‘People are deserting it’: why are London mansions struggling to sell?

by | Oct 18, 2026 | Financial

‘People are deserting it’: why are London mansions struggling to sell?

London’s premium property market is experiencing significant strain, with luxury homes across prestigious neighborhoods showing substantial price declines. Properties in areas such as South Kensington, Knightsbridge, and Notting Hill have seen asking prices reduced by millions of pounds compared to previous years. A notable example includes a Pont Street property that sold for £4.4m in 2014, then £3.5m, and is now available for £2.5m. Some sellers face potential losses reaching 25% compared to purchase prices, according to estate agent assessments.

The downturn contrasts sharply with London’s historical premium over the broader UK market. While the average national house price stood at just under £275,000 in September, inner London borough prices fell 8.3% year-on-year, with Westminster experiencing the steepest decline at 25.4%. Similar sharp drops occurred in the City and Kensington and Chelsea. Analysts attribute the weakness to multiple factors: overvaluation during the mid-2010s growth period, Brexit impacts, pandemic effects, increased property taxes, and elevated borrowing costs.

Tax policy changes have accelerated the market slowdown. The abolition of the non-dom tax regime prompted departures of wealthy international residents, while proposed mansion tax plans for homes exceeding £2m have created uncertainty among both buyers and sellers. Properties in the prime segment now average 186 days on market, up from 178 days earlier in 2026, with sellers increasingly accepting discounts averaging 10.4% below asking prices.

Market conditions have become bifurcated. Ultra-premium properties maintaining exceptional attributes continue attracting strong buyer interest and may command asking price premiums, while standard luxury properties struggle. International demand persists from buyers in the Americas, Asia, and Africa, though sellers across price tiers report heightened competition and diminished profit expectations. Market participants indicate sellers have adopted more realistic positioning, with many accepting that material price growth appears unlikely in the near term.

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