12, MOSTYN SQUARE, LLANISHEN, CARDIFF, CF14 5FE - £226,500

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.

12 MOSTYN SQUARE is a small terraced house of 103m², built sometime from 2007 onwards, which could now be worth an estimated £324,774. It was last sold for £226,500 in July 2017, which was around 27% above the average July 2017 terraced price in the Cardiff local authority area. The most recent EPC inspection was November 2019, where the current energy rating was C, and the potential energy rating was B.

12 MOSTYN SQUARE Sold Prices

Land registry data shows two sales for 12 MOSTYN SQUARE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average terraced price in the Cardiff local authority area for the corresponding sale date. Both of the two 12 MOSTYN SQUARE 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
2017 21 JUL	£226,500	£178,508	27% above HPI
2009 17 JUL	£182,000	£132,331	38% above HPI

12 MOSTYN SQUARE Price Paid vs. HPI Average

The below graph shows the average terraced house price in the Cardiff local authority area over time, sourced from the HPI. The two 12 MOSTYN SQUARE sales from July 2009 and July 2017 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 July 2009 sale was for 38% above the HPI. So the extrapolation line tracks at 38% above the HPI over time, until the July 2017 sale, where it falls to 27% above the HPI. The line then continues to track at 27% above the HPI.

What might 12 MOSTYN SQUARE be worth now?

12 MOSTYN SQUARE might now be worth an estimated £324,774.

This is based on house price inflation of 43.4%, between July 2017 and June 2025, for terraced 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 43.4% inflationary increase is applied to the most recent sale price for 12 MOSTYN SQUARE of £226,500 on 21st July 2017. For the value to have increased from £226,500 to £324,774 over the eight years and one month to June 2025, the following assumptions must hold true:

• The value of 12 MOSTYN SQUARE has moved in line with the HPI for terraced houses in the Cardiff local authority area.
• The July 2017 sale price of £226,500 represented a fair market value for the property.
• The size, condition, and specification of 12 MOSTYN SQUARE has not materially changed since July 2017.

How Large is 12 MOSTYN SQUARE?

12 MOSTYN SQUARE is 103m² according to the EPC inspection conducted in November 2019. This puts it in the smallest 30% of terraced houses houses in Cardiff, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Cardiff, and where 12 MOSTYN SQUARE lies on this distribution: 30% of terraced houses houses are smaller than 12 MOSTYN SQUARE, and 70% of houses are larger. Note that EPC data is not available for all properties in Cardiff.

12 MOSTYN SQUARE: Plot and Title Map

12 MOSTYN SQUARE sits on a plot of roughly 0.025 of an acre, or 103m². The below map shows the location of 12 MOSTYN SQUARE, 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 12 MOSTYN SQUARE). 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.

Where is 12 MOSTYN SQUARE?

12 MOSTYN SQUARE is located in LLANISHEN, in the CF14 postcode district. The below map shows the position of No. 12 on MOSTYN SQUARE.