17, LONGBOURN, WINDSOR, SL4 3TN - £1,600,000

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

17 LONGBOURN is a very large extended detached house of 326m², built sometime between 2003 and 2006, which could now be worth an estimated £1,594,078. It was last sold for £1,600,000 in October 2024, which was around 44% above the average October 2024 detached price in the Windsor and Maidenhead local authority area. The most recent EPC inspection was September 2022, where the current energy rating was C, and the potential energy rating was B.

17 LONGBOURN Sold Prices

Land registry data shows three sales for 17 LONGBOURN since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Windsor and Maidenhead local authority area for the corresponding sale date. All of the three 17 LONGBOURN sales were for above 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
2024 29 OCT	£1,600,000	£1,113,180	44% above HPI
2008 20 AUG	£1,250,000	£652,267	92% above HPI
2005 31 MAY	£870,000	£517,791	68% above HPI

17 LONGBOURN 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 three 17 LONGBOURN sales between May 2005 and October 2024 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 August 2008 sale was for 92% above the HPI. So the extrapolation line tracks at 92% above the HPI over time, until the October 2024 sale, where it falls to 44% above the HPI. The line then continues to track at 44% above the HPI.

What might 17 LONGBOURN be worth now?

17 LONGBOURN might now be worth an estimated £1,594,078.

This is based on house price deflation of 0.4%, between October 2024 and December 2024, 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 0.4% deflationary decrease is applied to the most recent sale price for 17 LONGBOURN of £1,600,000 on 29th October 2024. For the value to have decreased from £1,600,000 to £1,594,078 over the ten months to December 2024, the following assumptions must hold true:

• The value of 17 LONGBOURN has moved in line with the HPI for detached houses in the Windsor and Maidenhead local authority area.
• The October 2024 sale price of £1,600,000 represented a fair market value for the property.
• The size, condition, and specification of 17 LONGBOURN has not materially changed since October 2024.

How Large is 17 LONGBOURN?

17 LONGBOURN is 326m², which includes one extension, according to the EPC inspection conducted in September 2022. This puts it in the largest 10% of detached houses houses in Windsor, based on EPC data. The below chart shows the distribution of detached houses houses by size in Windsor, and where 17 LONGBOURN lies on this distribution: 97% of detached houses houses are smaller than 17 LONGBOURN, and 3% of houses are larger. Note that EPC data is not available for all properties in Windsor.

17 LONGBOURN: Plot and Title Map

17 LONGBOURN sits on a plot of roughly 0.274 of an acre, or 1,110m². The below map shows the location of 17 LONGBOURN, 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 17 LONGBOURN). 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 17 LONGBOURN?

17 LONGBOURN is located in WINDSOR, in the SL4 postcode district. The below map shows the position of No. 17 on LONGBOURN.