21 Blaencefn, Winch Wen, Swansea, SA1 7LF
About 21 Blaencefn
21 Blaencefn is a three-bedroom semi-detached house in Winch Wen, Swansea, Swansea (SA1 7LF). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (May 2022) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since April 2012. Between certificates, lighting went from Average to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 85), a 2-band jump.
2 planning records sit against the property, 2 approved, 0 refused. At 69 m² it's 17.6% smaller than the typical home in the postcode (84 m² median across 14 EPCs).
What this property has
Inside
- Bedrooms3
- Bathrooms3
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 2 May 2032
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
High performance glazing installed
Wall insulation improved
Floor insulation added or improved
Heating controls changed
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Planning history
2 applications on record at 21 Blaencefn, Winch Wen, Swansea, SA1 7LF
- Nov 2007New BuildOutlineOutcome in report
Detached dwelling (outline)
- Reference
- 2006/1044
- More recent applications — locked
- New BuildJan 2011Decision
Unlock 21 Blaencefn, Winch Wen, Swansea, SA1 7LF's full planning history
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- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 3 notable nearby
- The 6 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21 Blaencefn has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£161,000
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 SA1 7LF: £150,000 (2025–2022).
Nearby sales in SA1 7LF
14 Blaencefn, Winch Wen, Swansea, SA1 7LF
Sold Apr 2025
£210,00018 Blaencefn, Winch Wen, Swansea, SA1 7LF
Sold Jan 2025
£169,00032 Blaencefn, Winch Wen, Swansea, SA1 7LF
Sold Feb 2024
£122,00026 Blaencefn, Winch Wen, Swansea, SA1 7LF
Sold Dec 2023
£150,0003 Blaencefn, Winch Wen, Swansea, SA1 7LF
Sold Feb 2021
£74,000
Versus other Blaencefn homes
On co₂ emissions, 21 Blaencefn stands well clear of the street.
EPC Rating
68 (D)
Street avg 62 (D)
Floor Area
69 m²
Street avg 90 m²
CO₂ Emissions
2.5 t/year
Street avg 3.7 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
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The neighbourhood at a glance
Crime
580/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Lan Coed Spar — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







