16, CWM ALARCH, MOUNTAIN ASH, CF45 3DR - £85,000

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

16 CWM ALARCH is a very small semi-detached house of 33m², built sometime between 1983 and 1990, which could now be worth an estimated £140,564. It was last sold for £85,000 in January 2007, which was around 14% below the average January 2007 semi-detached price in the Rhondda Cynon Taf local authority area. The most recent EPC inspection was July 2011, where the current energy rating was C, and the potential energy rating was C.

16 CWM ALARCH Sold Prices

Land registry data shows two sales for 16 CWM ALARCH since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Rhondda Cynon Taf local authority area for the corresponding sale date. One of the two 16 CWM ALARCH sales was for below the average price, whilst the other was 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
2007 31 JAN	£85,000	£99,387	14% below HPI
1999 15 OCT	£42,000	£37,353	12% above HPI

16 CWM ALARCH Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Rhondda Cynon Taf local authority area over time, sourced from the HPI. The two 16 CWM ALARCH sales from October 1999 and January 2007 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 1999 sale was for 12% above the HPI. So the extrapolation line tracks at 12% above the HPI over time, until the January 2007 sale, where it falls to 14% below the HPI. The line then continues to track at 14% below the HPI.

What might 16 CWM ALARCH be worth now?

16 CWM ALARCH might now be worth an estimated £140,564.

This is based on house price inflation of 65.4%, between January 2007 and February 2025, for semi-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 65.4% inflationary increase is applied to the most recent sale price for 16 CWM ALARCH of £85,000 on 31st January 2007. For the value to have increased from £85,000 to £140,564 over the seventeen years and eleven months to February 2025, the following assumptions must hold true:

• The value of 16 CWM ALARCH has moved in line with the HPI for semi-detached houses in the Rhondda Cynon Taf local authority area.
• The January 2007 sale price of £85,000 represented a fair market value for the property.
• The size, condition, and specification of 16 CWM ALARCH has not materially changed since January 2007.

How Large is 16 CWM ALARCH?

16 CWM ALARCH is 33m² according to the EPC inspection conducted in July 2011. This puts it in the smallest 10% of semi-detached houses houses in Mountain Ash, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Mountain Ash, and where 16 CWM ALARCH lies on this distribution: Less than 1% of semi-detached houses houses are smaller than 16 CWM ALARCH, and more than 99% of houses are larger. Note that EPC data is not available for all properties in Mountain Ash.

16 CWM ALARCH: Plot and Title Map

16 CWM ALARCH sits on a plot of roughly 0.033 of an acre, or 134m². The below map shows the location of 16 CWM ALARCH, 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 16 CWM ALARCH). 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 16 CWM ALARCH?

16 CWM ALARCH is located in MOUNTAIN ASH, in the CF45 postcode district. The below map shows the position of No. 16 on CWM ALARCH.