19, CHESTERTON AVENUE, HARPENDEN, AL5 5ST - £840,000

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

19 CHESTERTON AVENUE is a midsized extended detached house of 157m², built sometime between 1976 and 1982, which could now be worth an estimated £1,010,307. It was last sold for £840,000 in August 2017, which was around 19% below the average August 2017 detached price in the St Albans local authority area. The most recent EPC inspection was September 2016, where the current energy rating was D, and the potential energy rating was B.

19 CHESTERTON AVENUE Sold Prices

Land registry data shows two sales for 19 CHESTERTON AVENUE 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 19 CHESTERTON AVENUE 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
2017 10 AUG	£840,000	£1,034,740	19% below HPI
2006 3 AUG	£485,000	£577,890	16% below HPI

19 CHESTERTON AVENUE 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 19 CHESTERTON AVENUE sales from August 2006 and August 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 August 2006 sale was for 16% below the HPI. So the extrapolation line tracks at 16% below the HPI over time, until the August 2017 sale, where it falls to 19% below the HPI. The line then continues to track at 19% below the HPI.

What might 19 CHESTERTON AVENUE be worth now?

19 CHESTERTON AVENUE might now be worth an estimated £1,010,307.

This is based on house price inflation of 20.3%, between August 2017 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 20.3% inflationary increase is applied to the most recent sale price for 19 CHESTERTON AVENUE of £840,000 on 10th August 2017. For the value to have increased from £840,000 to £1,010,307 over the six years and eight months to December 2024, the following assumptions must hold true:

• The value of 19 CHESTERTON AVENUE has moved in line with the HPI for detached houses in the St Albans local authority area.
• The August 2017 sale price of £840,000 represented a fair market value for the property.
• The size, condition, and specification of 19 CHESTERTON AVENUE has not materially changed since August 2017.

How Large is 19 CHESTERTON AVENUE?

19 CHESTERTON AVENUE is 157m², which includes two extensions, according to the EPC inspection conducted in September 2016. This puts it in the smallest 50% 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 19 CHESTERTON AVENUE lies on this distribution: 45% of detached houses houses are smaller than 19 CHESTERTON AVENUE, and 54% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

19 CHESTERTON AVENUE: Plot and Title Map

19 CHESTERTON AVENUE sits on a plot of roughly 0.125 of an acre, or 506m². The below map shows the location of 19 CHESTERTON AVENUE, 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 19 CHESTERTON AVENUE). 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 19 CHESTERTON AVENUE?

19 CHESTERTON AVENUE is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 19 on CHESTERTON AVENUE.