Question to the HM Treasury:

To ask the Chancellor of the Exchequer, if she will list (a) each of the variables and (b) the source of data for each variable used in the new Automated Valuation Model for the Valuation Office Agency's council tax revaluation in Wales.

The variables used in the AVM model include property attributes, locations, and sales details. While much of this data is sourced from VOA records, the VOA supplement this with data available across Government and through the Public Sector Geospatial Agreement, including from the Office for National Statistics, HM Land Registry and Ordnance Survey.