17, THE CHOWNS, HARPENDEN, AL5 2BN - £2,740,000

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.

17 THE CHOWNS is a very large extended detached house of 393m², built sometime between 1996 and 2002, which could now be worth an estimated £2,863,092. It was last sold for £2,740,000 in September 2023, which was around 131% above the average September 2023 detached price in the St Albans local authority area. The most recent EPC inspection was May 2016, where the current energy rating was C, and the potential energy rating was C.

17 THE CHOWNS Sold Prices

Land registry data shows two sales for 17 THE CHOWNS since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the St Albans local authority area for the corresponding sale date. Both of the two 17 THE CHOWNS 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
2023 18 SEP	£2,740,000	£1,184,440	131% above HPI
2017 28 FEB	£1,875,000	£1,049,520	79% above HPI

17 THE CHOWNS Price Paid vs. HPI Average

The below graph shows the average detached house price in the St Albans local authority area over time, sourced from the HPI. The two 17 THE CHOWNS sales from February 2017 and September 2023 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 February 2017 sale was for 79% above the HPI. So the extrapolation line tracks at 79% above the HPI over time, until the September 2023 sale, where it rises to 131% above the HPI. The line then continues to track at 131% above the HPI.

What might 17 THE CHOWNS be worth now?

17 THE CHOWNS might now be worth an estimated £2,863,092.

This is based on house price inflation of 4.5%, between September 2023 and February 2025, for detached houses, in the St Albans local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 4.5% inflationary increase is applied to the most recent sale price for 17 THE CHOWNS of £2,740,000 on 18th September 2023. For the value to have increased from £2,740,000 to £2,863,092 over the two years and seven months to February 2025, the following assumptions must hold true:

• The value of 17 THE CHOWNS has moved in line with the HPI for detached houses in the St Albans local authority area.
• The September 2023 sale price of £2,740,000 represented a fair market value for the property.
• The size, condition, and specification of 17 THE CHOWNS has not materially changed since September 2023.

How Large is 17 THE CHOWNS?

17 THE CHOWNS is 393m², which includes two extensions, according to the EPC inspection conducted in May 2016. This puts it in the largest 10% of detached houses houses in Harpenden, based on EPC data. The below chart shows the distribution of detached houses houses by size in Harpenden, and where 17 THE CHOWNS lies on this distribution: 95% of detached houses houses are smaller than 17 THE CHOWNS, and 5% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

17 THE CHOWNS: Plot and Title Map

17 THE CHOWNS sits on a plot of roughly 0.457 of an acre, or 1,850m². The below map shows the location of 17 THE CHOWNS, 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 THE CHOWNS). 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 THE CHOWNS?

17 THE CHOWNS is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 17 on THE CHOWNS.