House price surveys explained
Various surveys record UK house prices on a monthly basis, but they all have slightly different methodology.
The house price index by the Nationwide Building Society is the quickest to be released. It uses an average value for properties after considering components such as location and size. The survey is based on its own mortgage lending which represents about 13% of the market.
A survey by the Halifax, now part of Lloyds Banking Group, is published a few days later. Lloyds is the biggest mortgage lender in the UK with 20% of the market and, like the Nationwide, uses its own home loan data.
Figures from the Land Registry are widely considered to be the most robust but are published much later than the lenders' data. It calculates the price change for properties that have sold multiple times since 1995. This survey only covers England and Wales.
A survey is of house prices in Scotland is published by the Registers of Scotland, using a simple average of house prices. The Land and Property Services assisted by the Northern Ireland Statistics and Research Agency produces a quarterly house price index in Northern Ireland.
The official UK statistical authority - the Office for National Statistics - is another well-regarded survey, used for reference by government. It offers a UK-wide regional breakdown. It draws on data from the regulated mortgage survey by the Council of Mortgage Lenders, so excludes cash buyers of property.
Housing market sentiment is reflected in the Royal Institution of Chartered Surveyors (Rics) survey of some of its members.
Various other surveys include a Hometrack review of house prices in UK cities, and a Rightmove survey of asking prices.