Project 1947
Metropolis
Contemporary workplace refurbishment of Richard Seifert’s Woolworths building at 242 Marylebone Road, increasing the floor area by about 50%.
Location
City of Westminster
Client
Henderson Park, General Projects
Architect
Allford Hall Monaghan Morris
Status
On site
GIA
16,258m²
Feature
Key features
Rear terraced extension
The refurbishment fills in the former car park space with a terraced ‘wedding cake’ style extension, adding floors to the rear block.
Working with existing floor-to-ceiling heights
Tight head heights in the existing building necessitated a thin structural zone to the extension, utilising shallow steel beams and CLT slabs to their maximum.
Reducing weight on the existing foundations
Reducing weight on existing foundations, through demolition of loadbearing masonry courtyard wall and lightweight timber slabs.
Relocating plant to enable floor space
A new basement plant room is constructed below the rear lateral extension, freeing up roof area for further high-quality office space.
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