15, HAM ISLAND, OLD WINDSOR, WINDSOR, SL4 2JY - £525,000

The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.

15 HAM ISLAND is a very small detached house of 85m², built sometime between 1900 and 1929, which could now be worth an estimated £534,225. It was last sold for £525,000 in August 2023, which was around 54% below the average August 2023 detached price in the Windsor and Maidenhead local authority area. The most recent EPC inspection was December 2022, where the current energy rating was E, and the potential energy rating was B.

15 HAM ISLAND Sold Prices

Land registry data shows two sales for 15 HAM 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 Windsor and Maidenhead local authority area for the corresponding sale date. Both of the two 15 HAM 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
2023 29 AUG	£525,000	£1,129,660	54% below HPI
2005 22 JUL	£235,000	£524,801	55% below HPI

15 HAM ISLAND Price Paid vs. HPI Average

The below graph shows the average detached house price in the Windsor and Maidenhead local authority area over time, sourced from the HPI. The two 15 HAM ISLAND sales from July 2005 and August 2023 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 2005 sale was for 55% below the HPI. So the extrapolation line tracks at 55% below the HPI over time, until the August 2023 sale, where it rises to 54% below the HPI. The line then continues to track at 54% below the HPI.

What might 15 HAM ISLAND be worth now?

15 HAM ISLAND might now be worth an estimated £534,225.

This is based on house price inflation of 1.8%, between August 2023 and February 2025, for detached houses, in the Windsor and Maidenhead local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 1.8% inflationary increase is applied to the most recent sale price for 15 HAM ISLAND of £525,000 on 29th August 2023. For the value to have increased from £525,000 to £534,225 over the two years and six months to February 2025, the following assumptions must hold true:

• The value of 15 HAM ISLAND has moved in line with the HPI for detached houses in the Windsor and Maidenhead local authority area.
• The August 2023 sale price of £525,000 represented a fair market value for the property.
• The size, condition, and specification of 15 HAM ISLAND has not materially changed since August 2023.

How Large is 15 HAM ISLAND?

15 HAM ISLAND is 85m² according to the EPC inspection conducted in December 2022. This puts it in the smallest 10% of detached houses houses in Wraysbury, based on EPC data. The below chart shows the distribution of detached houses houses by size in Wraysbury, and where 15 HAM ISLAND lies on this distribution: 6% of detached houses houses are smaller than 15 HAM ISLAND, and 94% of houses are larger. Note that EPC data is not available for all properties in Wraysbury.

15 HAM ISLAND: Plot and Title Map

15 HAM ISLAND sits on a plot of roughly 0.157 of an acre, or 634m². The below map shows the location of 15 HAM 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 HAM 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 HAM ISLAND?

15 HAM ISLAND is located in OLD WINDSOR, in the SL4 postcode district. The below map shows the position of No. 15 on HAM ISLAND.