Chelsea Square averaged £18,600,000 over the past year, up 18 per cent, while the borough containing it, Kensington and Chelsea, fell 14.1 per cent to an average of £1,233,000.
The average house price in Kensington and Chelsea in July 2026 was £1,233,000, which is roughly a fifteenth of what the average house on Chelsea Square fetched over the same period.
Two kinds of number appear below. The first is official: ONS and Land Registry averages for July 2026, provisional, which show Kensington and Chelsea down 14.1 per cent on the year against a London fall of 3.3 per cent. The second is portal data from Rightmove, Zoopla, Foxtons and OnTheMarket, covering sales and listings through late summer 2026. Asking prices and sold prices are different animals and are labelled as such here. Nobody’s personal fortune is estimated in this piece, because no verified figure for any individual exists in the material behind it. The only sums are what buildings changed hands for.
1. Belgravia, SW1X: an average of £3,623,398, and most of what sells is a flat
House prices in Belgravia average £3,623,398 over the last year on Rightmove’s numbers, and the majority of properties sold were flats, at an average of £3,079,047. Foxtons’ live tracker cuts it differently, putting flats at £2,360,696 and houses at £6,450,000, a gap that tells you how much depends on which doors you count. HousesForSaleToRent records 363 transactions across SW1X in three years at an average of £4,935,916, with the most expensive at £74,933,000; PropertyMarketIntel separately reports a Knightsbridge and Belgravia sale at £179,000,000 in March 2022, a figure carried by that one source. The live end of the market is more legible: a Grade II-listed townhouse on Eaton Place currently sits with Beauchamp Estates at a guide price of £37,950,000. A guide price in Belgravia is not a ceiling. It is an invitation.
2. Chelsea, SW3: £2,517,889 on average, and still 23 per cent below the 2014 peak
Zoopla puts the average sold price in Chelsea Brompton over the last twelve months at £2,517,889, which sits inside the £2m to £2.5m band Country Life gives for the SW3 postcode generally. The same Country Life report cites the Coutts London Prime Property Index showing prices currently 23 per cent below where they stood at the 2014 peak, and quotes Coutts real estate director Katherine O’Shea describing Chelsea, South Kensington and Bayswater as “some of the most compelling value we’ve seen in over a decade”. Twelve years is a long time for a market to sulk, and the people doing the buying are mostly the people who already owned something else. Being down 23 per cent is a complaint only an owner can afford to make.
3. Chelsea Square, SW3: £18,600,000 on average, up 18 per cent while the borough fell
One square inside that same postcode went the other way entirely. Rightmove records an overall average of £18,600,000 on Chelsea Square over the last year, 18 per cent up on the previous twelve months and 43 per cent above the 2016 peak of £13,000,000. That is a single square with a handful of sales, not a reading of SW3, and it should be treated as such. It is also the clearest illustration available of what prime property actually means in 2026: the borough average falls 14.1 per cent, and a few dozen front doors appreciate by almost a fifth. Averages are for people who can be grouped.
4. Notting Hill, W11: an average of £2,091,890, with terraces at £3.79m
Over the twelve months to 30 April 2026 the average sold price across W11 was £2,091,890, according to agency Alexanders citing HM Land Registry. The composition is the story. Flats made up the majority of sales at an average of £939,745, while terraced houses went at an average of £3.79m and semi-detached at £5.15m, which means the same postcode serves a first flat and a family seat without blinking. HousesForSaleToRent counts 879 transactions in W11 over three years at an average of £2,204,458, the most expensive at £41,000,000. Nine hundred transactions in three years makes Notting Hill, by prime standards, almost a functioning housing market.
5. West Chelsea, SW10: £1,988,257 on average, and a twelve-to-one spread inside one postcode
Zoopla’s figure for SW10 over the last twelve months is £1,988,257, which conceals the widest internal gap on this list. Detached houses in SW10 averaged £11,225,375 while flats and apartments averaged £924,258, with semi-detached at £3,519,938 and terraced at £3,933,253. Twelve times, between two types of property on the same streets, in the postcode that contains World’s End. Nowhere else in this ranking does the arithmetic of a single average do so much work.
