20, MOUNTSIDE, GUILDFORD, GU2 4JE - £1,080,000

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

20 MOUNTSIDE is a large extended detached house of 169m², built sometime between 1900 and 1929. It was last sold for £1,080,000 in August 2019, which was around 32% above the average August 2019 detached price in the Guildford local authority area. The most recent EPC inspection was November 2018, where the current energy rating was E, and the potential energy rating was C.

20 MOUNTSIDE Sold Prices

Land registry data shows two sales for 20 MOUNTSIDE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Guildford local authority area for the corresponding sale date. Both of the two 20 MOUNTSIDE 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
2019 22 AUG	£1,080,000	£818,897	32% above HPI
2000 17 AUG	£415,000	£331,892	25% above HPI

20 MOUNTSIDE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Guildford local authority area over time, sourced from the HPI. The two 20 MOUNTSIDE sales from August 2000 and August 2019 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 August 2000 sale was for 25% above the HPI. So the extrapolation line tracks at 25% above the HPI over time, until the August 2019 sale, where it rises to 32% above the HPI. The line then continues to track at 32% above the HPI.

What might 20 MOUNTSIDE be worth now?

20 MOUNTSIDE might now be worth an estimated £1,216,540.

This is based on house price inflation of 12.6%, between August 2019 and December 2024, for detached houses, in the Guildford local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 12.6% inflationary increase is applied to the most recent sale price for 20 MOUNTSIDE of £1,080,000 on 22nd August 2019. For the value to have increased from £1,080,000 to £1,216,540 over the four years and eight months to December 2024, the following assumptions must hold true:

• The value of 20 MOUNTSIDE has moved in line with the HPI for detached houses in the Guildford local authority area.
• The August 2019 sale price of £1,080,000 represented a fair market value for the property.
• The size, condition, and specification of 20 MOUNTSIDE has not materially changed since August 2019.

How Large is 20 MOUNTSIDE?

20 MOUNTSIDE is 169m², which includes two extensions, according to the EPC inspection conducted in November 2018. This puts it in the largest 30% of detached houses houses in Guildford, based on EPC data. The below chart shows the distribution of detached houses houses by size in Guildford, and where 20 MOUNTSIDE lies on this distribution: 70% of detached houses houses are smaller than 20 MOUNTSIDE, and 30% of houses are larger. Note that EPC data is not available for all properties in Guildford.

20 MOUNTSIDE: Plot and Title Map

20 MOUNTSIDE sits on a plot of roughly 0.196 of an acre, or 794m². The below map shows the location of 20 MOUNTSIDE, 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 MOUNTSIDE). 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 MOUNTSIDE?

20 MOUNTSIDE is located in GUILDFORD, in the GU2 postcode district. The below map shows the position of No. 20 on MOUNTSIDE.