17, YNYS WERDD, PENLLERGAER, SWANSEA, SA4 9AR - £310,000

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.

17 YNYS WERDD is a small detached house of 99m², built sometime between 1976 and 1982, which could now be worth an estimated £313,609. It was last sold for £310,000 in May 2025, which was around 5% below the average May 2025 detached price in the Swansea local authority area. The most recent EPC inspection was August 2022, where the current energy rating was C, and the potential energy rating was B.

17 YNYS WERDD Sold Prices

Land registry data shows three sales for 17 YNYS WERDD since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Swansea local authority area for the corresponding sale date. Two of the three 17 YNYS WERDD sales were for below the average price, whilst one was 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
2025 30 MAY	£310,000	£326,387	5% below HPI
2023 26 SEP	£325,000	£315,101	3% above HPI
1995 6 NOV	£67,500	£71,018	5% below HPI

17 YNYS WERDD Price Paid vs. HPI Average

The below graph shows the average detached house price in the Swansea local authority area over time, sourced from the HPI. The three 17 YNYS WERDD sales between November 1995 and May 2025 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 September 2023 sale was for 3% above the HPI. So the extrapolation line tracks at 3% above the HPI over time, until the May 2025 sale, where it falls to 5% below the HPI. The line then continues to track at 5% below the HPI.

What might 17 YNYS WERDD be worth now?

17 YNYS WERDD might now be worth an estimated £313,609.

This is based on house price inflation of 1.2%, between May 2025 and April 2026, for detached houses, in the Swansea local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 1.2% inflationary increase is applied to the most recent sale price for 17 YNYS WERDD of £310,000 on 30th May 2025. For the value to have increased from £310,000 to £313,609 over the one year and one month to April 2026, the following assumptions must hold true:

• The value of 17 YNYS WERDD has moved in line with the HPI for detached houses in the Swansea local authority area.
• The May 2025 sale price of £310,000 represented a fair market value for the property.
• The size, condition, and specification of 17 YNYS WERDD has not materially changed since May 2025.

How Large is 17 YNYS WERDD?

17 YNYS WERDD is 99m² according to the EPC inspection conducted in August 2022. This puts it in the smallest 30% of detached houses houses in Penllergaer, based on EPC data. The below chart shows the distribution of detached houses houses by size in Penllergaer, and where 17 YNYS WERDD lies on this distribution: 27% of detached houses houses are smaller than 17 YNYS WERDD, and 73% of houses are larger. Note that EPC data is not available for all properties in Penllergaer.

17 YNYS WERDD: Plot and Title Map

17 YNYS WERDD sits on a plot of roughly 0.128 of an acre, or 519m². The below map shows the location of 17 YNYS WERDD, 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 YNYS WERDD). 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 YNYS WERDD?

17 YNYS WERDD is located in PENLLERGAER, in the SA4 postcode district. The below map shows the position of No. 17 on YNYS WERDD.