6. Holland Park: £1,844,472 on Rightmove, £2,145,000 on OnTheMarket, down 31 per cent
Holland Park is not a postcode, which is half of why its numbers argue with each other. The area spans W11, W8 and W14, and Rightmove gives an overall average of £1,844,472 over the last year, with flats at £1,140,174, terraced houses at £4,392,119 and semi-detached at £6,337,500. OnTheMarket puts the average paid at £2,145,000 as of 14 August 2026, a fall of 31 per cent over twelve months. Both can be true at once, because they are counting different streets and different months. Anyone quoting a single Holland Park number at dinner is quoting a methodology.
7. Tetbury, Gloucestershire: Highgrove, Gatcombe Park, and a street reported at over £8m
The King owns Highgrove House near Tetbury, where he tends the gardens and champions organic farming; the nine-bedroom house stays closed, though the gardens open for guided tours, per Countryfile. Five miles south of Stroud and about six north of Highgrove, between Minchinhampton and Avening, sits Gatcombe Park, the private country home of Anne, Princess Royal. On price, the available ranking is unofficial: StudyCountry’s compilation names Lasborough in Tetbury as the most expensive street, at over £8 million on average, with Saddlewood second at just over £3.6 million and Avening third at £3.3 million. Those are single-source figures from an aggregator rather than Land Registry pulls, and worth holding loosely. The royal geography, by contrast, is a matter of public record, and it is remarkably compact.
8. Chipping Norton and Moreton-in-Marsh: Beckhams, Cowell, Bamford, and a 1202 family tree
David and Victoria Beckham own a converted barn near Chipping Norton, Forbes reports, and Kate Moss has long had a home in Little Faringdon. Simon Cowell moved out of London after a series of break-ins at his mansion there and now lives in a Grade II mansion near Chipping Norton with his fiancée Lauren, their son Eric and two Yorkshire terriers, Squiddy and Diddly, according to Countryfile. WWD calls Carole Bamford the real queen of the Cotswolds, built on the lifestyle empire she runs out of Moreton-in-Marsh. The oldest money in the neighbourhood is also the draughtiest: at Stanway, the Earl of Wemyss, whose family tree runs back to 1202, occasionally opens a house Rick Steves describes as musty and threadbare, and still lives in it with his wife. Ian McEwan and Annalena McAfee have nine acres near Miserden. No postcode in London has that cast list.
9. Burnham Market, North Norfolk: £733,944 on sold prices, down 32 per cent in a year
North Norfolk district averaged £293,000 in July 2026, provisional, down 3.1 per cent on the £302,000 recorded a year earlier. Burnham Market, nicknamed Chelsea-on-Sea for the clientele it draws, runs at a different altitude: Rightmove’s sold-price average for the village over the last year is £733,944, which is 32 per cent down on the previous year and 27 per cent below the 2022 peak of £1,000,011, as reported by North Norfolk News. A separate market report from the Ivybridge Collection gives an average asking price of £556,900, a 53.9 per cent premium over the wider district. The two numbers are not in conflict so much as in different businesses: one counts what people pay, the other what they hope for. Second homes and holiday lets are thought to account for half the properties in the coastal enclave, which is the figure that prompted local concern about prices outrunning locals in the first place.
So what is the cheapest way through the door of any of this? Flats, everywhere, and by a distance. ONS puts flats and maisonettes in Kensington and Chelsea at £972,000 in July 2026, against £2,429,000 for terraced, £3,052,000 for semi-detached and £4,525,000 for detached. Zoopla has SW10 flats at £924,258; Land Registry data via Alexanders has W11 flats at £939,745. Three figures in this entire ranking of London property come in under a million pounds. Every one of them is a flat.
