15a Nelson House, Loudoun Square, Cardiff, CF10 5JG
About 15a Nelson House
15a Nelson House is a semi-detached house in Cardiff (CF10 5JG). It has a recorded floor area of 64 m² (around 689 sq ft) and construction records dating it to 1950-1966. At 64 m² this is the 5th smallest of 20 units on EPC record in the building, where floor areas span 56–145 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (June 2023) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 71).
It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs).
Energy performance
EPC Rating
Certificate validity
Valid until 9 June 2033
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Planning history
15a Nelson House has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
15a Nelson House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£146,000
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.
Versus other Loudoun Square homes
15a Nelson House is notably below the street on epc rating.
EPC Rating
58 (D)
Street avg 73 (C)
Floor Area
64 m²
Street avg 75 m²
CO₂ Emissions
3.5 t/year
Street avg 2.2 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
485/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
South Loudon Place — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







