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.

Numbers of dwellings on Valuation List in each council tax band. Data comes from Valuation Office Agency of HMRC. Based on property values at 1 April 1991, homes are allocated to one of eight bands in England: the lowest - band A - is for homes worth less than £40,000, and the highest - band H - is for those worth more than £320,000. Data for smaller geographies (LSOA/MSOA) is available in a separate dataset here. External link

Number of Local Authority dwellings. Figures in this table are unaudited by local authorities. Data before 2003/04 are more prone to errors as they were validated less rigorously. Where a local authority has become a Large Scale Voluntary Transfer (LSVT) authority it's stock would reduce to zero or a small number. The districts, unitary authorities and counties listed above are based on 1 April 1998 boundaries. Values related to any old local authorities which had gone through a boundary change have been redistributed to the relevant new local authority by proportioning based on the number of households falling within the new districts at the time. Data for each year are from the year in which they were reported. For example, 2007/08 data is from HSSA 2007/08 returns. See dwelling stock data on DCLG Website