17, THE UPLANDS, HARPENDEN, AL5 2PG - £1,382,500

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 THE UPLANDS is a very large detached house of 460m², built in 2021, which could now be worth an estimated £1,618,061. It was last sold for £1,382,500 in September 2017, which was around 31% above the average September 2017 detached price in the St Albans local authority area. The most recent EPC inspection was April 2023, where the current energy rating was B, and the potential energy rating was B.

17 THE UPLANDS Sold Prices

Land registry data shows two sales for 17 THE UPLANDS 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 17 THE UPLANDS 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
2017 11 SEP	£1,382,500	£1,057,470	31% above HPI
2005 12 MAY	£775,000	£513,139	51% above HPI

17 THE UPLANDS 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 THE UPLANDS sales from May 2005 and September 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 May 2005 sale was for 51% above the HPI. So the extrapolation line tracks at 51% above the HPI over time, until the September 2017 sale, where it falls to 31% above the HPI. The line then continues to track at 31% above the HPI.

What might 17 THE UPLANDS be worth now?

17 THE UPLANDS might now be worth an estimated £1,618,061.

This is based on house price inflation of 17%, between September 2017 and February 2025, 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 17% inflationary increase is applied to the most recent sale price for 17 THE UPLANDS of £1,382,500 on 11th September 2017. For the value to have increased from £1,382,500 to £1,618,061 over the eight years and seven months to February 2025, the following assumptions must hold true:

• The value of 17 THE UPLANDS has moved in line with the HPI for detached houses in the St Albans local authority area.
• The September 2017 sale price of £1,382,500 represented a fair market value for the property.
• The size, condition, and specification of 17 THE UPLANDS has not materially changed since September 2017.

How Large is 17 THE UPLANDS?

17 THE UPLANDS is 460m² according to the EPC inspection conducted in April 2023. This puts it in the largest 10% 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 THE UPLANDS lies on this distribution: 97% of detached houses houses are smaller than 17 THE UPLANDS, and 3% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

17 THE UPLANDS: Plot and Title Map

17 THE UPLANDS sits on a plot of roughly 0.319 of an acre, or 1,289m². The below map shows the location of 17 THE UPLANDS, 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 THE UPLANDS). 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 THE UPLANDS?

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