17, CWM GWYNLAIS, TONGWYNLAIS, CARDIFF, CF15 7HU - £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

17 CWM GWYNLAIS is a midsized extended detached house of 123m², built sometime between 1983 and 1990, which could now be worth an estimated £437,217. It was last sold for £365,000 in June 2021, which was around 16% below the average June 2021 detached price in the Cardiff local authority area. The most recent EPC inspection was February 2021, where the current energy rating was C, and the potential energy rating was B.

17 CWM GWYNLAIS Sold Prices

Land registry data shows two sales for 17 CWM GWYNLAIS since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Cardiff local authority area for the corresponding sale date. Both of the two 17 CWM GWYNLAIS sales were for below 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
2021 18 JUN	£365,000	£436,387	16% below HPI
2016 16 MAR	£295,000	£362,520	19% below HPI

17 CWM GWYNLAIS Price Paid vs. HPI Average

The below graph shows the average detached house price in the Cardiff local authority area over time, sourced from the HPI. The two 17 CWM GWYNLAIS sales from March 2016 and June 2021 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 2016 sale was for 19% below the HPI. So the extrapolation line tracks at 19% below the HPI over time, until the June 2021 sale, where it rises to 16% below the HPI. The line then continues to track at 16% below the HPI.

What might 17 CWM GWYNLAIS be worth now?

17 CWM GWYNLAIS might now be worth an estimated £437,217.

This is based on house price inflation of 19.8%, between June 2021 and February 2025, for detached houses, in the Cardiff local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 19.8% inflationary increase is applied to the most recent sale price for 17 CWM GWYNLAIS of £365,000 on 18th June 2021. For the value to have increased from £365,000 to £437,217 over the four years and four months to February 2025, the following assumptions must hold true:

• The value of 17 CWM GWYNLAIS has moved in line with the HPI for detached houses in the Cardiff local authority area.
• The June 2021 sale price of £365,000 represented a fair market value for the property.
• The size, condition, and specification of 17 CWM GWYNLAIS has not materially changed since June 2021.

How Large is 17 CWM GWYNLAIS?

17 CWM GWYNLAIS is 123m², which includes one extension, according to the EPC inspection conducted in February 2021. This puts it in the largest 40% of detached houses houses in Tongwynlais, based on EPC data. The below chart shows the distribution of detached houses houses by size in Tongwynlais, and where 17 CWM GWYNLAIS lies on this distribution: 57% of detached houses houses are smaller than 17 CWM GWYNLAIS, and 40% of houses are larger. Note that EPC data is not available for all properties in Tongwynlais.

17 CWM GWYNLAIS: Plot and Title Map

17 CWM GWYNLAIS sits on a plot of roughly 0.074 of an acre, or 301m². The below map shows the location of 17 CWM GWYNLAIS, 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 CWM GWYNLAIS). 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 CWM GWYNLAIS?

17 CWM GWYNLAIS is located in TONGWYNLAIS, in the CF15 postcode district. The below map shows the position of No. 17 on CWM GWYNLAIS.