16, GRASMERE AVENUE, HARPENDEN, AL5 5PS - £1,722,000

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

16 GRASMERE AVENUE is a small detached house of 137m², built sometime between 1950 and 1966, which could now be worth an estimated £1,989,640. It was last sold for £1,722,000 in June 2021, which was around 60% above the average June 2021 detached price in the St Albans local authority area. The most recent EPC inspection was February 2012, where the current energy rating was E, and the potential energy rating was D.

16 GRASMERE AVENUE Sold Prices

Land registry data shows two sales for 16 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 16 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
2021 30 JUN	£1,722,000	£1,077,120	60% above HPI
2012 11 MAY	£995,000	£717,161	39% above HPI

16 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 16 GRASMERE AVENUE sales from May 2012 and June 2021 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 May 2012 sale was for 39% above the HPI. So the extrapolation line tracks at 39% above the HPI over time, until the June 2021 sale, where it rises to 60% above the HPI. The line then continues to track at 60% above the HPI.

What might 16 GRASMERE AVENUE be worth now?

16 GRASMERE AVENUE might now be worth an estimated £1,989,640.

This is based on house price inflation of 15.5%, between June 2021 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 15.5% inflationary increase is applied to the most recent sale price for 16 GRASMERE AVENUE of £1,722,000 on 30th June 2021. For the value to have increased from £1,722,000 to £1,989,640 over the two years and six months to December 2024, the following assumptions must hold true:

• The value of 16 GRASMERE AVENUE has moved in line with the HPI for detached houses in the St Albans local authority area.
• The June 2021 sale price of £1,722,000 represented a fair market value for the property.
• The size, condition, and specification of 16 GRASMERE AVENUE has not materially changed since June 2021.

How Large is 16 GRASMERE AVENUE?

16 GRASMERE AVENUE is 137m² according to the EPC inspection conducted in February 2012. 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 16 GRASMERE AVENUE lies on this distribution: 32% of detached houses houses are smaller than 16 GRASMERE AVENUE, and 68% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

16 GRASMERE AVENUE: Plot and Title Map

16 GRASMERE AVENUE sits on a plot of roughly 0.169 of an acre, or 682m². The below map shows the location of 16 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 16 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 16 GRASMERE AVENUE?

16 GRASMERE AVENUE is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 16 on GRASMERE AVENUE.