12 Allerton Street, Cardiff, CF11 6SJ
About 12 Allerton Street
12 Allerton Street is a three-bedroom mid-terrace house in Cardiff (CF11 6SJ). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (April 2016) shows an E (score 51), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 86), a 3-band jump. The latest certificate is from April 2016, so improvements made since then won't be reflected.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £212,000 sits 64.3% above the 2016 sale of £129,000. On a £-per-square-foot basis, the last sale (£158/sq ft) was about 78.2% above the typical sold price in the postcode. 10 years since the last transfer (October 2016).
What this property has
Inside
- Bedrooms3
- Bathrooms1
Everything you need to know about 12 Allerton Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
12 Allerton Street sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 01 Apr 2026
EPC Rating
Certificate validity
Expired on 1 April 2026
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
12 Allerton Street has no planning applications on record.
But the area is active
10 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12 Allerton Street valuation sits well clear of the typical sold price in this postcode.
£212,000
Modelled from EPC, postcode comparables.
£129,000
Recorded with HM Land Registry.
Sales timeline
31 October 2016Most recent
£129,000
Median price across the last 5 sales in CF11 6SJ: £200,000 (2024–2015).
Nearby sales in CF11 6SJ
Versus other Allerton Street homes
12 Allerton Street is notably below the street on epc rating.
Price per m²
£1,697
Street avg £1,338
Floor Area
76 m²
Street avg 89 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
4.7 t/year
Street avg 3.4 t/year
Everything you need to know about 12 Allerton Street
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
362/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Clare Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.