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.
27 CASTLE MOUNT is a large extended detached house of 143m², built sometime between 1996 and 2002, which could now be worth an estimated £317,191. It was last sold for £88,000 in October 1999, which was around 33% below the average October 1999 detached price in the West Northamptonshire local authority area. The most recent EPC inspection was July 2012, where the current energy rating was C, and the potential energy rating was B.
Land registry data shows two sales for 27 CASTLE MOUNT since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the West Northamptonshire local authority area for the corresponding sale date. Both of the two 27 CASTLE MOUNT 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 |
---|---|---|---|
1999 1 OCT | £88,000 | £131,605 | ![]() 33% below HPI |
1997 28 NOV | £79,950 | £105,350 | ![]() 24% below HPI |
The below graph shows the average detached house price in the West Northamptonshire local authority area over time, sourced from the HPI. The two 27 CASTLE MOUNT sales from November 1997 and October 1999 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 November 1997 sale was for 24% below the HPI. So the extrapolation line tracks at 24% below the HPI over time, until the October 1999 sale, where it falls to 33% below the HPI. The line then continues to track at 33% below the HPI.
27 CASTLE MOUNT might now be worth an estimated £317,191.
This is based on house price inflation of 260.4%, between October 1999 and February 2025, for detached houses, in the West Northamptonshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 260.4% inflationary increase is applied to the most recent sale price for 27 CASTLE MOUNT of £88,000 on 1st October 1999. For the value to have increased from £88,000 to £317,191 over the 26 years and eight months to February 2025, the following assumptions must hold true:
27 CASTLE MOUNT is 143m², which includes two extensions, according to the EPC inspection conducted in July 2012. This puts it in the largest 30% of detached houses houses in Brackley, based on EPC data. The below chart shows the distribution of detached houses houses by size in Brackley, and where 27 CASTLE MOUNT lies on this distribution: 75% of detached houses houses are smaller than 27 CASTLE MOUNT, and 24% of houses are larger. Note that EPC data is not available for all properties in Brackley.
27 CASTLE MOUNT sits on a plot of roughly 0.043 of an acre, or 176m². The below map shows the location of 27 CASTLE MOUNT, 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 27 CASTLE MOUNT). 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.
27 CASTLE MOUNT is located in BRACKLEY, in the NN13 postcode district. The below map shows the position of No. 27 on CASTLE MOUNT.
Most recent sales first: