18, CARNSEW CLOSE, MABE BURNTHOUSE, PENRYN, TR10 9HE - £336,000

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

18 CARNSEW CLOSE is a very large extended detached house of 142m², built sometime between 1967 and 1975, which could now be worth an estimated £467,010. It was last sold for £336,000 in March 2017, which was around 7% above the average March 2017 detached price in the Cornwall local authority area. The most recent EPC inspection was August 2016, where the current energy rating was C, and the potential energy rating was C.

18 CARNSEW CLOSE Sold Prices

Land registry data shows two sales for 18 CARNSEW CLOSE since 1^st 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 18 CARNSEW CLOSE 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
2017 23 MAR	£336,000	£314,575	7% above HPI
2008 23 OCT	£230,000	£284,720	19% below HPI

18 CARNSEW CLOSE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Cornwall local authority area over time, sourced from the HPI. The two 18 CARNSEW CLOSE sales from October 2008 and March 2017 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 2008 sale was for 19% below the HPI. So the extrapolation line tracks at 19% below the HPI over time, until the March 2017 sale, where it rises to 7% above the HPI. The line then continues to track at 7% above the HPI.

What might 18 CARNSEW CLOSE be worth now?

18 CARNSEW CLOSE might now be worth an estimated £467,010.

This is based on house price inflation of 39%, between March 2017 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 39% inflationary increase is applied to the most recent sale price for 18 CARNSEW CLOSE of £336,000 on 23rd March 2017. For the value to have increased from £336,000 to £467,010 over the eight years and one month to February 2025, the following assumptions must hold true:

• The value of 18 CARNSEW CLOSE has moved in line with the HPI for detached houses in the Cornwall local authority area.
• The March 2017 sale price of £336,000 represented a fair market value for the property.
• The size, condition, and specification of 18 CARNSEW CLOSE has not materially changed since March 2017.

How Large is 18 CARNSEW CLOSE?

18 CARNSEW CLOSE is 142m², which includes one extension, according to the EPC inspection conducted in August 2016. This puts it in the largest 20% of detached houses houses in Mabe Burnthouse, based on EPC data. The below chart shows the distribution of detached houses houses by size in Mabe Burnthouse, and where 18 CARNSEW CLOSE lies on this distribution: 88% of detached houses houses are smaller than 18 CARNSEW CLOSE, and 12% of houses are larger. Note that EPC data is not available for all properties in Mabe Burnthouse.

18 CARNSEW CLOSE: Plot and Title Map

18 CARNSEW CLOSE sits on a plot of roughly 0.113 of an acre, or 458m². The below map shows the location of 18 CARNSEW CLOSE, 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 18 CARNSEW CLOSE). 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 18 CARNSEW CLOSE?

18 CARNSEW CLOSE is located in MABE BURNTHOUSE, in the TR10 postcode district. The below map shows the position of No. 18 on CARNSEW CLOSE.