40, WEST WAY, HARPENDEN, AL5 4RD - £525,000

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

40 WEST WAY is a large extended semi-detached house of 196m², built sometime between 1930 and 1949, which could now be worth an estimated £1,000,277. It was last sold for £525,000 in August 2007, which was around 33% above the average August 2007 semi-detached price in the St Albans local authority area. The most recent EPC inspection was June 2012, where the current energy rating was D, and the potential energy rating was C.

40 WEST WAY Sold Prices

Land registry data shows two sales for 40 WEST WAY since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the St Albans local authority area for the corresponding sale date. Both of the two 40 WEST WAY 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
2007 10 AUG	£525,000	£395,502	33% above HPI
1997 17 DEC	£174,000	£143,535	21% above HPI

40 WEST WAY Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the St Albans local authority area over time, sourced from the HPI. The two 40 WEST WAY sales from December 1997 and August 2007 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 December 1997 sale was for 21% above the HPI. So the extrapolation line tracks at 21% above the HPI over time, until the August 2007 sale, where it rises to 33% above the HPI. The line then continues to track at 33% above the HPI.

What might 40 WEST WAY be worth now?

40 WEST WAY might now be worth an estimated £1,000,277.

This is based on house price inflation of 90.5%, between August 2007 and February 2025, for semi-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 90.5% inflationary increase is applied to the most recent sale price for 40 WEST WAY of £525,000 on 10th August 2007. For the value to have increased from £525,000 to £1,000,277 over the eighteen years and six months to February 2025, the following assumptions must hold true:

• The value of 40 WEST WAY has moved in line with the HPI for semi-detached houses in the St Albans local authority area.
• The August 2007 sale price of £525,000 represented a fair market value for the property.
• The size, condition, and specification of 40 WEST WAY has not materially changed since August 2007.

How Large is 40 WEST WAY?

40 WEST WAY is 196m², which includes one extension, according to the EPC inspection conducted in June 2012. This puts it in the largest 40% of semi-detached houses houses in Harpenden, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Harpenden, and where 40 WEST WAY lies on this distribution: 65% of semi-detached houses houses are smaller than 40 WEST WAY, and 35% of houses are larger. Note that EPC data is not available for all properties in Harpenden.

40 WEST WAY: Plot and Title Map

40 WEST WAY sits on a plot of roughly 0.098 of an acre, or 395m². The below map shows the location of 40 WEST WAY, 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 WEST WAY). 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 WEST WAY?

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