17, SWISS VALLEY, LLANELLI, SA14 8BS - £500,000

Based on the January 2025 Price Paid Data (released on 3rd March 2025), the December 2024 House Price Index (released on 19th February 2025), and the January 2025 Energy Performance of Buildings Data (released on 27th February 2025). Sources

17 SWISS VALLEY is a very large extended detached house of 272m², built sometime between 1930 and 1949, which could now be worth an estimated £833,015. It was last sold for £500,000 in December 2011, which was around 201% above the average December 2011 detached price in the Carmarthenshire local authority area. The most recent EPC inspection was September 2011, where the current energy rating was C, and the potential energy rating was C.

17 SWISS VALLEY Sold Prices

Land registry data shows two sales for 17 SWISS VALLEY since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Carmarthenshire local authority area for the corresponding sale date. Both of the two 17 SWISS VALLEY 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
2011 2 DEC	£500,000	£165,913	201% above HPI
2003 22 AUG	£284,000	£110,742	156% above HPI

17 SWISS VALLEY Price Paid vs. HPI Average

The below graph shows the average detached house price in the Carmarthenshire local authority area over time, sourced from the HPI. The two 17 SWISS VALLEY sales from August 2003 and December 2011 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 2003 sale was for 156% above the HPI. So the extrapolation line tracks at 156% above the HPI over time, until the December 2011 sale, where it rises to 201% above the HPI. The line then continues to track at 201% above the HPI.

What might 17 SWISS VALLEY be worth now?

17 SWISS VALLEY might now be worth an estimated £833,015.

This is based on house price inflation of 66.6%, between December 2011 and February 2025, for detached houses, in the Carmarthenshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 66.6% inflationary increase is applied to the most recent sale price for 17 SWISS VALLEY of £500,000 on 2nd December 2011. For the value to have increased from £500,000 to £833,015 over the fourteen years and ten months to February 2025, the following assumptions must hold true:

• The value of 17 SWISS VALLEY has moved in line with the HPI for detached houses in the Carmarthenshire local authority area.
• The December 2011 sale price of £500,000 represented a fair market value for the property.
• The size, condition, and specification of 17 SWISS VALLEY has not materially changed since December 2011.

How Large is 17 SWISS VALLEY?

17 SWISS VALLEY is 272m², which includes two extensions, according to the EPC inspection conducted in September 2011. This puts it in the largest 10% of detached houses houses in Llanelli, based on EPC data. The below chart shows the distribution of detached houses houses by size in Llanelli, and where 17 SWISS VALLEY lies on this distribution: 97% of detached houses houses are smaller than 17 SWISS VALLEY, and 3% of houses are larger. Note that EPC data is not available for all properties in Llanelli.

17 SWISS VALLEY: Plot and Title Map

17 SWISS VALLEY sits on a plot of roughly 0.942 of an acre, or 3,813m². The below map shows the location of 17 SWISS VALLEY, 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 17 SWISS VALLEY). 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 17 SWISS VALLEY?

17 SWISS VALLEY is located in LLANELLI, in the SA14 postcode district. The below map shows the position of No. 17 on SWISS VALLEY.