Houses in Mortlake cost close to a million pounds, and that figure is just the middle of the market. A flat is the cheapest way in, at about half a million. Terraces cost more than a million. The detached houses cost more than most people will earn in a decade.
The Land Registry recorded 161 sales in Mortlake in the year to May 2026, at a median of £955,000. The split by type explains the headline figure. The 58 flats sold at a median of £500,000 and the 59 terraces at £1,100,000. The 30 semi-detached houses went for £1,537,500 and the 14 detached houses for £2,625,000. Flats and terraces made up most of the sales, so the median falls between them, and it describes a home that hardly anyone here actually buys.
Prices have eased slightly. The official house price index for the area recorded a fall of 2.5% in the twelve months to May 2026, and flats fell by 4.1%. A drop of a few percent on a million-pound house still leaves a million-pound house. It gives buyers a little room to negotiate, but prices remain very high.
Most homes here sit in band G for council tax, and only about 1% are in bands A or B. A band D home in Richmond upon Thames pays about £2,486 a year, but band D is the middle of the scale, and most Mortlake homes are above it. Band G is one step from the top, which is where the typical home in Mortlake is. It is worth checking the band of the actual house on the government's council tax valuation list, because two neighbouring houses can be several bands apart.
Richmond upon Thames, taken as a whole, puts typical private rent at about £2,310 a month as of April 2026. That is a mean from the Office for National Statistics rent index for the borough and is lower than what local listings will show. By size, the borough averages about £1,710 for one bedroom, £2,200 for two, £2,650 for three and £3,870 for four or more. No reliable figure exists for studios or single rooms, so none is given.
The Office for National Statistics models gross household income across Mortlake at about £107,500 a year for the financial year to March 2023. That is before tax and averaged across the area, and it is already a few years old. Even a household on that income would find a terrace at £1,100,000 a serious stretch, and a flat at £500,000 is a big commitment rather than a starter home. Mortlake's incomes are high, and its house prices are higher still.
Of the sales that could be matched to an energy certificate's floor area, which is about 78% of them, the median price was about £9,460 per square metre. The typical home behind that figure has about 115 square metres of floor space. That covers most sales, though not all of them.
At the 2021 Census, about 13% of Mortlake households had one bedroom, 27% had two, 23% had three and 37% had four or more. Four or more bedrooms is the most common size in Mortlake, so a buyer looking for a modest two-bed is competing for the second-largest group of homes.
Houses in Mortlake are poor value even for people on Mortlake incomes. The recent dip in prices has made them slightly less expensive without making them affordable.