CTBUH Silver Member

Gilsanz Murray Steficek


Member Since: 2013

Member Offices: New York City

Gilsanz Murray Steficek provides structural engineering and building envelope consulting for a diverse range of construction and restoration projects. These include tall office and residential towers, theaters, housing, educational buildings, sports facilities, sculptures, landmarks and special structures.

The firm’s leaders involve themselves in professional activities and publish technical papers relevant to structural design. They are dedicated to building their future reputation on the firm’s exceptional service to clients and their projects – big and small.

Their clients include architects, public and non-public institutions, building owners, developers, contractors, building managers, corporations, artists and engineers in other trades. Their staff has experience with innovative use of materials, composite construction, and construction technology.

Fields of Expertise

Engineering, Other; Security Consultancy; Structural Engineering

Membership details

Membership Level


Member Since


Member Offices

  • New York City




Architecturally Topped Out

Structurally Topped Out

Under Construction

On Hold

Never Completed




Competition Entry


Proposed Renovation

Under Renovation


Under Demolition



Empire State Building

381 m / 1,250 ft


35 Hudson Yards

307.8 m / 1,010 ft


Torre Cepsa

248.3 m / 815 ft


Woolworth Building

241.4 m / 792 ft


1540 Broadway

223.3 m / 733 ft


252 East 57th Street

217.9 m / 715 ft


Grace Plaza

192 m / 630 ft


11 Hoyt Street

190.8 m / 626 ft


300 Madison Avenue

175.3 m / 575 ft


330 Madison Avenue

169.2 m / 555 ft


35 Hudson Yards

Award of Excellence: 35 Hudson Yards

Best Tall Mixed-Use Building 2021

Ctbuh Leaders

Gary Steficek

Gary Steficek

CTBUH Awards Renovation Jury, 2019

New York City

Achim Hermes

Achim Hermes

CTBUH Annual Conference, Presenter, 2018

New York City

Joseph Basel

Joseph Basel

CTBUH Innovation Conference, Speaker, 2019

New York City

Building Completions Timeline



22 October 2015

Reinventing Woolworth: Adaptive Reuse of a Historic Skyscraper

This article presents a case study of structural and logistical issues involved in the adaptive reuse of an early 20th-century skyscraper, and outlines the case...

Global News

07 June 2019

Scalloped Condominium Tower Tops Out in Brooklyn, New York City

The Studio Gang-designed 11 Hoyt has topped out in Brooklyn to its full height of 626 feet (191 meters), offering 481 luxury residential condominiums, with...

Global News

19 April 2019

New Legislation Limits Greenhouse Gas Emissions from Buildings in New York City

New York City is about to embark on an ambitious plan to fight climate change that would force thousands of large buildings, like the Empire...


150 m+ Buildings

300 m+ Buildings

Average Building Age*

30 Years

Most Common Function*

Office, 14 Buildings

Most Common Material*

Concrete, 12 Buildings

* Based on 150 m+ buildings currently in the database.


*Based on 29 Completed & Under Construction Buildings

Building Completions Timeline


Construction Time Chart

NOTE: Construction start time is not available for all buildings. The average construction time is only displayed if there is three or more buildings with construction start and complete data in that year.


Gross-to-Net Height

NOTE: Gross-to-Net Height is defined as architectural height minus height of highest occupied floor. Therefore, the Gross-to-Net Height is only calculated for buildings that have both the architectural height and the highest occupied floor height recorded.