21, MOUNT STREET, PENZANCE, TR18 2EU - £141,000

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.

21 MOUNT STREET is a very small extended terraced house of 65m², built sometime between 1900 and 1929, which could now be worth an estimated £192,205. It was last sold for £141,000 in September 2007, which was around 17% below the average September 2007 terraced price in the Cornwall local authority area. The most recent EPC inspection was December 2021, where the current energy rating was D, and the potential energy rating was B.

21 MOUNT STREET Sold Prices

Land registry data shows two sales for 21 MOUNT STREET since 1^st January 1995. The below table shows the price paid for the two sales, along with the average terraced price in the Cornwall local authority area for the corresponding sale date. Both of the two 21 MOUNT STREET 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
2007 14 SEP	£141,000	£170,724	17% below HPI
1996 18 OCT	£38,000	£38,218	1% below HPI

21 MOUNT STREET Price Paid vs. HPI Average

The below graph shows the average terraced house price in the Cornwall local authority area over time, sourced from the HPI. The two 21 MOUNT STREET sales from October 1996 and September 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 October 1996 sale was for 1% below the HPI. So the extrapolation line tracks at 1% below the HPI over time, until the September 2007 sale, where it falls to 17% below the HPI. The line then continues to track at 17% below the HPI.

What might 21 MOUNT STREET be worth now?

21 MOUNT STREET might now be worth an estimated £192,205.

This is based on house price inflation of 36.3%, between September 2007 and July 2025, for terraced houses, in the Cornwall local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 36.3% inflationary increase is applied to the most recent sale price for 21 MOUNT STREET of £141,000 on 14th September 2007. For the value to have increased from £141,000 to £192,205 over the eighteen years and two months to July 2025, the following assumptions must hold true:

• The value of 21 MOUNT STREET has moved in line with the HPI for terraced houses in the Cornwall local authority area.
• The September 2007 sale price of £141,000 represented a fair market value for the property.
• The size, condition, and specification of 21 MOUNT STREET has not materially changed since September 2007.

How Large is 21 MOUNT STREET?

21 MOUNT STREET is 65m², which includes two extensions, according to the EPC inspection conducted in December 2021. This puts it in the smallest 10% of terraced houses houses in Penzance, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Penzance, and where 21 MOUNT STREET lies on this distribution: 6% of terraced houses houses are smaller than 21 MOUNT STREET, and 93% of houses are larger. Note that EPC data is not available for all properties in Penzance.

21 MOUNT STREET: Plot and Title Map

21 MOUNT STREET sits on a plot of roughly 0.020 of an acre, or 79m². The below map shows the location of 21 MOUNT STREET, 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 21 MOUNT STREET). 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 21 MOUNT STREET?

21 MOUNT STREET is located in PENZANCE, in the TR18 postcode district. The below map shows the position of No. 21 on MOUNT STREET.