1 Undershaft

Note: As this project is proposed, the data is based on the most reliable information currently available. Additionally, in response to the COVID-19 global health pandemic, construction work may temporarily slow or suspend under restrictions imposed by local or national authorities. This data is thus subject to change until the building has completed and all information can be confirmed and ratified by the CTBUH.

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Height: Architectural 290 m / 951 ft
Height: Occupied 281.5 m / 924 ft
Height: To Tip 290 m / 951 ft
Floors Above Ground 73
Floors Below Ground 4
# of Elevators 17
Top Elevator Speed 7 m/s
Tower GFA 154,100 m² / 1,658,719 ft²


Official Name 1 Undershaft
Other Names The Shaft, No. 1 Undershaft; Trellis
Structure Type Building
Status Proposed
Country United Kingdom
City London
Street Address & Map 1 Undershaft
Postal Code EC3P 3DQ
Building Function office
Structural Material steel
Proposed 2014

Companies Involved

Owner/Developer Aroland Holdings
Design Eric Parry Architects
Structural Engineer
Design WSP Group
MEP Engineer
Design WSP Group
Other Consultant
• Marketing D-BOX
• Planning DP9 Ltd
• Vertical Transportation Arup

CTBUH Initiatives

CTBUH UK Chapter Hosts: Geometry of Tall Buildings
29 Jan 2018 – Event Report


"Geometry of Tall Buildings" - a CTBUH United Kingdom Chapter Event
29 Jan 2018 – Patrik Schumacher, Zaha Hadid Architects; Anil Hira, BuroHappold Engineering; Kai-Uwe Bergman, Bjarke Ingels Group, [i]et al.[/i]

CTBUH Video Interview – Eric Parry
17 Oct 2016 – Eric Parry, Eric Parry Architects

Research Papers

1 Undershaft – The City of London’s New Skyscraper Where the Public Comes First
17 Oct 2016 – Cities to Megacities: Shaping Dense Vertical Urbanism

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