September 2012: Recent parliamentary question in the House of Commons provides a useful summary on where London housing statistics are kept and collated.
Statistics on new housing starts and completions in each local authority in London, taken from the National Statistics on House Building, are published in live table 253 on the Department for Communities and Local Government’s website which is available on the following link.
These statistics show starts and completions split by tenure according to whether the organisation responsible for the development is a private company, a housing association or a local authority. The figures for housing associations and local authorities can together be used as a proxy for affordable housing starts and completions. However, these figures may underestimate affordable housing supply and overestimate private housing, as they are from building control records in which the ultimate tenure may be difficult to identify.
Statistics on the full extent of affordable housing supply by local authority are published in the Department’s live tables 1006, 1007 and 1008, which are available at the following link.
From 1 April 2012, the Mayor of London has had oversight of strategic housing, regeneration and economic development in London.