5 Gwern Hafren, Severn Grove, Cardiff, CF11 9EY
About 5 Gwern Hafren
5 Gwern Hafren is a one-bedroom mid-terrace house in Cardiff (CF11 9EY). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 2007 onwards and council tax band D. The latest certificate (July 2019) shows a C (score 80), near the top of the C band. Earlier certificates rated it B (November 2008); the latest reading is one band lower. 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 40 m² it's 24.5% smaller than the typical home in the postcode (53 m² median across 14 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Across 2008–2019, sale prices on this property compounded at 2.2% per year. On a £-per-square-foot basis, the last sale (£425/sq ft) was about 40.3% above the typical sold price in the postcode. Most recent transfer: August 2019 at £183,000.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Energy performance
5 Gwern Hafren's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 23 July 2029
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Get a survey for this property
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Planning history
5 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
£184,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.2% per year over 11 years.
£183,000
Growth on file: 2.2% per year over 11 years.
Sales timeline
26 August 2019Most recent
£183,000
+26.2%over 10 years8 December 2008
£145,000
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
5 Gwern Hafren is notably below the street on epc rating.
Price per m²
£4,575
Street avg £3,451
Floor Area
40 m²
Street avg 53 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
0.8 t/year
Street avg 1.1 t/year
Similar properties nearby
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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.







