18, WATLING KNOLL, RADLETT, WD7 7HW - £915,000

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

18 WATLING KNOLL is a small extended detached house of 163m², built sometime between 1930 and 1949, which could now be worth an estimated £968,842. It was last sold for £915,000 in June 2021, which was around 17% below the average June 2021 detached price in the Hertsmere local authority area. The most recent EPC inspection was January 2017, where the current energy rating was C, and the potential energy rating was B.

18 WATLING KNOLL Sold Prices

Land registry data shows four sales for 18 WATLING KNOLL since 1^st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the Hertsmere local authority area for the corresponding sale date. All of the four 18 WATLING KNOLL sales were 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
2021 24 JUN	£915,000	£1,107,860	17% below HPI
2007 18 SEP	£475,000	£649,183	27% below HPI
2004 21 OCT	£387,500	£541,990	29% below HPI
1998 6 JAN	£145,000	£247,945	42% below HPI

18 WATLING KNOLL Price Paid vs. HPI Average

The below graph shows the average detached house price in the Hertsmere local authority area over time, sourced from the HPI. The four 18 WATLING KNOLL sales between January 1998 and June 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 2007 sale was for 27% below the HPI. So the extrapolation line tracks at 27% below the HPI over time, until the June 2021 sale, where it rises to 17% below the HPI. The line then continues to track at 17% below the HPI.

What might 18 WATLING KNOLL be worth now?

18 WATLING KNOLL might now be worth an estimated £968,842.

This is based on house price inflation of 5.9%, between June 2021 and February 2025, for detached houses, in the Hertsmere local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 5.9% inflationary increase is applied to the most recent sale price for 18 WATLING KNOLL of £915,000 on 24th June 2021. For the value to have increased from £915,000 to £968,842 over the four years and four months to February 2025, the following assumptions must hold true:

• The value of 18 WATLING KNOLL has moved in line with the HPI for detached houses in the Hertsmere local authority area.
• The June 2021 sale price of £915,000 represented a fair market value for the property.
• The size, condition, and specification of 18 WATLING KNOLL has not materially changed since June 2021.

How Large is 18 WATLING KNOLL?

18 WATLING KNOLL is 163m², which includes three extensions, according to the EPC inspection conducted in January 2017. This puts it in the smallest 30% of detached houses houses in Radlett, based on EPC data. The below chart shows the distribution of detached houses houses by size in Radlett, and where 18 WATLING KNOLL lies on this distribution: 27% of detached houses houses are smaller than 18 WATLING KNOLL, and 73% of houses are larger. Note that EPC data is not available for all properties in Radlett.

18 WATLING KNOLL: Plot and Title Map

18 WATLING KNOLL sits on a plot of roughly 0.089 of an acre, or 362m². The below map shows the location of 18 WATLING KNOLL, 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 18 WATLING KNOLL). 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 18 WATLING KNOLL?

18 WATLING KNOLL is located in RADLETT, in the WD7 postcode district. The below map shows the position of No. 18 on WATLING KNOLL.