41, DERWEN ROAD, ALLTWEN, SWANSEA, SA8 3AU - £365,000

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

41 DERWEN ROAD is a very large detached house of 155m², built sometime between 1930 and 1949, which could now be worth an estimated £548,874. It was last sold for £365,000 in September 2017, which was around 122% above the average September 2017 detached price in the Neath Port Talbot local authority area. The most recent EPC inspection was July 2015, where the current energy rating was D, and the potential energy rating was C.

41 DERWEN ROAD Sold Prices

Land registry data shows two sales for 41 DERWEN ROAD since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Neath Port Talbot local authority area for the corresponding sale date. Both of the two 41 DERWEN ROAD 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 28 SEP	£365,000	£164,291	122% above HPI
2003 27 OCT	£198,000	£93,765	111% above HPI

41 DERWEN ROAD Price Paid vs. HPI Average

The below graph shows the average detached house price in the Neath Port Talbot local authority area over time, sourced from the HPI. The two 41 DERWEN ROAD sales from October 2003 and September 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 October 2003 sale was for 111% above the HPI. So the extrapolation line tracks at 111% above the HPI over time, until the September 2017 sale, where it rises to 122% above the HPI. The line then continues to track at 122% above the HPI.

What might 41 DERWEN ROAD be worth now?

41 DERWEN ROAD might now be worth an estimated £548,874.

This is based on house price inflation of 50.4%, between September 2017 and December 2024, for 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 50.4% inflationary increase is applied to the most recent sale price for 41 DERWEN ROAD of £365,000 on 28th September 2017. For the value to have increased from £365,000 to £548,874 over the six years and nine months to December 2024, the following assumptions must hold true:

• The value of 41 DERWEN ROAD has moved in line with the HPI for detached houses in the Neath Port Talbot local authority area.
• The September 2017 sale price of £365,000 represented a fair market value for the property.
• The size, condition, and specification of 41 DERWEN ROAD has not materially changed since September 2017.

How Large is 41 DERWEN ROAD?

41 DERWEN ROAD is 155m² according to the EPC inspection conducted in July 2015. This puts it in the largest 20% of detached houses houses in Alltwen, based on EPC data. The below chart shows the distribution of detached houses houses by size in Alltwen, and where 41 DERWEN ROAD lies on this distribution: 86% of detached houses houses are smaller than 41 DERWEN ROAD, and 14% of houses are larger. Note that EPC data is not available for all properties in Alltwen.

41 DERWEN ROAD: Plot and Title Map

41 DERWEN ROAD sits on a plot of roughly 0.286 of an acre, or 1,156m². The below map shows the location of 41 DERWEN ROAD, 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 41 DERWEN ROAD). 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 41 DERWEN ROAD?

41 DERWEN ROAD is located in ALLTWEN, in the SA8 postcode district. The below map shows the position of No. 41 on DERWEN ROAD.