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.
13 LLYS STEFFAN is a large extended detached house of 129m², built sometime between 1991 and 1995, which could now be worth an estimated £535,048. It was last sold for £129,950 in December 1999, which was around 4% above the average December 1999 detached price in the Vale of Glamorgan local authority area. The most recent EPC inspection was November 2011, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows two sales for 13 LLYS STEFFAN since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Vale of Glamorgan local authority area for the corresponding sale date. One of the two 13 LLYS STEFFAN sales was for above the average price, whilst the other was 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 |
|---|---|---|---|
1999 10 DEC | £129,950 | £124,739 | 4% above HPI |
1996 21 OCT | £94,250 | £100,889 | 7% below HPI |
The below graph shows the average detached house price in the Vale of Glamorgan local authority area over time, sourced from the HPI. The two 13 LLYS STEFFAN sales from October 1996 and December 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 7% below the HPI. So the extrapolation line tracks at 7% below the HPI over time, until the December 1999 sale, where it rises to 4% above the HPI. The line then continues to track at 4% above the HPI.

13 LLYS STEFFAN might now be worth an estimated £535,048.
This is based on house price inflation of 311.7%, between December 1999 and August 2025, for detached houses, in the Vale of Glamorgan local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 311.7% inflationary increase is applied to the most recent sale price for 13 LLYS STEFFAN of £129,950 on 10th December 1999. For the value to have increased from £129,950 to £535,048 over the 26 years and four months to August 2025, the following assumptions must hold true:
13 LLYS STEFFAN is 129m², which includes three extensions, according to the EPC inspection conducted in November 2011. This puts it in the largest 40% of detached houses houses in Llantwit Major, based on EPC data. The below chart shows the distribution of detached houses houses by size in Llantwit Major, and where 13 LLYS STEFFAN lies on this distribution: 69% of detached houses houses are smaller than 13 LLYS STEFFAN, and 31% of houses are larger. Note that EPC data is not available for all properties in Llantwit Major.

13 LLYS STEFFAN sits on a plot of roughly 0.105 of an acre, or 423m². The below map shows the location of 13 LLYS STEFFAN, 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 13 LLYS STEFFAN). 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.

13 LLYS STEFFAN is located in LLANTWIT MAJOR, in the CF61 postcode district. The below map shows the position of No. 13 on LLYS STEFFAN.

Most recent sales first: