Hounslow's average home reached £512,888 in June, up £5,812 in a year. Ealing, Richmond, Hillingdon and Hammersmith and Fulham all fell. Flats were the one exception.

The average home in the borough of Hounslow sold for £512,888 in June, £5,812 more than a year earlier. That is a rise of 1.1 per cent at a time when London as a whole fell 2.5 per cent.

The figures come from the June 2026 UK House Price Index, published by HM Land Registry on 19 August.

The local detail is sharper than the headline. We pulled the same release for all 33 London boroughs. Fourteen rose and nineteen fell, and Hounslow came ninth. Every London borough on its own border went the other way.

Bar chart of the change in the average house price in the year to June 2026. Hounslow rose 1.1 per cent to £512,888 and England rose 1.8 per cent to £293,262. Richmond upon Thames fell 0.3 per cent to £818,949, Hillingdon fell 0.6 per cent to £474,665, London fell 2.5 per cent to £553,870, Ealing fell 2.7 per cent to £575,814 and Hammersmith and Fulham fell 13.3 per cent to £725,562.
Source: HM Land Registry UK House Price Index, June 2026 release. Percentages calculated by Chiswick Today from the June 2025 and June 2026 averages.

Cross the river to Richmond upon Thames and the average fell 0.3 per cent. Cross the Chiswick boundary east into Hammersmith and Fulham and it fell 13.3 per cent, the fourth steepest drop in London. Only Westminster, the City of London and Kensington and Chelsea fell harder.

Houses rose, flats did not

The borough average hides a clean split by property type. Three of the four went up over the year, and the one that went down is the one first-time buyers mostly buy.

  • Detached: £1,011,513, up £12,340 or 1.2 per cent
  • Semi-detached: £694,432, up £16,721 or 2.5 per cent
  • Terraced: £593,764, up £12,197 or 2.1 per cent
  • Flats and maisonettes: £346,804, down £1,088 or 0.3 per cent

The gap between the top and bottom of that list is the story. Someone who spent the year saving for a semi found the target had moved £16,721 further away. Someone saving for a flat found it had come £1,088 closer.

The first-time buyer average across the borough was £447,859, up £5,460 on June 2025.

Two months up, but not back to the peak

Hounslow’s average bottomed out in April 2026 at £502,419. It has risen in each of the two months since, by 0.5 per cent in May and 1.5 per cent in June.

That June rise is the borough’s largest monthly move since August 2025. It has not undone the fall that followed. The average is still £24,679 below the £537,567 that Hounslow recorded in August 2025, which remains its high point in the index.

What the number is, and what it is not

Three things are worth knowing before this figure is used to price a specific house.

  • It is a mean, not a median. The UK House Price Index averages every recorded sale, so a handful of very large transactions pull it upward. In W4 that effect is severe.
  • It covers the whole borough, from Turnham Green to Bedfont, roughly eight miles. Our own analysis of every Land Registry sale in the W4 postcode district put the median Chiswick sale at £772,500, about 54 per cent above the borough average.
  • Recent months get revised. May 2026 currently reads £505,162, but the most recent months in the index move as more completions are registered, sometimes by enough to change the direction of travel. Treat June as provisional.

What it means for you

If you are selling in Chiswick, the borough figure is the wrong benchmark to quote. W4 sits far above it, and property type has mattered more than the borough trend this year: semis rose 2.5 per cent while flats slipped 0.3 per cent.

If you are buying a flat, note that this is the second year running that flats have fallen while every other property type rose. The borough flat average has gone £353,387 in June 2024, £347,892 in June 2025 and £346,804 now. Nothing in one release says that continues, but a borough flat bought two years ago has not made money on paper.

If you are budgeting for a first purchase, £500,000 is the number to watch rather than the borough average. First-time buyers’ relief gives no stamp duty up to £300,000 and 5 per cent on the portion to £500,000, but above £500,000 the relief cannot be claimed at all. The borough’s first-time buyer average of £447,859 sits under that cliff. The Chiswick median is well over it.

The July 2026 figures are published next month. May and June may both move when they are.

More local information: Chiswick house prices and W4 sale data, Chiswick planning applications and roadworks and travel in Chiswick.