GWYNFI, Y DERWYDD, DERWYDD, BURRY PORT, SA16 0EY - £290,000

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

GWYNFI is a very large extended detached house of 178m², built sometime before 1900, which could now be worth an estimated £406,265. It was last sold for £290,000 in January 2019, which was around 47% above the average January 2019 detached price in the Carmarthenshire local authority area. The most recent EPC inspection was March 2018, where the current energy rating was D, and the potential energy rating was C.

GWYNFI Sold Prices

Land registry data shows two sales for GWYNFI 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 GWYNFI 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
2019 11 JAN	£290,000	£197,311	47% above HPI
2008 10 MAR	£280,000	£190,759	47% above HPI

GWYNFI 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 GWYNFI sales from March 2008 and January 2019 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 March 2008 sale was for 47% above the HPI. So the extrapolation line tracks at 47% above the HPI over time, until the January 2019 sale, which was also at 47% above the HPI.

What might GWYNFI be worth now?

GWYNFI might now be worth an estimated £406,265.

This is based on house price inflation of 40.1%, between January 2019 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 40.1% inflationary increase is applied to the most recent sale price for GWYNFI of £290,000 on 11th January 2019. For the value to have increased from £290,000 to £406,265 over the five years and eleven months to February 2025, the following assumptions must hold true:

• The value of GWYNFI has moved in line with the HPI for detached houses in the Carmarthenshire local authority area.
• The January 2019 sale price of £290,000 represented a fair market value for the property.
• The size, condition, and specification of GWYNFI has not materially changed since January 2019.

How Large is GWYNFI?

GWYNFI is 178m², which includes two extensions, according to the EPC inspection conducted in March 2018. This puts it in the largest 20% of detached houses houses in Burry Port, based on EPC data. The below chart shows the distribution of detached houses houses by size in Burry Port, and where GWYNFI lies on this distribution: 88% of detached houses houses are smaller than GWYNFI, and 12% of houses are larger. Note that EPC data is not available for all properties in Burry Port.

GWYNFI: Plot and Title Map

GWYNFI sits on a plot of roughly 0.220 of an acre, or 892m². The below map shows the location of GWYNFI, 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 GWYNFI). 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 GWYNFI?

GWYNFI is located on Y DERWYDD in DERWYDD, in the SA16 postcode district. The below map shows the position of GWYNFI on Y DERWYDD.