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HomeProjects41-42 Welbeck Street, London W1

41-42 Welbeck Street, London W1

This project involved the design and build of an 11,000 ft2 six storey office development in the heart of the Howard de Walden Estate in Marylebone.

The Edwardian front façade is retained whilst all structures behind it were demolished. Internal flying shores were bridged between the adjacent party walls and tied in the front façade which provided lateral stability. Other flying shores spanned between the party walls at each floor level and roof level ensuring stability to the adjacent occupied properties.

The existing chimneys, above roof level, were also retained whilst the existing chimneys were demolished. This required support from intricate temporary works involving vertical steel posts being chemfixed to the existing party wall.

Upper floors comprised of metal deck with in-situ concrete. The rear elevation consisted of London yellow stock brickwork to match the existing buildings finished with a green roof at the rear of the building at second floor level.

The internal office space is fitted out to category A standard by being fully air conditioned with suspended ceilings and raised access floors.

As with all central London projects, we had to carefully plan our logistics on an extremely restricted site, intensive community relations and liaising with Westminster County Council.

Additional information can be found here:


Facts and figures

  • Client:
    The Howard de Walden Estate
  • Value:
  • Duration:
    63 weeks
  • Architect:
    Floyd Slaski Partnership
  • Project manager:
    Jones Lang LaSalle
  • Quantity surveyor:
    IDC Consult
  • Engineer:
    Richard Watkins & Associates
  • Mechanical and electrical:
    RHB Partnership
  • Project categories

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