20, VALLEYSIDE, HEMEL HEMPSTEAD, HP1 2LN - £412,500

The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.

20 VALLEYSIDE is a small terraced house of 118m², built sometime between 1967 and 1975, which could now be worth an estimated £403,272. It was last sold for £412,500 in October 2025, which was around 4% below the average October 2025 terraced price in the Dacorum local authority area. The most recent EPC inspection was June 2025, where the current energy rating was D, and the potential energy rating was C.

20 VALLEYSIDE Sold Prices

Land registry data shows two sales for 20 VALLEYSIDE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average terraced price in the Dacorum local authority area for the corresponding sale date. Both of the two 20 VALLEYSIDE sales 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
2025 24 OCT	£412,500	£430,317	4% below HPI
2025 5 FEB	£260,000	£413,298	37% below HPI

20 VALLEYSIDE Price Paid vs. HPI Average

The below graph shows the average terraced house price in the Dacorum local authority area over time, sourced from the HPI. The two 20 VALLEYSIDE sales from February 2025 and October 2025 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 February 2025 sale was for 37% below the HPI. So the extrapolation line tracks at 37% below the HPI over time, until the October 2025 sale, where it rises to 4% below the HPI. The line then continues to track at 4% below the HPI.

What might 20 VALLEYSIDE be worth now?

20 VALLEYSIDE might now be worth an estimated £403,272.

This is based on house price deflation of 2.2%, between October 2025 and May 2026, for terraced houses, in the Dacorum local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 2.2% deflationary decrease is applied to the most recent sale price for 20 VALLEYSIDE of £412,500 on 24th October 2025. For the value to have decreased from £412,500 to £403,272 over the one year and five months to May 2026, the following assumptions must hold true:

• The value of 20 VALLEYSIDE has moved in line with the HPI for terraced houses in the Dacorum local authority area.
• The October 2025 sale price of £412,500 represented a fair market value for the property.
• The size, condition, and specification of 20 VALLEYSIDE has not materially changed since October 2025.

How Large is 20 VALLEYSIDE?

20 VALLEYSIDE is 118m² according to the EPC inspection conducted in June 2025. This puts it in the smallest 40% of terraced houses houses in Hemel Hempstead, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Hemel Hempstead, and where 20 VALLEYSIDE lies on this distribution: 39% of terraced houses houses are smaller than 20 VALLEYSIDE, and 60% of houses are larger. Note that EPC data is not available for all properties in Hemel Hempstead.

20 VALLEYSIDE: Plot and Title Map

20 VALLEYSIDE sits on a plot of roughly 0.046 of an acre, or 188m². The below map shows the location of 20 VALLEYSIDE, 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 20 VALLEYSIDE). 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 20 VALLEYSIDE?

20 VALLEYSIDE is located in HEMEL HEMPSTEAD, in the HP1 postcode district. The below map shows the position of No. 20 on VALLEYSIDE.