His practice, Make, has submitted plans for 19 apartments and penthouses at 10 Weymouth Street in the heart of Marylebone.
The scheme has been drawn up for developer Ridgeford Properties, which owns both this corner plot and the neighbouring ARB offices.
Interestingly, the 2,000m 2development will also overlook the restaurant terrace at the rear of the RIBA's headquarters in Portland Place.
Clad in brass and featuring unusual glass bay 'pods', the plans include building a new sixth floor on the existing building at 8 Weymouth Street and creating a ground-floor office extension towards Bridford Mews.
Chris Murray, Ridgeford's managing director, said: 'Marylebone has undergone huge change over the past five years, and we believe there is still a way to go. By extending and enhancing the current building, we will unlock the site's true potential, providing generous-size, high-specification apartments while meeting the latest environmental and sustainable criteria for the benefit of all.'
The scheme is expected to start on site in October next year with completion scheduled for March 2009.