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.
40 BLACKWELL END is a midsized extended terraced house of 117m², built sometime between 1930 and 1949, which could now be worth an estimated £446,779. It was last sold for £435,000 in September 2024, which was around 91% above the average September 2024 terraced price in the West Northamptonshire local authority area. The most recent EPC inspection was October 2022, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows three sales for 40 BLACKWELL END since 1st January 1995. The below table shows the price paid for the three sales, along with the average terraced price in the West Northamptonshire local authority area for the corresponding sale date. Two of the three 40 BLACKWELL END sales were for above the average price, whilst one was 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 |
---|---|---|---|
2024 20 SEP | £435,000 | £227,416 | ![]() 91% above HPI |
2018 5 JAN | £7,500 | £183,501 | ![]() 96% below HPI |
2000 25 APR | £75,000 | £59,842 | ![]() 25% above HPI |
The below graph shows the average terraced house price in the West Northamptonshire local authority area over time, sourced from the HPI. The three 40 BLACKWELL END sales between April 2000 and September 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 January 2018 sale was for 96% below the HPI. So the extrapolation line tracks at 96% below the HPI over time, until the September 2024 sale, where it rises to 91% above the HPI. The line then continues to track at 91% above the HPI.
40 BLACKWELL END might now be worth an estimated £446,779.
This is based on house price inflation of 2.7%, between September 2024 and June 2025, for terraced 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 2.7% inflationary increase is applied to the most recent sale price for 40 BLACKWELL END of £435,000 on 20th September 2024. For the value to have increased from £435,000 to £446,779 over the one year and three months to June 2025, the following assumptions must hold true:
40 BLACKWELL END is 117m², which includes one extension, according to the EPC inspection conducted in October 2022. This puts it in the largest 50% of terraced houses houses in Potterspury, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Potterspury, and where 40 BLACKWELL END lies on this distribution: 50% of terraced houses houses are smaller than 40 BLACKWELL END, and 50% of houses are larger. Note that EPC data is not available for all properties in Potterspury.
40 BLACKWELL END sits on a plot of roughly 0.126 of an acre, or 511m². The below map shows the location of 40 BLACKWELL END, 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 40 BLACKWELL END). 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.
40 BLACKWELL END is located in POTTERSPURY, in the NN12 postcode district. The below map shows the position of No. 40 on BLACKWELL END.
Most recent sales first: