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.
18 LLWYN MALLT is a small extended detached house of 112m², built sometime between 1991 and 1995, which could now be worth an estimated £398,084. It was last sold for £224,950 in May 2007, which was around 24% below the average May 2007 detached price in the Cardiff local authority area. The most recent EPC inspection was June 2016, where the current energy rating was E, and the potential energy rating was B.
Land registry data shows two sales for 18 LLWYN MALLT since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Cardiff local authority area for the corresponding sale date. Both of the two 18 LLWYN MALLT sales were for below 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 11 MAY | £224,950 | £295,384 | ![]() 24% below HPI |
2000 11 AUG | £92,631 | £141,814 | ![]() 35% below HPI |
The below graph shows the average detached house price in the Cardiff local authority area over time, sourced from the HPI. The two 18 LLWYN MALLT sales from August 2000 and May 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 August 2000 sale was for 35% below the HPI. So the extrapolation line tracks at 35% below the HPI over time, until the May 2007 sale, where it rises to 24% below the HPI. The line then continues to track at 24% below the HPI.
18 LLWYN MALLT might now be worth an estimated £398,084.
This is based on house price inflation of 77%, between May 2007 and February 2025, for detached houses, in the Cardiff local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 77% inflationary increase is applied to the most recent sale price for 18 LLWYN MALLT of £224,950 on 11th May 2007. For the value to have increased from £224,950 to £398,084 over the eighteen years and three months to February 2025, the following assumptions must hold true:
18 LLWYN MALLT is 112m², which includes one extension, according to the EPC inspection conducted in June 2016. This puts it in the smallest 40% of detached houses houses in Tongwynlais, based on EPC data. The below chart shows the distribution of detached houses houses by size in Tongwynlais, and where 18 LLWYN MALLT lies on this distribution: 39% of detached houses houses are smaller than 18 LLWYN MALLT, and 58% of houses are larger. Note that EPC data is not available for all properties in Tongwynlais.
18 LLWYN MALLT sits on a plot of roughly 0.074 of an acre, or 298m². The below map shows the location of 18 LLWYN MALLT, 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 18 LLWYN MALLT). 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.
18 LLWYN MALLT is located in TONGWYNLAIS, in the CF15 postcode district. The below map shows the position of No. 18 on LLWYN MALLT.
Most recent sales first: