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1947 - Metropolis

City of Westminster

Refurbishment and extension of an existing Richard Seifert Building, originally the HQ for Woolworths next to the Landmark Hotel on Marylebone Road.

Key Features:

  • Proposal increase the existing floor area by ~50%.
  • The project extends into the existing car park with a terraced ‘wedding cake’ extension and add stories to the rear blocks.
  • Tight head heights in the existing building has required a thin structural zone to the extension, utilising new RC flat slabs to their maximum.
  • Reducing weight on exiting foundations and keeping a large column grid drives a steel framed to the additional stories, with lightweight cross laminated slabs between.
  • A new basement plant room is planed below the existing car park free-ing up roof area for high quality office space

Client: Henderson Park/ General Projects

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Andy Heyne
Stuart Campbell
Jonathan Flint