Chart House N1 Timeline News and progress updates from Chart House new development in N1 Post a new milestone Helical Has sold Chart House office building for £7.5m to a private purchaser. Finn and Co acted for the buyer. Duncan Walker, Investment Director, Helical, said: "We... 24/01/2017 by Buildington Helical Bar plans to renegotiate the planning consent for Chart House to add an extra floor of office accommodation in place of the planned residential space upon getting... 27/11/2015 by Buildington