18, HARTWELL GARDENS, HARPENDEN, AL5 2RW - £875,000

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 HARTWELL GARDENS is a small detached house of 140m², built sometime between 1976 and 1982, which could now be worth an estimated £1,238,437. It was last sold for £875,000 in January 2015, which was about the average January 2015 detached price in the St Albans local authority area. The most recent EPC inspection was June 2014, where the current energy rating was D, and the potential energy rating was C.

18 HARTWELL GARDENS Sold Prices

Land registry data shows two sales for 18 HARTWELL GARDENS 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. One of the two 18 HARTWELL GARDENS sales was roughly equal to the average price, whilst the other was 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
2015 8 JAN	£875,000	£879,305	Close to HPI
1995 20 JUL	£215,000	£183,732	17% above HPI

18 HARTWELL GARDENS 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 18 HARTWELL GARDENS sales from July 1995 and January 2015 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 July 1995 sale was for 17% above the HPI. So the extrapolation line tracks at 17% above the HPI over time, until the January 2015 sale, where it falls to roughly the same level as the HPI. The line then continues to track in line with the HPI.

What might 18 HARTWELL GARDENS be worth now?

18 HARTWELL GARDENS might now be worth an estimated £1,238,437.

This is based on house price inflation of 41.5%, between January 2015 and December 2024, 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 41.5% inflationary increase is applied to the most recent sale price for 18 HARTWELL GARDENS of £875,000 on 8th January 2015. For the value to have increased from £875,000 to £1,238,437 over the eight years and one month to December 2024, the following assumptions must hold true:

• The value of 18 HARTWELL GARDENS has moved in line with the HPI for detached houses in the St Albans local authority area.
• The January 2015 sale price of £875,000 represented a fair market value for the property.
• The size, condition, and specification of 18 HARTWELL GARDENS has not materially changed since January 2015.

How Large is 18 HARTWELL GARDENS?

18 HARTWELL GARDENS is 140m² according to the EPC inspection conducted in June 2014. This puts it in the smallest 40% 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 18 HARTWELL GARDENS lies on this distribution: 34% of detached houses houses are smaller than 18 HARTWELL GARDENS, and 65% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

18 HARTWELL GARDENS: Plot and Title Map

18 HARTWELL GARDENS sits on a plot of roughly 0.124 of an acre, or 501m². The below map shows the location of 18 HARTWELL GARDENS, 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 HARTWELL GARDENS). 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 HARTWELL GARDENS?

18 HARTWELL GARDENS is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 18 on HARTWELL GARDENS.