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.
20 THAMES ROAD is a very large extended detached house of 156m², built sometime between 1976 and 1982, which could now be worth an estimated £508,550. It was last sold for £490,000 in May 2022, which was around 7% above the average May 2022 detached price in the West Northamptonshire local authority area. The most recent EPC inspection was January 2022, where the current energy rating was C, and the potential energy rating was B.
Land registry data shows two sales for 20 THAMES ROAD 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. One of the two 20 THAMES ROAD sales was for above the average price, whilst the other 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 |
|---|---|---|---|
2022 23 MAY | £490,000 | £456,482 | 7% above HPI |
2010 28 OCT | £225,000 | £276,097 | 19% 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 20 THAMES ROAD sales from October 2010 and May 2022 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 October 2010 sale was for 19% below the HPI. So the extrapolation line tracks at 19% below the HPI over time, until the May 2022 sale, where it rises to 7% above the HPI. The line then continues to track at 7% above the HPI.

20 THAMES ROAD might now be worth an estimated £508,550.
This is based on house price inflation of 3.8%, between May 2022 and May 2026, 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 3.8% inflationary increase is applied to the most recent sale price for 20 THAMES ROAD of £490,000 on 23rd May 2022. For the value to have increased from £490,000 to £508,550 over the four years to May 2026, the following assumptions must hold true:
20 THAMES ROAD is 156m², which includes one extension, according to the EPC inspection conducted in January 2022. This puts it in the largest 20% of detached houses houses in Northampton, based on EPC data. The below chart shows the distribution of detached houses houses by size in Northampton, and where 20 THAMES ROAD lies on this distribution: 84% of detached houses houses are smaller than 20 THAMES ROAD, and 16% of houses are larger. Note that EPC data is not available for all properties in Northampton.

20 THAMES ROAD sits on a plot of roughly 0.092 of an acre, or 371m². The below map shows the location of 20 THAMES ROAD, 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 THAMES ROAD). 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.

20 THAMES ROAD is located in NORTHAMPTON, in the NN4 postcode district. The below map shows the position of No. 20 on THAMES ROAD.

Most recent sales first: