15, NANT TWYN HARRIS, YSTRAD MYNACH, HENGOED, CF82 7DG - £340,000

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

15 NANT TWYN HARRIS is a small detached house of 101m², built sometime between 1991 and 1995, which could now be worth an estimated £364,311. It was last sold for £340,000 in August 2023, which was around 18% above the average August 2023 detached price in the Caerphilly local authority area. The most recent EPC inspection was April 2019, where the current energy rating was C, and the potential energy rating was B.

15 NANT TWYN HARRIS Sold Prices

Land registry data shows four sales for 15 NANT TWYN HARRIS since 1^st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the Caerphilly local authority area for the corresponding sale date. All of the four 15 NANT TWYN HARRIS 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
2023 16 AUG	£340,000	£288,878	18% above HPI
2019 19 AUG	£249,950	£218,911	14% above HPI
2004 14 AUG	£187,500	£151,699	24% above HPI
1997 29 AUG	£83,995	£67,957	24% above HPI

15 NANT TWYN HARRIS Price Paid vs. HPI Average

The below graph shows the average detached house price in the Caerphilly local authority area over time, sourced from the HPI. The four 15 NANT TWYN HARRIS sales between August 1997 and August 2023 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 2019 sale was for 14% above the HPI. So the extrapolation line tracks at 14% above the HPI over time, until the August 2023 sale, where it rises to 18% above the HPI. The line then continues to track at 18% above the HPI.

What might 15 NANT TWYN HARRIS be worth now?

15 NANT TWYN HARRIS might now be worth an estimated £364,311.

This is based on house price inflation of 7.2%, between August 2023 and December 2024, for detached houses, in the Caerphilly local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 7.2% inflationary increase is applied to the most recent sale price for 15 NANT TWYN HARRIS of £340,000 on 16th August 2023. For the value to have increased from £340,000 to £364,311 over the eight months to December 2024, the following assumptions must hold true:

• The value of 15 NANT TWYN HARRIS has moved in line with the HPI for detached houses in the Caerphilly local authority area.
• The August 2023 sale price of £340,000 represented a fair market value for the property.
• The size, condition, and specification of 15 NANT TWYN HARRIS has not materially changed since August 2023.

How Large is 15 NANT TWYN HARRIS?

15 NANT TWYN HARRIS is 101m² according to the EPC inspection conducted in April 2019. This puts it in the smallest 40% of detached houses houses in Ystrad Mynach, based on EPC data. The below chart shows the distribution of detached houses houses by size in Ystrad Mynach, and where 15 NANT TWYN HARRIS lies on this distribution: 39% of detached houses houses are smaller than 15 NANT TWYN HARRIS, and 60% of houses are larger. Note that EPC data is not available for all properties in Ystrad Mynach.

15 NANT TWYN HARRIS: Plot and Title Map

15 NANT TWYN HARRIS sits on a plot of roughly 0.071 of an acre, or 286m². The below map shows the location of 15 NANT TWYN HARRIS, 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 15 NANT TWYN HARRIS). 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 15 NANT TWYN HARRIS?

15 NANT TWYN HARRIS is located in YSTRAD MYNACH, in the CF82 postcode district. The below map shows the position of No. 15 on NANT TWYN HARRIS.