10 Cowper Close, Killay, Swansea, SA2 7DG
About 10 Cowper Close
10 Cowper Close is a semi-detached house in Killay, Swansea, Swansea (SA2 7DG). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1991-1995 and council tax band C. The latest certificate (June 2019) shows an E (score 50), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2013); the latest reading is one band lower. Between certificates, roof efficiency went from Good to Very Good; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 87), a 3-band jump. Main heating runs on electricity.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: tree works approved in 2006. Past consents include tree works, meaningful when judging how the property has evolved. Today's modelled estimate of £193,000 is 33.1% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£249/sq ft) was about 49.1% above the typical sold price in the postcode. Sold October 2019 for £145,000.
Energy performance
10 Cowper Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Window efficiency improved
Loft insulation upgraded to recommended levels
Hot water efficiency improved
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
Hot water efficiency decreased
Cavity wall insulation installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
1 application on record at 10 Cowper Close, Killay, Swansea, SA2 7DG
- Sept 2006Tree WorksTreesOutcome in report
To lop 2 branches from 1 oak tree covered by TPO No 204
- Reference
- 2006/1763
Unlock 10 Cowper Close, Killay, Swansea, SA2 7DG's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 3 notable nearby
- What the pattern means for extending or converting here
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Sales history & valuation
10 Cowper Close valuation sits well clear of the typical sold price in this postcode.
£193,000
Modelled from EPC, postcode comparables.
£145,000
Recorded with HM Land Registry.
Sales timeline
10 October 2019Most recent
£145,000
Median price across the last 5 sales in SA2 7DG: £159,950 (2025–2019).
Nearby sales in SA2 7DG
14 Cowper Close, Killay, Swansea, SA2 7DG
Sold Jan 2025
£207,50018 Cowper Close, Killay, Swansea, SA2 7DG
Sold Dec 2021
£159,9507 Cowper Close, Killay, Swansea, SA2 7DG
Sold Oct 2019
£133,5002 Cowper Close, Killay, Swansea, SA2 7DG
Sold Oct 2019
£192,00021 Cowper Close, Killay, Swansea, SA2 7DG
Sold Aug 2019
£125,000
Versus other Cowper Close homes
On epc rating, 10 Cowper Close runs well behind the street norm.
Price per m²
£2,685
Street avg £1,856
Floor Area
54 m²
Street avg 69 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
4.8 t/year
Street avg 3.2 t/year
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Ffordd Taliesin — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







