40, THE ISLAND, THAMES DITTON, KT7 0SQ - £890,000

Based on the January 2025 Price Paid Data (released on 3rd March 2025), the December 2024 House Price Index (released on 19th February 2025), and the January 2025 Energy Performance of Buildings Data (released on 27th February 2025). Sources

40 THE ISLAND is a very small extended detached house of 106m², built sometime between 1976 and 1982, which could now be worth an estimated £853,461. It was last sold for £890,000 in June 2022, which was around 41% below the average June 2022 detached price in the Elmbridge local authority area. The most recent EPC inspection was January 2013, where the current energy rating was D, and the potential energy rating was B.

40 THE ISLAND Sold Prices

Land registry data shows three sales for 40 THE ISLAND since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Elmbridge local authority area for the corresponding sale date. All of the three 40 THE ISLAND sales were for below the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

Date	Price	HPI Price	Variation from HPI
2022 30 JUN	£890,000	£1,518,940	41% below HPI
2014 10 OCT	£536,000	£1,163,710	54% below HPI
2005 24 MAR	£343,800	£662,439	48% below HPI

40 THE ISLAND Price Paid vs. HPI Average

The below graph shows the average detached house price in the Elmbridge local authority area over time, sourced from the HPI. The three 40 THE ISLAND sales between March 2005 and June 2022 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the October 2014 sale was for 54% below the HPI. So the extrapolation line tracks at 54% below the HPI over time, until the June 2022 sale, where it rises to 41% below the HPI. The line then continues to track at 41% below the HPI.

What might 40 THE ISLAND be worth now?

40 THE ISLAND might now be worth an estimated £853,461.

This is based on house price deflation of 4.1%, between June 2022 and December 2024, for detached houses, in the Elmbridge local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 4.1% deflationary decrease is applied to the most recent sale price for 40 THE ISLAND of £890,000 on 30th June 2022. For the value to have decreased from £890,000 to £853,461 over the one year and six months to December 2024, the following assumptions must hold true:

• The value of 40 THE ISLAND has moved in line with the HPI for detached houses in the Elmbridge local authority area.
• The June 2022 sale price of £890,000 represented a fair market value for the property.
• The size, condition, and specification of 40 THE ISLAND has not materially changed since June 2022.

How Large is 40 THE ISLAND?

40 THE ISLAND is 106m², which includes one extension, according to the EPC inspection conducted in January 2013. This puts it in the smallest 20% of detached houses houses in Thames Ditton, based on EPC data. The below chart shows the distribution of detached houses houses by size in Thames Ditton, and where 40 THE ISLAND lies on this distribution: 14% of detached houses houses are smaller than 40 THE ISLAND, and 85% of houses are larger. Note that EPC data is not available for all properties in Thames Ditton.

40 THE ISLAND: Plot and Title Map

40 THE ISLAND sits on a plot of roughly 0.086 of an acre, or 349m². The below map shows the location of 40 THE ISLAND, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 40 THE ISLAND). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

Where is 40 THE ISLAND?

40 THE ISLAND is located in THAMES DITTON, in the KT7 postcode district. The below map shows the position of No. 40 on THE ISLAND.