12a, Mill Road, Ely, Cardiff, CF5 4AG
About 12a
12a is a mid-terrace house in Ely, Cardiff, Cardiff (CF5 4AG). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to 1900-1929 and council tax band A. At 38 m² this is the 4th smallest of 24 units on EPC record in the building, where floor areas span 33–140 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (73 versus a worst of 44). The latest certificate (March 2020) shows a C (score 73). The rating has held steady at C across 2 certificates since October 2008. Between certificates, roof efficiency went from Poor to Good and lighting went from Very Poor to Very Good; while window efficiency dropped from Good to Average.
At 38 m² it sits well below the postcode median (78 m² across 23 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs).
Energy performance
12a's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Roof insulation improved
More low energy lighting installed
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 £820 · Includes VAT
Planning history
12a has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
12a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£114,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF5 4AG: £155,000 (2024–2022).
Nearby sales in CF5 4AG
Versus other Mill Road homes
EPC Rating for 12a runs comfortably ahead of the street norm.
EPC Rating
73 (C)
Street avg 58 (D)
Floor Area
38 m²
Street avg 50 m²
CO₂ Emissions
1.4 t/year
Street avg 3.1 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Mill Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







