17, WEST STREET, UPTON, NORTHAMPTON, NN5 4EP - £413,000

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 WEST STREET is a small extended semi-detached house of 90m², built sometime between 2007 and 2011, which could now be worth an estimated £467,258. It was last sold for £413,000 in September 2021, which was around 65% above the average September 2021 semi-detached price in the West Northamptonshire local authority area. The most recent EPC inspection was March 2021, where the current energy rating was C, and the potential energy rating was B.

17 WEST STREET Sold Prices

Land registry data shows two sales for 17 WEST STREET since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the West Northamptonshire local authority area for the corresponding sale date. Both of the two 17 WEST STREET 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 30 SEP	£413,000	£250,308	65% above HPI
2010 24 SEP	£330,000	£158,771	108% above HPI

17 WEST STREET Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the West Northamptonshire local authority area over time, sourced from the HPI. The two 17 WEST STREET sales from September 2010 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 September 2010 sale was for 108% above the HPI. So the extrapolation line tracks at 108% above the HPI over time, until the September 2021 sale, where it falls to 65% above the HPI. The line then continues to track at 65% above the HPI.

What might 17 WEST STREET be worth now?

17 WEST STREET might now be worth an estimated £467,258.

This is based on house price inflation of 13.1%, between September 2021 and December 2024, for semi-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 13.1% inflationary increase is applied to the most recent sale price for 17 WEST STREET of £413,000 on 30th September 2021. For the value to have increased from £413,000 to £467,258 over the two years and nine months to December 2024, the following assumptions must hold true:

• The value of 17 WEST STREET has moved in line with the HPI for semi-detached houses in the West Northamptonshire local authority area.
• The September 2021 sale price of £413,000 represented a fair market value for the property.
• The size, condition, and specification of 17 WEST STREET has not materially changed since September 2021.

How Large is 17 WEST STREET?

17 WEST STREET is 90m², which includes one extension, according to the EPC inspection conducted in March 2021. This puts it in the smallest 30% of semi-detached houses houses in Northampton, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Northampton, and where 17 WEST STREET lies on this distribution: 24% of semi-detached houses houses are smaller than 17 WEST STREET, and 75% of houses are larger. Note that EPC data is not available for all properties in Northampton.

17 WEST STREET: Plot and Title Map

17 WEST STREET sits on a plot of roughly 0.066 of an acre, or 267m². The below map shows the location of 17 WEST STREET, 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 WEST STREET). 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 WEST STREET?

17 WEST STREET is located in UPTON, in the NN5 postcode district. The below map shows the position of No. 17 on WEST STREET.