20a, Robert Street, Ely, Cardiff, CF5 5AA
About 20a
20a is a semi-detached house in Ely, Cardiff, Cardiff (CF5 5AA). It has a recorded floor area of 92 m² (around 990 sq ft). The latest certificate (March 2017) returns a B (score 83), comfortably above the UK average. When first surveyed in February 2017 the rating was C, the property has climbed 1 band since. Between certificates, window efficiency went from Good to Very Good and lighting went from Average to Very Good; while wall efficiency dropped from Very Good to Good. The recommended improvements would push it to A (score 94).
On energy efficiency it sits in the top 10% of properties in this postcode.
Everything you need to know about 20a
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Energy performance
20a ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
High performance glazing installed
More low energy lighting installed
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Planning history
20a 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
20a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£202,000
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 5AA: £163,000 (2025–2019).
Nearby sales in CF5 5AA
Versus other Robert Street homes
20a outperforms the street on epc rating by a wide margin.
EPC Rating
83 (B)
Street avg 64 (D)
Floor Area
92 m²
Street avg 93 m²
CO₂ Emissions
1.4 t/year
Street avg 3.5 t/year
Everything you need to know about 20a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
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
0.2 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.