15, THE ISLAND, THAMES DITTON, KT7 0SH - £810,000

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

15 THE ISLAND is a small detached house of 131m², built sometime between 1930 and 1949, which could now be worth an estimated £882,802. It was last sold for £810,000 in September 2020, which was around 39% below the average September 2020 detached price in the Elmbridge local authority area. The most recent EPC inspection was September 2017, where the current energy rating was D, and the potential energy rating was C.

15 THE ISLAND Sold Prices

Land registry data shows two sales for 15 THE ISLAND since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Elmbridge local authority area for the corresponding sale date. Both of the two 15 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
2020 7 SEP	£810,000	£1,336,460	39% below HPI
1999 30 JUL	£250,000	£388,949	36% below HPI

15 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 two 15 THE ISLAND sales from July 1999 and September 2020 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 July 1999 sale was for 36% below the HPI. So the extrapolation line tracks at 36% below the HPI over time, until the September 2020 sale, where it falls to 39% below the HPI. The line then continues to track at 39% below the HPI.

What might 15 THE ISLAND be worth now?

15 THE ISLAND might now be worth an estimated £882,802.

This is based on house price inflation of 9%, between September 2020 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 9% inflationary increase is applied to the most recent sale price for 15 THE ISLAND of £810,000 on 7th September 2020. For the value to have increased from £810,000 to £882,802 over the three years and nine months to December 2024, the following assumptions must hold true:

• The value of 15 THE ISLAND has moved in line with the HPI for detached houses in the Elmbridge local authority area.
• The September 2020 sale price of £810,000 represented a fair market value for the property.
• The size, condition, and specification of 15 THE ISLAND has not materially changed since September 2020.

How Large is 15 THE ISLAND?

15 THE ISLAND is 131m² according to the EPC inspection conducted in September 2017. This puts it in the smallest 40% 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 15 THE ISLAND lies on this distribution: 33% of detached houses houses are smaller than 15 THE ISLAND, and 67% of houses are larger. Note that EPC data is not available for all properties in Thames Ditton.

15 THE ISLAND: Plot and Title Map

15 THE ISLAND sits on a plot of roughly 0.067 of an acre, or 271m². The below map shows the location of 15 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 15 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 15 THE ISLAND?

15 THE ISLAND is located in THAMES DITTON, in the KT7 postcode district. The below map shows the position of No. 15 on THE ISLAND.