A spokesman for Tishman Speyer confirmed the sales but declined to comment on the financial details.
Investors such as pension and sovereign wealth funds have poured into European commercial real estate, lured by the potential for higher returns compared with bonds. U.S. private equity firms that bet on demand for European offices by modernizing and redeveloping buildings have been beneficiaries of that appetite in the past five years, selling completed projects to institutional investors for huge profits.
Tishman Speyer bought the London property for 170 million pounds in 2012, carried out a redevelopment and secured new tenants. The Frankfurt development, which will be the first tower to include offices and homes in the city, has already secured tenants including Morgan Stanley.