20, PROSPECT, CORSHAM, SN13 9AF - £900,000

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

20 PROSPECT is a very large extended detached house of 227m², built sometime between 1930 and 1949, which could now be worth an estimated £1,028,202. It was last sold for £900,000 in September 2021, which was around 98% above the average September 2021 detached price in the Wiltshire local authority area. The most recent EPC inspection was April 2021, where the current energy rating was D, and the potential energy rating was C.

20 PROSPECT Sold Prices

Land registry data shows two sales for 20 PROSPECT since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Wiltshire local authority area for the corresponding sale date. Both of the two 20 PROSPECT 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
2021 29 SEP	£900,000	£454,969	98% above HPI
2008 27 MAY	£595,000	£332,358	79% above HPI

20 PROSPECT Price Paid vs. HPI Average

The below graph shows the average detached house price in the Wiltshire local authority area over time, sourced from the HPI. The two 20 PROSPECT sales from May 2008 and September 2021 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 May 2008 sale was for 79% above the HPI. So the extrapolation line tracks at 79% above the HPI over time, until the September 2021 sale, where it rises to 98% above the HPI. The line then continues to track at 98% above the HPI.

What might 20 PROSPECT be worth now?

20 PROSPECT might now be worth an estimated £1,028,202.

This is based on house price inflation of 14.2%, between September 2021 and February 2025, for detached houses, in the Wiltshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 14.2% inflationary increase is applied to the most recent sale price for 20 PROSPECT of £900,000 on 29th September 2021. For the value to have increased from £900,000 to £1,028,202 over the four years and seven months to February 2025, the following assumptions must hold true:

• The value of 20 PROSPECT has moved in line with the HPI for detached houses in the Wiltshire local authority area.
• The September 2021 sale price of £900,000 represented a fair market value for the property.
• The size, condition, and specification of 20 PROSPECT has not materially changed since September 2021.

How Large is 20 PROSPECT?

20 PROSPECT is 227m², which includes four extensions, according to the EPC inspection conducted in April 2021. This puts it in the largest 10% of detached houses houses in Corsham, based on EPC data. The below chart shows the distribution of detached houses houses by size in Corsham, and where 20 PROSPECT lies on this distribution: 98% of detached houses houses are smaller than 20 PROSPECT, and 2% of houses are larger. Note that EPC data is not available for all properties in Corsham.

20 PROSPECT: Plot and Title Map

20 PROSPECT sits on a plot of roughly 0.210 of an acre, or 850m². The below map shows the location of 20 PROSPECT, 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 20 PROSPECT). 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 20 PROSPECT?

20 PROSPECT is located in CORSHAM, in the SN13 postcode district. The below map shows the position of No. 20 on PROSPECT.