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.
10 MOSTYN SQUARE is a very small semi-detached house of 41m², built in 2008, which could now be worth an estimated £419,392. It was last sold for £204,495 in June 2009, which was around 29% above the average June 2009 semi-detached price in the Cardiff local authority area. The most recent EPC inspection was September 2008, where the current energy rating was B, and the potential energy rating was B.
Land registry data shows one sale for 10 MOSTYN SQUARE since 1st January 1995. The below table shows the price paid for the one sale, along with the average semi-detached price in the Cardiff local authority area for the corresponding sale date. The average price is sourced from the Office for National Statistics' House Price Index (HPI).
| Date | Price | HPI Price | Variation from HPI |
|---|---|---|---|
2009 19 JUN | £204,495 | £158,401 | 29% above HPI |
10 MOSTYN SQUARE might now be worth an estimated £419,392.
This is based on house price inflation of 105.1%, between June 2009 and July 2026, for semi-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 105.1% inflationary increase is applied to the most recent sale price for 10 MOSTYN SQUARE of £204,495 on 19th June 2009. For the value to have increased from £204,495 to £419,392 over the sixteen years and eleven months to July 2026, the following assumptions must hold true:
10 MOSTYN SQUARE is 41m² according to the EPC inspection conducted in September 2008. This puts it in the smallest 10% of semi-detached houses in Cardiff, based on EPC data. The below chart shows the distribution of semi-detached houses by size in Cardiff, and where 10 MOSTYN SQUARE lies on this distribution: Less than 1% of semi-detached houses are smaller than 10 MOSTYN SQUARE, and more than 99% of semi-detached houses are larger. Note that EPC data is not available for all properties in Cardiff.

10 MOSTYN SQUARE sits on a plot of roughly 0.031 of an acre, or 127m².
10 MOSTYN SQUARE is located in LLANISHEN, in the CF14 postcode district.
Most recent sales first: