17, HEOL ISAF, RADYR, CARDIFF, CF15 8AG - £1,125,000

Based on the August 2024 Price Paid Data (released on 27th September 2024), the July 2024 House Price Index (released on 18th September 2024), and the August 2024 Energy Performance of Buildings Data (released on 3rd October 2024). Sources

17 HEOL ISAF is a very large extended detached house of 251m², built sometime between 1900 and 1929. It was last sold for £1,125,000 in January 2023, which was around 127% above the average January 2023 detached price in the Cardiff local authority area. The most recent EPC inspection was May 2022, where the current energy rating was E, and the potential energy rating was C.

17 HEOL ISAF Sold Prices

Land registry data shows three sales for 17 HEOL ISAF since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Cardiff local authority area for the corresponding sale date. All of the three 17 HEOL ISAF 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
2023 13 JAN	£1,125,000	£495,134	127% above HPI
1999 25 MAY	£233,000	£117,062	99% above HPI
1996 27 AUG	£264,000	£96,845	173% above HPI

17 HEOL ISAF 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 three 17 HEOL ISAF sales between August 1996 and January 2023 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 May 1999 sale was for 99% above the HPI. So the extrapolation line tracks at 99% above the HPI over time, until the January 2023 sale, where it rises to 127% above the HPI. The line then continues to track at 127% above the HPI.

How Large is 17 HEOL ISAF?

17 HEOL ISAF is 251m², which includes two extensions, according to the EPC inspection conducted in May 2022. This puts it in the largest 10% of detached houses in Cardiff, based on EPC data. The below chart shows the distribution of detached houses by size in Cardiff, and where 17 HEOL ISAF lies on this distribution: 96% of detached houses are smaller than 17 HEOL ISAF, and 4% of houses are larger. Note that EPC data is not available for all properties in Cardiff.

17 HEOL ISAF: Plot and Title Map

17 HEOL ISAF sits on a plot of roughly 0.174 of an acre, or 706m². The below map shows the location of 17 HEOL ISAF, 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 HEOL ISAF). 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 HEOL ISAF?

17 HEOL ISAF is located in RADYR, in the CF15 postcode district. The below map shows the position of No. 17 on HEOL ISAF.