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.
23 LEWIS STREET is a small extended semi-detached house of 91m², built sometime between 1900 and 1929, which could now be worth an estimated £271,135. It was last sold for £59,950 in November 1999, which was around 37% above the average November 1999 semi-detached price in the Caerphilly local authority area. The most recent EPC inspection was November 2010, where the current energy rating was D, and the potential energy rating was D.
Land registry data shows two sales for 23 LEWIS STREET since 1st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Caerphilly local authority area for the corresponding sale date. Both of the two 23 LEWIS STREET 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 12 NOV | £59,950 | £43,613 | ![]() 37% above HPI |
1996 4 OCT | £54,500 | £39,592 | ![]() 38% above HPI |
The below graph shows the average semi-detached house price in the Caerphilly local authority area over time, sourced from the HPI. The two 23 LEWIS STREET sales from October 1996 and November 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 October 1996 sale was for 38% above the HPI. So the extrapolation line tracks at 38% above the HPI over time, until the November 1999 sale, where it falls to 37% above the HPI. The line then continues to track at 37% above the HPI.
23 LEWIS STREET might now be worth an estimated £271,135.
This is based on house price inflation of 352.3%, between November 1999 and February 2025, for semi-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 352.3% inflationary increase is applied to the most recent sale price for 23 LEWIS STREET of £59,950 on 12th November 1999. For the value to have increased from £59,950 to £271,135 over the 26 years and nine months to February 2025, the following assumptions must hold true:
23 LEWIS STREET is 91m², which includes one extension, according to the EPC inspection conducted in November 2010. This puts it in the smallest 30% of semi-detached houses houses in Ystrad Mynach, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Ystrad Mynach, and where 23 LEWIS STREET lies on this distribution: 25% of semi-detached houses houses are smaller than 23 LEWIS STREET, and 75% of houses are larger. Note that EPC data is not available for all properties in Ystrad Mynach.
23 LEWIS STREET sits on a plot of roughly 0.045 of an acre, or 182m². The below map shows the location of 23 LEWIS STREET, 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 23 LEWIS STREET). 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.
23 LEWIS STREET is located in YSTRAD MYNACH, in the CF82 postcode district. The below map shows the position of No. 23 on LEWIS STREET.
Most recent sales first: