12 Alltmawr Road, Cardiff, CF23 6NQ
About 12 Alltmawr Road
12 Alltmawr Road is a detached house in Cardiff (CF23 6NQ). It has a recorded floor area of 280 m² (around 3014 sq ft), construction records dating it to 1950-1966 and council tax band H. The latest certificate (June 2023) shows a C (score 71). The rating has held steady at C across 2 certificates since April 2009. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Average and roof efficiency dropped from Good to Average.
Untraded for 16 years, with the last transfer in May 2010. At 280 m² the property is well over the postcode median (191 m² across 11 EPCs), placing it in the larger end of the local stock. Across 2006–2010, sale prices on this property compounded at 8.9% per year. Today's modelled estimate of £972,000 sits 58% above the 2010 sale of £615,000. On a £-per-square-foot basis, the last sale (£204/sq ft) was about 20.1% below the postcode norm.
Everything you need to know about 12 Alltmawr Road
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Energy performance
12 Alltmawr Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Certificate validity
Valid until 5 June 2033
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,495 · Includes VAT
Planning history
12 Alltmawr 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
12 Alltmawr Road valuation sits well clear of the typical sold price in this postcode.
£972,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.9% per year over 4 years.
£615,000
Growth on file: 8.9% per year over 4 years.
Sales timeline
6 May 2010Most recent
£615,000
+42.2%over 4 years13 March 2006
£432,500
Median price across the last 5 sales in CF23 6NQ: £737,500 (2025–2022).
Nearby sales in CF23 6NQ
Versus other Alltmawr Road homes
Price per m² for 12 Alltmawr Road lags the street by a wide margin.
Price per m²
£2,196
Street avg £3,637
Floor Area
280 m²
Street avg 197 m²
Habitable Rooms
9 rooms
Street avg 7 rooms
CO₂ Emissions
7.3 t/year
Street avg 7.7 t/year
Everything you need to know about 12 Alltmawr Road
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Llangorse Rd — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.