14, GRAIG Y MYNYDD, THOMASTOWN, PORTH, CF39 8FD - £175,000

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

14 GRAIG Y MYNYDD is a very large extended detached house of 154m², built sometime between 2003 and 2006, which could now be worth an estimated £322,231. It was last sold for £175,000 in July 2011, which was around 21% above the average July 2011 detached price in the Rhondda Cynon Taf local authority area. The most recent EPC inspection was June 2022, where the current energy rating was C, and the potential energy rating was B.

14 GRAIG Y MYNYDD Sold Prices

Land registry data shows two sales for 14 GRAIG Y MYNYDD since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Rhondda Cynon Taf local authority area for the corresponding sale date. Both of the two 14 GRAIG Y MYNYDD 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
2011 8 JUL	£175,000	£145,087	21% above HPI
2000 1 SEP	£75,950	£62,422	22% above HPI

14 GRAIG Y MYNYDD Price Paid vs. HPI Average

The below graph shows the average detached house price in the Rhondda Cynon Taf local authority area over time, sourced from the HPI. The two 14 GRAIG Y MYNYDD sales from September 2000 and July 2011 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 September 2000 sale was for 22% above the HPI. So the extrapolation line tracks at 22% above the HPI over time, until the July 2011 sale, where it falls to 21% above the HPI. The line then continues to track at 21% above the HPI.

What might 14 GRAIG Y MYNYDD be worth now?

14 GRAIG Y MYNYDD might now be worth an estimated £322,231.

This is based on house price inflation of 84.1%, between July 2011 and February 2025, for detached houses, in the Rhondda Cynon Taf local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 84.1% inflationary increase is applied to the most recent sale price for 14 GRAIG Y MYNYDD of £175,000 on 8th July 2011. For the value to have increased from £175,000 to £322,231 over the fourteen years and five months to February 2025, the following assumptions must hold true:

• The value of 14 GRAIG Y MYNYDD has moved in line with the HPI for detached houses in the Rhondda Cynon Taf local authority area.
• The July 2011 sale price of £175,000 represented a fair market value for the property.
• The size, condition, and specification of 14 GRAIG Y MYNYDD has not materially changed since July 2011.

How Large is 14 GRAIG Y MYNYDD?

14 GRAIG Y MYNYDD is 154m², which includes two extensions, according to the EPC inspection conducted in June 2022. This puts it in the largest 10% of detached houses houses in Tonyrefail, based on EPC data. The below chart shows the distribution of detached houses houses by size in Tonyrefail, and where 14 GRAIG Y MYNYDD lies on this distribution: 92% of detached houses houses are smaller than 14 GRAIG Y MYNYDD, and 8% of houses are larger. Note that EPC data is not available for all properties in Tonyrefail.

14 GRAIG Y MYNYDD: Plot and Title Map

14 GRAIG Y MYNYDD sits on a plot of roughly 0.061 of an acre, or 245m². The below map shows the location of 14 GRAIG Y MYNYDD, 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 14 GRAIG Y MYNYDD). 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 14 GRAIG Y MYNYDD?

14 GRAIG Y MYNYDD is located in THOMASTOWN, in the CF39 postcode district. The below map shows the position of No. 14 on GRAIG Y MYNYDD.