BNP Paribas Real Estate has agreed its headquarters move from 90 Chancery Lane to 5 Aldermanbury Square.
The property service firm has signed to take 35,000 sq ft across two floors at the grade-A building in the autumn.
Its move is part of a BNP Paribas Group-wide initiative to base its Investment Solutions business, of which BNP Paribas Real Estate is a part, in one building.
The company will retain its space at 30 Charles II Street for its West End agency and property management teams.
However, employees from its Chancery Lane and Old Broad Street offices will be relocated together.
Mark England, CEO of BNP Paribas Real Estate UK, said: “Our new office space has excellent client entertainment facilities with views across the City, and the large floorplates are essential for our teams to work together.”