40, PENFOLD LANE, GREAT BILLING, NORTHAMPTON, NN3 9EF - £232,500

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 PENFOLD LANE is a very large extended detached house of 214m², built sometime between 1976 and 1982, which could now be worth an estimated £716,628. It was last sold for £232,500 in January 2001, which was around 51% above the average January 2001 detached price in the West Northamptonshire local authority area. The most recent EPC inspection was March 2009, where the current energy rating was D, and the potential energy rating was C.

40 PENFOLD LANE Sold Prices

Land registry data shows two sales for 40 PENFOLD LANE since 1^st 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 40 PENFOLD LANE 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
2001 5 JAN	£232,500	£154,172	51% above HPI
1997 12 SEP	£175,000	£105,181	66% above HPI

40 PENFOLD LANE Price Paid vs. HPI Average

The below graph shows the average detached house price in the West Northamptonshire local authority area over time, sourced from the HPI. The two 40 PENFOLD LANE sales from September 1997 and January 2001 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 1997 sale was for 66% above the HPI. So the extrapolation line tracks at 66% above the HPI over time, until the January 2001 sale, where it falls to 51% above the HPI. The line then continues to track at 51% above the HPI.

What might 40 PENFOLD LANE be worth now?

40 PENFOLD LANE might now be worth an estimated £716,628.

This is based on house price inflation of 208.2%, between January 2001 and June 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 208.2% inflationary increase is applied to the most recent sale price for 40 PENFOLD LANE of £232,500 on 5th January 2001. For the value to have increased from £232,500 to £716,628 over the 23 years and seven months to June 2025, the following assumptions must hold true:

• The value of 40 PENFOLD LANE has moved in line with the HPI for detached houses in the West Northamptonshire local authority area.
• The January 2001 sale price of £232,500 represented a fair market value for the property.
• The size, condition, and specification of 40 PENFOLD LANE has not materially changed since January 2001.

How Large is 40 PENFOLD LANE?

40 PENFOLD LANE is 214m², which includes two extensions, according to the EPC inspection conducted in March 2009. This puts it in the largest 10% 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 40 PENFOLD LANE lies on this distribution: 96% of detached houses houses are smaller than 40 PENFOLD LANE, and 4% of houses are larger. Note that EPC data is not available for all properties in Northampton.

40 PENFOLD LANE: Plot and Title Map

40 PENFOLD LANE sits on a plot of roughly 0.234 of an acre, or 947m². The below map shows the location of 40 PENFOLD LANE, 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 PENFOLD LANE). 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 40 PENFOLD LANE?

40 PENFOLD LANE is located in GREAT BILLING, in the NN3 postcode district. The below map shows the position of No. 40 on PENFOLD LANE.