Quarterly market data is useful because it smooths out the noise of individual weeks. When prices edge up, the question is whether that reflects broad demand, a shift in the mix of properties sold, or a few large transactions that skew the average.
Look at the detail. Compare prices by district, by property type and by tenure. A rise in the overall average can hide different movements in the prime and mass segments.
Pay attention to volumes as well as prices. Rising prices on falling volumes can signal a market that is balancing carefully. Rising prices on rising volumes can signal stronger demand.
For buyers, the quarterly picture is a reason to plan rather than to panic. Check the figures for the areas you care about, compare them with the homes you are considering, and make decisions on the evidence.
For sellers, the message is to price against recent comparables and to present the home well. A balanced market rewards properties that are clearly priced and well marketed.