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
SONLEA is a very large detached house of 217m², built sometime between 1950 and 1966, which could now be worth an estimated £729,597. It was last sold for £570,000 in October 2018, which was around 67% above the average October 2018 detached price in the Cornwall local authority area. The most recent EPC inspection was January 2018, where the current energy rating was C, and the potential energy rating was B.
Land registry data shows two sales for SONLEA since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Cornwall local authority area for the corresponding sale date. One of the two SONLEA sales was for above the average price, whilst the other was 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 |
---|---|---|---|
2018 23 OCT | £570,000 | £341,588 | ![]() 67% above HPI |
2013 24 MAY | £227,250 | £273,052 | ![]() 17% below HPI |
The below graph shows the average detached house price in the Cornwall local authority area over time, sourced from the HPI. The two SONLEA sales from May 2013 and October 2018 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 2013 sale was for 17% below the HPI. So the extrapolation line tracks at 17% below the HPI over time, until the October 2018 sale, where it rises to 67% above the HPI. The line then continues to track at 67% above the HPI.
SONLEA might now be worth an estimated £729,597.
This is based on house price inflation of 28%, between October 2018 and February 2025, for detached 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 28% inflationary increase is applied to the most recent sale price for SONLEA of £570,000 on 23rd October 2018. For the value to have increased from £570,000 to £729,597 over the seven years and eight months to February 2025, the following assumptions must hold true:
SONLEA is 217m² according to the EPC inspection conducted in January 2018. This puts it in the largest 10% of detached houses houses in Carnon Downs, based on EPC data. The below chart shows the distribution of detached houses houses by size in Carnon Downs, and where SONLEA lies on this distribution: 96% of detached houses houses are smaller than SONLEA, and 4% of houses are larger. Note that EPC data is not available for all properties in Carnon Downs.
SONLEA sits on a plot of roughly 5.3 acres, or 21,468m². The below map shows the location of SONLEA, 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 SONLEA). 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.
SONLEA is located on BISSOE ROAD in CARNON DOWNS, in the TR3 postcode district. The below map shows the position of SONLEA on BISSOE ROAD.
Most recent sales first: