Notes CAGR: Compound Annual Growth Rate is the year-over-year growth rate of house prices over a specified period of time (in this case five years). This figure gives an indication of the returns that have been seen historically. It can also be seen as a "smoothed" rate of return. MK1 data sources: Total number of properties: ONS 2001 Census data. Other data: HM Land Registry. Land Registry data is updated quarterly and dates back to January 1995. No. of transactions: This is the count of all transactions in the relevant geographic segment since 1st January 1995 as recorded by Land Registry. No. of properties: This is the count of all residential properties in the relevant geographic segment. New homes built: This is the count of all new build transactions in the relevant geographic segment since 1st January 1995 as recorded by Land Registry.