21 Southminster Road, Cardiff, CF23 5AT
About 21 Southminster Road
21 Southminster Road is a four-bedroom mid-terrace house in Cardiff (CF23 5AT). It has a recorded floor area of 148 m² (around 1593 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (December 2014) shows a D (score 57), a step below the typical UK home. The rating has held steady at D across 2 certificates since June 2012. Between certificates, roof efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 82), a 2-band jump. The latest certificate is from December 2014, so improvements made since then won't be reflected.
Across 2012–2022, sale prices on this property compounded at 6.8% per year. On a £-per-square-foot basis, the last sale (£282/sq ft) was about 56.6% above the typical sold price in the postcode. Most recent transfer: June 2022 at £450,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms4
- Bathrooms3
- Dining roomYes
- CloakroomYes
- EnsuiteYes
Outside
- Private gardenSouth-west-facing
Building
- RefurbishedYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 03 Dec 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
Windows upgraded, improving insulation
Low energy lighting percentage decreased
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Planning history
21 Southminster Road has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£494,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.8% per year over 10 years.
£450,000
Growth on file: 6.8% per year over 10 years.
Sales timeline
29 June 2022Most recent
£450,000
+87.5%over 9 years7 December 2012
£240,000
Median price across the last 5 sales in CF23 5AT: £517,500 (2025–2022).
Nearby sales in CF23 5AT
Versus other Southminster Road homes
EPC Rating for 21 Southminster Road lags the street by a wide margin.
Price per m²
£3,041
Street avg £2,659
Floor Area
148 m²
Street avg 135 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
5.7 t/year
Street avg 5.2 t/year
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Stacey Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







