Land use change: Proportion of new dwellings on previously developed land and density of new dwellings. Data is for four years combined for reliability. Regional data is available for single years on Communities and Local Government website. The data in the table above are based on records received from Ordnance Survey up to March 2010. The table is therefore consistent with the Statistical Release published on 30th July 2010. There is a time-lag between land use change occurring and it being recorded, because some changes can take a few years to be recorded, therefore data are constantly being updated. See more on the DCLG website.
Ministry of Housing, Communities & Local Government