engineering annual revenue was $2 million in 2026.
Donald Friedman is the President of Old Structures Engineering.
13 people are employed at Old Structures Engineering.
Old Structures Engineering is based in New York, New York.
The NAICS codes for Old Structures Engineering are [541, 54, 54133, 5413].
The SIC codes for Old Structures Engineering are [871, 87].
Top Old Structures Engineering Employees
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Donald Friedman
President at Old Structures Engineering
New York, NY, US35+ -
Michael Lo
Principal Engineer at Old Structures Engineering
New York, NY, US33 -
Eric Hammarberg
Building Consultant at Old Structures Engineering
New York, NY, US34 -
Marie Ennis
Principal at Old Structures Engineering
New York, NY, US35+ -
Mona Abdelfatah
Principal at Old Structures Engineering
New York, United States33 -
Eleanor Phetteplace
Project Manager at Old Structures Engineering
New York, NY, US2 -
Ashley Farrell
Office Manager at Old Structures Engineering
New York, NY, US32 -
Tim Michiels
Associate at Old Structures Engineering
New York, New York, United States25 -
Kami Wiesner
Engineer at Old Structures Engineering
United States2 -
Melanie McCloy
Engineer at Old Structures Engineering
New York, NY, US2
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