77, HEOL ISAF, RADYR, CARDIFF, CF15 8DW - £600,000

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.

77 HEOL ISAF is a very large extended semi-detached house of 171m², built sometime between 1930 and 1949, which could now be worth an estimated £625,562. It was last sold for £600,000 in October 2024, which was around 92% above the average October 2024 semi-detached price in the Cardiff local authority area. The most recent EPC inspection was February 2018, where the current energy rating was D, and the potential energy rating was B.

77 HEOL ISAF Sold Prices

Land registry data shows two sales for 77 HEOL ISAF 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 Cardiff local authority area for the corresponding sale date. Both of the two 77 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
2024 25 OCT	£600,000	£312,117	92% above HPI
2020 7 MAY	£456,500	£244,884	86% above HPI

77 HEOL ISAF Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Cardiff local authority area over time, sourced from the HPI. The two 77 HEOL ISAF sales from May 2020 and October 2024 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 2020 sale was for 86% above the HPI. So the extrapolation line tracks at 86% above the HPI over time, until the October 2024 sale, where it rises to 92% above the HPI. The line then continues to track at 92% above the HPI.

What might 77 HEOL ISAF be worth now?

77 HEOL ISAF might now be worth an estimated £625,562.

This is based on house price inflation of 4.3%, between October 2024 and May 2026, for semi-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 4.3% inflationary increase is applied to the most recent sale price for 77 HEOL ISAF of £600,000 on 25th October 2024. For the value to have increased from £600,000 to £625,562 over the two years and five months to May 2026, the following assumptions must hold true:

• The value of 77 HEOL ISAF has moved in line with the HPI for semi-detached houses in the Cardiff local authority area.
• The October 2024 sale price of £600,000 represented a fair market value for the property.
• The size, condition, and specification of 77 HEOL ISAF has not materially changed since October 2024.

How Large is 77 HEOL ISAF?

77 HEOL ISAF is 171m², which includes three extensions, according to the EPC inspection conducted in February 2018. This puts it in the largest 20% of semi-detached houses houses in Cardiff, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Cardiff, and where 77 HEOL ISAF lies on this distribution: 81% of semi-detached houses houses are smaller than 77 HEOL ISAF, and 18% of houses are larger. Note that EPC data is not available for all properties in Cardiff.

77 HEOL ISAF: Plot and Title Map

77 HEOL ISAF sits on a plot of roughly 0.129 of an acre, or 523m². The below map shows the location of 77 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 77 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 77 HEOL ISAF?

77 HEOL ISAF is located in RADYR, in the CF15 postcode district. The below map shows the position of No. 77 on HEOL ISAF.