4 Boswell Close, Llanrumney, Cardiff, CF3 5NY
About 4 Boswell Close
4 Boswell Close is a detached house in Llanrumney, Cardiff, Cardiff (CF3 5NY). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (July 2026) shows a C (score 78), near the top of the C band. The rating has held steady at C across 2 certificates since September 2014. Between certificates, roof efficiency went from Good to Very Good and lighting went from Poor to Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 82). This certificate was lodged in the last six months, so the rating reflects current condition.
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 23 July 2036
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
4 Boswell Close 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
4 Boswell Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£200,000
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 CF3 5NY: £80,000 (2023–2009).
Nearby sales in CF3 5NY
7 Boswell Close, Llanrumney, Cardiff, CF3 5NY
Sold Jan 2023
£185,0003 Boswell Close, Llanrumney, Cardiff, CF3 5NY
Sold Nov 2014
£82,0005 Boswell Close, Llanrumney, Cardiff, CF3 5NY
Sold Feb 2014
£80,0008 Boswell Close, Llanrumney, Cardiff, CF3 5NY
Sold Jun 2010
£80,00011 Boswell Close, Llanrumney, Cardiff, CF3 5NY
Sold Sept 2009
£79,000
Versus other Boswell Close homes
4 Boswell Close outperforms the street on epc rating by a wide margin.
EPC Rating
78 (C)
Street avg 71 (C)
Floor Area
85 m²
Street avg 76 m²
CO₂ Emissions
1.8 t/year
Street avg 2.4 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
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The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Siloam Baptist — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







