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.
18 SIMPSON CLOSE is a very small terraced house of 38m², built sometime between 1983 and 1990, which could now be worth an estimated £345,507. It was last sold for £155,000 in October 2004, which was around 29% below the average October 2004 terraced price in the Windsor and Maidenhead local authority area. The most recent EPC inspection was May 2026, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows three sales for 18 SIMPSON CLOSE since 1st January 1995. The below table shows the price paid for the three sales, along with the average terraced price in the Windsor and Maidenhead local authority area for the corresponding sale date. All of the three 18 SIMPSON CLOSE 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 |
|---|---|---|---|
2004 18 OCT | £155,000 | £219,208 | 29% below HPI |
2001 3 AUG | £120,000 | £164,811 | 27% below HPI |
1999 11 AUG | £86,000 | £122,472 | 30% below HPI |
The below graph shows the average terraced house price in the Windsor and Maidenhead local authority area over time, sourced from the HPI. The three 18 SIMPSON CLOSE sales between August 1999 and October 2004 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 2001 sale was for 27% below the HPI. So the extrapolation line tracks at 27% below the HPI over time, until the October 2004 sale, where it falls to 29% below the HPI. The line then continues to track at 29% below the HPI.

18 SIMPSON CLOSE might now be worth an estimated £345,507.
This is based on house price inflation of 122.9%, between October 2004 and May 2026, for terraced 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 122.9% inflationary increase is applied to the most recent sale price for 18 SIMPSON CLOSE of £155,000 on 18th October 2004. For the value to have increased from £155,000 to £345,507 over the 22 years and five months to May 2026, the following assumptions must hold true:
18 SIMPSON CLOSE is 38m² according to the EPC inspection conducted in May 2026. This puts it in the smallest 10% of terraced houses houses in Maidenhead, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Maidenhead, and where 18 SIMPSON CLOSE lies on this distribution: Less than 1% of terraced houses houses are smaller than 18 SIMPSON CLOSE, and more than 99% of houses are larger. Note that EPC data is not available for all properties in Maidenhead.

18 SIMPSON CLOSE sits on a plot of roughly 0.006 of an acre, or 26m². The below map shows the location of 18 SIMPSON CLOSE, 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 18 SIMPSON CLOSE). 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.

18 SIMPSON CLOSE is located in MAIDENHEAD, in the SL6 postcode district. The below map shows the position of No. 18 on SIMPSON CLOSE.

Most recent sales first: