8 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
About 8 Gwern Hafren
8 Gwern Hafren is a one-bedroom end-of-terrace house in Cardiff (CF11 9EY). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to 2007 onwards and council tax band D. The latest certificate (March 2019) returns a B (score 81), comfortably above the UK average. The rating has held steady at B across 2 certificates since February 2009. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Good. At 36 m² this is the 2nd smallest of 15 units on EPC record in the building, where floor areas span 34–93 m². The building's EPC ratings span C to B, with this unit at the top.
Untraded for 17 years, with the last transfer in March 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 36 m² it sits well below the postcode median (53 m² across 14 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £154,000 is 40% above the 2009 sale price.
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Utility roomYes
Building
- LiftYes
Energy performance
8 Gwern Hafren's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 28 March 2029
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
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Planning history
8 Gwern Hafren has no planning applications on record.
But the area is active
4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£154,000
Modelled from EPC, postcode comparables.
£110,000
Recorded with HM Land Registry.
Sales timeline
19 March 2009Most recent
£110,000
Median price across the last 5 sales in CF11 9EY: £195,100 (2026–2022).
Nearby sales in CF11 9EY
7 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
Sold Mar 2026
£175,00011 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
Sold Jan 2026
£162,0002 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
Sold Apr 2024
£195,10014 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
Sold Feb 2024
£416,00015 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
Sold Mar 2022
£405,000
Versus other Severn Grove homes
8 Gwern Hafren outperforms the street on co₂ emissions by a wide margin.
Price per m²
£3,056
Street avg £3,589
Floor Area
36 m²
Street avg 54 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
0.7 t/year
Street avg 1.1 t/year
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The neighbourhood at a glance
Crime
362/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Halfway Hotel — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







