Beacon Capital is reportedly mulling an offer for 33 Grosvenor Place.
According to Property Week, the US financial firm is considering a bid of between £170 million and 180 million for the development, which totals some 192,000 sq ft.
Beacon Capital has declined to comment on developments, but the commercial property news site claims that the Jones Lang LaSalle has already been appointed to advise on the transaction.
News of developments comes amid mounting signs of a sustained recovery in demand in the office sector in the capital.
Last week, Great Portland Estates confirmed it had made two recent major office acquisitions, one of which was a £129 deal for City Tower in Basinghall Street.
This followed Aerium’s announcement that 40 Portman Square is on the market for £185 million.
Should the sale, which is being overseen by CB Richard Ellis, go through it would represent a yield of 5.5 per cent.