The District Valuation survey, sometimes called the Domesday survey, was carried out between 1910-1915 across England and Wales. The survey was overseen by the Valuation Office as result of the Finance Act 1910, which provided for the levy and collection of a duty across the whole country.
Oxfordshire History Centre holds District Valuation records for the whole of the historic county of Oxfordshire. For similar records covering the Vale of White Horse area you will need to contact Berkshire Record Office.
There are three types of District Valuation record available here: the valuation books, working copies of the maps and if you are in Oxfordshire History Centre or an OCC library, the provisional valuation forms (Forms 37-Land).
These documents work together. The maps show the boundaries of the different parcels of land, each marked with a plot number. The valuation books are arranged by plot number and provide details of the owner and occupier in 1909-1910 (although this is sometimes overwritten with later information) and where filled in, the valuation. The provisional valuation forms provide the owner, occupier, valuation and date of valuation. The valuations were carried out between 1910-1915.
These records are an excellent source for people researching the history of their house or other properties and can be used with the 1911 census as well as earlier ordnance survey maps to build up an overall picture.
The National Archives holds a second set of maps made after the valuation was completed, field books containing additional information on individual properties and other related records. See their guide for more information.