11, THE WARREN, HARPENDEN, AL5 2NH - £1,575,000

Based on the November 2024 Price Paid Data (released on 2nd January 2025), the October 2024 House Price Index (released on 18th December 2024), and the October 2024 Energy Performance of Buildings Data (released on 28th November 2024). Sources

11 THE WARREN is a very large extended detached house of 286m², built sometime between 1950 and 1966. It was last sold for £1,575,000 in December 2017, which was around 58% above the average December 2017 detached price in the St Albans local authority area. The most recent EPC inspection was October 2013, where the current energy rating was D, and the potential energy rating was C.

11 THE WARREN Sold Prices

Land registry data shows two sales for 11 THE WARREN 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 11 THE WARREN 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
2017 6 DEC	£1,575,000	£996,567	58% above HPI
2002 12 APR	£700,000	£405,987	72% above HPI

11 THE WARREN 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 11 THE WARREN sales from April 2002 and December 2017 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 April 2002 sale was for 72% above the HPI. So the extrapolation line tracks at 72% above the HPI over time, until the December 2017 sale, where it falls to 58% above the HPI. The line then continues to track at 58% above the HPI.

How Large is 11 THE WARREN?

11 THE WARREN is 286m², which includes two extensions, according to the EPC inspection conducted in October 2013. This puts it in the largest 20% of detached houses in Harpenden, based on EPC data. The below chart shows the distribution of detached houses by size in Harpenden, and where 11 THE WARREN lies on this distribution: 87% of detached houses are smaller than 11 THE WARREN, and 13% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

11 THE WARREN: Plot and Title Map

11 THE WARREN sits on a plot of roughly 0.323 of an acre, or 1,306m². The below map shows the location of 11 THE WARREN, 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 11 THE WARREN). 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 11 THE WARREN?

11 THE WARREN is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 11 on THE WARREN.