17, PIPERS AVENUE, HARPENDEN, AL5 1HB - £595,000

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

17 PIPERS AVENUE is a large extended detached house of 244m², built sometime between 1950 and 1966, which could now be worth an estimated £1,283,779. It was last sold for £595,000 in August 2009, which was around 3% above the average August 2009 detached price in the St Albans local authority area. The most recent EPC inspection was September 2017, where the current energy rating was C, and the potential energy rating was C.

17 PIPERS AVENUE Sold Prices

Land registry data shows two sales for 17 PIPERS 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. One of the two 17 PIPERS AVENUE sales was for above the average price, whilst the other was 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
2009 21 AUG	£595,000	£576,809	3% above HPI
2002 5 APR	£370,000	£432,261	14% below HPI

17 PIPERS 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 17 PIPERS AVENUE sales from April 2002 and August 2009 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 April 2002 sale was for 14% below the HPI. So the extrapolation line tracks at 14% below the HPI over time, until the August 2009 sale, where it rises to 3% above the HPI. The line then continues to track at 3% above the HPI.

What might 17 PIPERS AVENUE be worth now?

17 PIPERS AVENUE might now be worth an estimated £1,283,779.

This is based on house price inflation of 115.8%, between August 2009 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 115.8% inflationary increase is applied to the most recent sale price for 17 PIPERS AVENUE of £595,000 on 21st August 2009. For the value to have increased from £595,000 to £1,283,779 over the fourteen years and eight months to December 2024, the following assumptions must hold true:

• The value of 17 PIPERS AVENUE has moved in line with the HPI for detached houses in the St Albans local authority area.
• The August 2009 sale price of £595,000 represented a fair market value for the property.
• The size, condition, and specification of 17 PIPERS AVENUE has not materially changed since August 2009.

How Large is 17 PIPERS AVENUE?

17 PIPERS AVENUE is 244m², which includes one extension, according to the EPC inspection conducted in September 2017. This puts it in the largest 30% 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 17 PIPERS AVENUE lies on this distribution: 79% of detached houses houses are smaller than 17 PIPERS AVENUE, and 20% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

17 PIPERS AVENUE: Plot and Title Map

17 PIPERS AVENUE sits on a plot of roughly 0.200 of an acre, or 809m². The below map shows the location of 17 PIPERS 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 17 PIPERS 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 17 PIPERS AVENUE?

17 PIPERS AVENUE is located in HARPENDEN, in the AL5 postcode district. The below map shows the position of No. 17 on PIPERS AVENUE.