9, GRASMERE AVENUE, HARPENDEN, AL5 5PT - £2,100,000

Based on the December 2024 Price Paid Data (released on 29th January 2025), the November 2024 House Price Index (released on 15th January 2025), and the December 2024 Energy Performance of Buildings Data (released on 31st January 2025). Sources

9 GRASMERE AVENUE is a large extended detached house of 242m², built sometime between 1930 and 1949. It was last sold for £2,100,000 in November 2022, which was around 83% above the average November 2022 detached price in the St Albans local authority area. The most recent EPC inspection was March 2022, where the current energy rating was C, and the potential energy rating was C.

9 GRASMERE AVENUE Sold Prices

Land registry data shows two sales for 9 GRASMERE 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 9 GRASMERE AVENUE 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
2022 11 NOV	£2,100,000	£1,145,850	83% above HPI
2010 6 OCT	£975,500	£652,075	50% above HPI

9 GRASMERE 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 9 GRASMERE AVENUE sales from October 2010 and November 2022 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 October 2010 sale was for 50% above the HPI. So the extrapolation line tracks at 50% above the HPI over time, until the November 2022 sale, where it rises to 83% above the HPI. The line then continues to track at 83% above the HPI.

How Large is 9 GRASMERE AVENUE?

9 GRASMERE AVENUE is 242m², which includes three extensions, according to the EPC inspection conducted in March 2022. This puts it in the largest 30% of detached houses in Harpenden, based on EPC data. The below chart shows the distribution of detached houses by size in Harpenden, and where 9 GRASMERE AVENUE lies on this distribution: 79% of detached houses are smaller than 9 GRASMERE AVENUE, and 21% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

9 GRASMERE AVENUE: Plot and Title Map

9 GRASMERE AVENUE sits on a plot of roughly 0.210 of an acre, or 848m². The below map shows the location of 9 GRASMERE 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 9 GRASMERE 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 9 GRASMERE AVENUE?

9 GRASMERE AVENUE is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 9 on GRASMERE AVENUE.