40, GRANBY AVENUE, HARPENDEN, AL5 5QR - £1,750,000

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

40 GRANBY AVENUE is a large extended semi-detached house of 236m², built sometime between 1950 and 1966. It was last sold for £1,750,000 in May 2023, which was around 61% above the average May 2023 detached price in the St Albans local authority area. The most recent EPC inspection was January 2023, where the current energy rating was C, and the potential energy rating was B.

40 GRANBY AVENUE Sold Prices

Land registry data shows three sales for 40 GRANBY AVENUE since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the St Albans local authority area for the corresponding sale date. One of the three 40 GRANBY AVENUE sales was for above the average price, whilst two 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
2023 4 MAY	£1,750,000	£1,087,140	61% above HPI
2018 30 JAN	£875,000	£1,000,930	13% below HPI
2011 28 APR	£630,000	£642,652	2% below HPI

40 GRANBY 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 three 40 GRANBY AVENUE sales between April 2011 and May 2023 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 January 2018 sale was for 13% below the HPI. So the extrapolation line tracks at 13% below the HPI over time, until the May 2023 sale, where it rises to 61% above the HPI. The line then continues to track at 61% above the HPI.

How Large is 40 GRANBY AVENUE?

40 GRANBY AVENUE is 236m², which includes two extensions, according to the EPC inspection conducted in January 2023. 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 40 GRANBY AVENUE lies on this distribution: 78% of detached houses are smaller than 40 GRANBY AVENUE, and 22% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

40 GRANBY AVENUE: Plot and Title Map

40 GRANBY AVENUE sits on a plot of roughly 0.175 of an acre, or 709m². The below map shows the location of 40 GRANBY 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 40 GRANBY 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 40 GRANBY AVENUE?

40 GRANBY AVENUE is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 40 on GRANBY AVENUE.