How to Read Property Price Trends: A Data-Driven Guide

Learn how to interpret UK property price data from the Land Registry. Median vs mean prices, seasonal patterns, and what trends really mean.

Where property price data comes from

All property price data on Check Local comes from HM Land Registry's Price Paid dataset. This records every residential property transaction in England and Wales at the point of registration. It includes the price paid, the date, the property type (detached, semi-detached, terraced, flat), and whether it was a new build. This is the most comprehensive and reliable source of property price data in the UK.

Median vs mean: why it matters

The mean (average) property price is easily skewed by a small number of very expensive or very cheap sales. The median (middle value) gives a better picture of the typical property price in an area. If an area has 100 sales and one mansion sells for £5 million, the mean jumps dramatically while the median barely moves. Check Local uses median prices for this reason.

Seasonal patterns

Property markets follow predictable seasonal patterns. Spring (March-May) typically sees the highest volume of sales and often the highest prices. Summer is busy but prices plateau. Autumn sees another peak. Winter (December-February) is the quietest period with often the lowest prices. Understanding these patterns helps you interpret whether a price change is seasonal or a genuine trend.

Year-on-year trends

The most meaningful way to track prices is year-on-year comparison, which eliminates seasonal effects. If the median price in March 2025 was £350,000 and in March 2026 it is £364,000, that is a 4% annual increase. Check Local calculates these automatically. Look for consistency — an area with steady 3-5% growth over five years is more reliable than one that swings wildly.

Volume matters too

Price trends are more reliable when based on a high volume of transactions. An area with 500 sales per year gives a statistically robust picture. An area with 20 sales per year can show volatile trends that do not reflect the true market. Always check the number of transactions alongside the price data.

New builds vs existing stock

New build properties typically sell for a 10-20% premium over equivalent existing properties. If a large new development completes in an area, it can push the median price up even if existing property values have not changed. Check Local separates new build and existing property data to give you a clearer picture.