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.
40 LEWIS STREET is a very large detached house of 139m², built sometime between 1900 and 1929, which could now be worth an estimated £230,046. It was last sold for £120,000 in November 2010, which was around 26% below the average November 2010 detached price in the Caerphilly local authority area. The most recent EPC inspection was June 2010, where the current energy rating was D, and the potential energy rating was D.
Land registry data shows two sales for 40 LEWIS STREET since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Caerphilly local authority area for the corresponding sale date. One of the two 40 LEWIS STREET 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 |
---|---|---|---|
2010 25 NOV | £120,000 | £162,150 | ![]() 26% below HPI |
2006 30 JUN | £175,000 | £172,127 | ![]() 2% above HPI |
The below graph shows the average detached house price in the Caerphilly local authority area over time, sourced from the HPI. The two 40 LEWIS STREET sales from June 2006 and November 2010 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 June 2006 sale was for 2% above the HPI. So the extrapolation line tracks at 2% above the HPI over time, until the November 2010 sale, where it falls to 26% below the HPI. The line then continues to track at 26% below the HPI.
40 LEWIS STREET might now be worth an estimated £230,046.
This is based on house price inflation of 91.7%, between November 2010 and February 2025, for 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 91.7% inflationary increase is applied to the most recent sale price for 40 LEWIS STREET of £120,000 on 25th November 2010. For the value to have increased from £120,000 to £230,046 over the fifteen years and nine months to February 2025, the following assumptions must hold true:
40 LEWIS STREET is 139m² according to the EPC inspection conducted in June 2010. This puts it in the largest 20% of detached houses houses in Ystrad Mynach, based on EPC data. The below chart shows the distribution of detached houses houses by size in Ystrad Mynach, and where 40 LEWIS STREET lies on this distribution: 84% of detached houses houses are smaller than 40 LEWIS STREET, and 16% of houses are larger. Note that EPC data is not available for all properties in Ystrad Mynach.
40 LEWIS STREET sits on a plot of roughly 0.037 of an acre, or 151m². The below map shows the location of 40 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 40 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.
40 LEWIS STREET is located in YSTRAD MYNACH, in the CF82 postcode district. The below map shows the position of No. 40 on LEWIS STREET.
Most recent sales first: