20, CASTLE STREET, SKEWEN, NEATH, SA10 6DA - £164,000

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

20 CASTLE STREET is a very small semi-detached house of 82m², built sometime between 1930 and 1949, which could now be worth an estimated £230,463. It was last sold for £164,000 in December 2019, which was around 43% above the average December 2019 semi-detached price in the Neath Port Talbot local authority area. The most recent EPC inspection was August 2017, where the current energy rating was D, and the potential energy rating was B.

20 CASTLE STREET Sold Prices

Land registry data shows two sales for 20 CASTLE STREET since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Neath Port Talbot local authority area for the corresponding sale date. Both of the two 20 CASTLE STREET 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 18 DEC	£164,000	£114,498	43% above HPI
2017 15 DEC	£136,000	£102,948	32% above HPI

20 CASTLE STREET Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Neath Port Talbot local authority area over time, sourced from the HPI. The two 20 CASTLE STREET sales from December 2017 and December 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 December 2017 sale was for 32% above the HPI. So the extrapolation line tracks at 32% above the HPI over time, until the December 2019 sale, where it rises to 43% above the HPI. The line then continues to track at 43% above the HPI.

What might 20 CASTLE STREET be worth now?

20 CASTLE STREET might now be worth an estimated £230,463.

This is based on house price inflation of 40.5%, between December 2019 and February 2025, for semi-detached houses, in the Neath Port Talbot local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 40.5% inflationary increase is applied to the most recent sale price for 20 CASTLE STREET of £164,000 on 18th December 2019. For the value to have increased from £164,000 to £230,463 over the six years and ten months to February 2025, the following assumptions must hold true:

• The value of 20 CASTLE STREET has moved in line with the HPI for semi-detached houses in the Neath Port Talbot local authority area.
• The December 2019 sale price of £164,000 represented a fair market value for the property.
• The size, condition, and specification of 20 CASTLE STREET has not materially changed since December 2019.

How Large is 20 CASTLE STREET?

20 CASTLE STREET is 82m² according to the EPC inspection conducted in August 2017. This puts it in the smallest 20% of semi-detached houses houses in Neath, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Neath, and where 20 CASTLE STREET lies on this distribution: 18% of semi-detached houses houses are smaller than 20 CASTLE STREET, and 81% of houses are larger. Note that EPC data is not available for all properties in Neath.

20 CASTLE STREET: Plot and Title Map

20 CASTLE STREET sits on a plot of roughly 0.128 of an acre, or 518m². The below map shows the location of 20 CASTLE STREET, 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 20 CASTLE STREET). 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 20 CASTLE STREET?

20 CASTLE STREET is located in SKEWEN, in the SA10 postcode district. The below map shows the position of No. 20 on CASTLE STREET.