5, MYNYDD Y SEREN, THOMASTOWN, PORTH, CF39 8ET - £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

5 MYNYDD Y SEREN is a very large extended detached house of 140m², built sometime between 1996 and 2002, which could now be worth an estimated £478,807. It was last sold for £340,000 in June 2019, which was around 79% above the average June 2019 detached price in the Rhondda Cynon Taf local authority area. The most recent EPC inspection was May 2019, where the current energy rating was D, and the potential energy rating was C.

5 MYNYDD Y SEREN Sold Prices

Land registry data shows two sales for 5 MYNYDD Y SEREN 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 5 MYNYDD Y SEREN 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
2019 14 JUN	£340,000	£189,704	79% above HPI
1997 31 OCT	£91,950	£57,930	59% above HPI

5 MYNYDD Y SEREN 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 5 MYNYDD Y SEREN sales from October 1997 and June 2019 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 1997 sale was for 59% above the HPI. So the extrapolation line tracks at 59% above the HPI over time, until the June 2019 sale, where it rises to 79% above the HPI. The line then continues to track at 79% above the HPI.

What might 5 MYNYDD Y SEREN be worth now?

5 MYNYDD Y SEREN might now be worth an estimated £478,807.

This is based on house price inflation of 40.8%, between June 2019 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 40.8% inflationary increase is applied to the most recent sale price for 5 MYNYDD Y SEREN of £340,000 on 14th June 2019. For the value to have increased from £340,000 to £478,807 over the six years and four months to February 2025, the following assumptions must hold true:

• The value of 5 MYNYDD Y SEREN has moved in line with the HPI for detached houses in the Rhondda Cynon Taf local authority area.
• The June 2019 sale price of £340,000 represented a fair market value for the property.
• The size, condition, and specification of 5 MYNYDD Y SEREN has not materially changed since June 2019.

How Large is 5 MYNYDD Y SEREN?

5 MYNYDD Y SEREN is 140m², which includes two extensions, according to the EPC inspection conducted in May 2019. This puts it in the largest 20% 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 5 MYNYDD Y SEREN lies on this distribution: 87% of detached houses houses are smaller than 5 MYNYDD Y SEREN, and 13% of houses are larger. Note that EPC data is not available for all properties in Tonyrefail.

5 MYNYDD Y SEREN: Plot and Title Map

5 MYNYDD Y SEREN sits on a plot of roughly 0.256 of an acre, or 1,038m². The below map shows the location of 5 MYNYDD Y SEREN, 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 5 MYNYDD Y SEREN). 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 5 MYNYDD Y SEREN?

5 MYNYDD Y SEREN is located in THOMASTOWN, in the CF39 postcode district. The below map shows the position of No. 5 on MYNYDD Y SEREN.