26 Heol Y Castell, Ely, Cardiff, CF5 5LS
About 26 Heol Y Castell
26 Heol Y Castell is a semi-detached house in Ely, Cardiff, Cardiff (CF5 5LS). It has a recorded floor area of 70 m² (around 753 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (April 2026) shows a C (score 74). The rating has held steady at C across 2 certificates since October 2018. Between certificates, wall efficiency went from Average to Good. This certificate was lodged in the last six months, so the rating reflects current condition.
At 70 m² it's 20.5% smaller than the typical home in the postcode (88 m² median across 17 EPCs). Across 1996–2019, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £185,000 is 48% above the 2019 sale price. Most recent transfer: January 2019 at £125,000.
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 20 April 2036
Property Improvements
Changes detected from historical EPC data
Wall insulation improved
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Planning history
26 Heol Y Castell has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
Price for 26 Heol Y Castell has grown more than fourfold since the 1996 starting point.
£185,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.4% per year over 23 years.
£125,000
Growth on file: 6.4% per year over 23 years.
Sales timeline
15 January 2019Most recent
£125,000
+316.7%over 23 years10 January 1996
£30,000
Median price across the last 5 sales in CF5 5LS: £182,000 (2025–2022).
Nearby sales in CF5 5LS
2 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Jul 2025
£180,00014 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Nov 2024
£170,00022 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Oct 2023
£182,00024 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Sept 2023
£195,00042 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold May 2022
£185,000
Versus other Heol Y Castell homes
Floor Area for 26 Heol Y Castell lags the street by a wide margin.
Price per m²
£1,786
Street avg £1,709
Floor Area
70 m²
Street avg 90 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.0 t/year
Street avg 3.2 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
426/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Heol-y-Gaer — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







