The National Housing Federation (NHF) and G15 have thrown their support behind a new shared ownership staircasing mortgage model being developed by housing association Southern.

The London landlord believes the proposed new product could help boost supply by releasing billions of pounds of capital for development via shared ownership equity sales without inflating prices or leading to a leakage of value of social assets from the sector. Kate Henderson, chief executive of the NHF, last night backed the proposal in a statement to Housing Today.