General Projects with Henderson Park have appointed ISG for the £50 million Metropolis office development in Marylebone.

The mixed-use scheme will increase the building’s gross area by circa 100,000 sq ft to over 236,000 sq ft, offering 172,000 sq ft. of lettable space and increasing floor areas by over 40%.

It includes the complete refurbishment of the existing eight-storey Woolforth House office building at 242 Marylebone Road.

Metropolis will benefit from both office and retail facilities, with external green roof terraces across every floor. An events auditorium, rooftop-bar, on-site coffee shop, cyclist zone as well as new health and wellbeing amenities complete the specification.

Jim Knowlton, ISG project director, commented: “Originally constructed in the 1950’s, Woolworth House is an exemplar of how a low carbon approach can transform our cities’ dated building stock. Underpinned by environmental, social and governance (ESG) considerations, the scheme shows how adapting assets into smarter office and retail environments, with more green spaces for occupants, can future proof London’s commercial property market.

“Following the successful completion of 66 Shoe Lane in 2020, Woolworth House is our second collaboration with Henderson Park. The project builds upon the success, expertise and shared learnings of the same delivery team, now applied to this trailblazing low carbon scheme.”