The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.
31 MILLFIELD is a midsized extended semi-detached house of 124m², built sometime between 1996 and 2002, which could now be worth an estimated £332,836. It was last sold for £69,500 in May 1999, which was around 122% above the average May 1999 semi-detached price in the Merthyr Tydfil local authority area. The most recent EPC inspection was November 2025, where the current energy rating was C, and the potential energy rating was C.
Land registry data shows two sales for 31 MILLFIELD since 1st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Merthyr Tydfil local authority area for the corresponding sale date. Both of the two 31 MILLFIELD 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 |
|---|---|---|---|
1999 14 MAY | £69,500 | £31,237 | 122% above HPI |
1995 6 SEP | £64,000 | £29,684 | 116% above HPI |
The below graph shows the average semi-detached house price in the Merthyr Tydfil local authority area over time, sourced from the HPI. The two 31 MILLFIELD sales from September 1995 and May 1999 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 1995 sale was for 116% above the HPI. So the extrapolation line tracks at 116% above the HPI over time, until the May 1999 sale, where it rises to 122% above the HPI. The line then continues to track at 122% above the HPI.

31 MILLFIELD might now be worth an estimated £332,836.
This is based on house price inflation of 378.9%, between May 1999 and April 2026, for semi-detached houses, in the Merthyr Tydfil local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 378.9% inflationary increase is applied to the most recent sale price for 31 MILLFIELD of £69,500 on 14th May 1999. For the value to have increased from £69,500 to £332,836 over the 27 years and one month to April 2026, the following assumptions must hold true:
31 MILLFIELD is 124m², which includes one extension, according to the EPC inspection conducted in November 2025. This puts it in the largest 50% of semi-detached houses houses in Treharris, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Treharris, and where 31 MILLFIELD lies on this distribution: 55% of semi-detached houses houses are smaller than 31 MILLFIELD, and 44% of houses are larger. Note that EPC data is not available for all properties in Treharris.

31 MILLFIELD sits on a plot of roughly 0.089 of an acre, or 361m². The below map shows the location of 31 MILLFIELD, 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 31 MILLFIELD). 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.

31 MILLFIELD is located in QUAKERS YARD, in the CF46 postcode district. The below map shows the position of No. 31 on MILLFIELD.

Most recent sales first: