77 Heol Isaf, Radyr, Cardiff, CF15 8DW
About 77 Heol Isaf
77 Heol Isaf is a four-bedroom semi-detached house in Radyr, Cardiff, Cardiff (CF15 8DW). It has a recorded floor area of 171 m² (around 1841 sq ft), construction records dating it to 1930-1949 and council tax band G. The latest certificate (February 2018) shows a D (score 58), a step below the typical UK home. The recommended improvements would lift it to B (score 81), a 2-band jump.
At 171 m² it's 15.5% larger than the typical home in the postcode (148 m² median across 17 EPCs). Across 2020–2024, sale prices on this property compounded at 6.3% per year. On a £-per-square-foot basis, the last sale (£326/sq ft) was about 53.4% above the typical sold price in the postcode. Last sale on file: £600,000 in October 2024.
What this property has
Inside
- Bedrooms4
- Bathrooms1
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenFront and rear
Building
- Central heatingYes
Energy performance
77 Heol Isaf's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
77 Heol Isaf has no planning applications on record.
But the area is active
3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
77 Heol Isaf valuation sits well clear of the typical sold price in this postcode.
£558,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.3% per year over 4 years.
£600,000
Growth on file: 6.3% per year over 4 years.
Sales timeline
24 October 2024Most recent
£600,000
+31.4%over 4 years6 May 2020
£456,500
Median price across the last 5 sales in CF15 8DW: £535,000 (2022–2017).
Nearby sales in CF15 8DW
Versus other Heol Isaf homes
Years Held for 77 Heol Isaf lags the street by a wide margin.
Price per m²
£3,509
Street avg £2,704
Floor Area
171 m²
Street avg 157 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
8.1 t/year
Street avg 7.2 t/year
Similar properties nearby
1 Clos Y Mynydd, Morganstown
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1 Clos Tylaway, Radyr
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1 Clos Y Gwyddfid, Morganstown
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1 Caer Idwen, Morganstown
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1 Blaen Y Coed, Radyr
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1 Bates Court, Radyr
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1 Bryn Calch, Morganstown
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1 Ael Y Bryn, Radyr
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Christ Church — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







