8 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
About 8 Clos Cilfwnwr
8 Clos Cilfwnwr is a detached house in Penllergaer, Swansea, Swansea (SA4 9BU). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to 1967-1975 and council tax band E. The latest certificate (September 2024) returns an A (score 94), the top energy band on the EPC scale. When first surveyed in November 2011 the rating was E, the property has climbed 4 bands since. Between certificates, roof efficiency went from Poor to Good, window efficiency went from Average to Good and hot-water efficiency went from Average to Good.
On energy efficiency it sits in the top 10% of properties in this postcode. It changed hands recently, sold February 2025 for £335,000. Across 2012–2025, sale prices on this property compounded at 5.4% per year. On a £-per-square-foot basis, the last sale (£321/sq ft) was about 51.6% above the typical sold price in the postcode.
Energy performance
8 Clos Cilfwnwr ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Windows upgraded, improving insulation
Cavity wall insulation installed
More low energy lighting installed
Solar PV panels (50 kWp) installed
Window efficiency improved
Roof insulation improved
More low energy lighting installed
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Planning history
8 Clos Cilfwnwr has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
8 Clos Cilfwnwr valuation sits well clear of the typical sold price in this postcode.
£359,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.4% per year over 13 years.
£335,000
Growth on file: 5.4% per year over 13 years.
Sales timeline
17 February 2025Most recent
£335,000
+97.1%over 12 years23 March 2012
£170,000
Median price across the last 5 sales in SA4 9BU: £315,000 (2024–2018).
Nearby sales in SA4 9BU
19 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
Sold Nov 2024
£335,00021 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
Sold Jul 2022
£315,0003 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
Sold Jun 2022
£325,00022 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
Sold Feb 2021
£305,0002 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
Sold Dec 2018
£240,000
Versus other Clos Cilfwnwr homes
8 Clos Cilfwnwr is notably below the street on years held.
Price per m²
£3,454
Street avg £2,815
Floor Area
97 m²
Street avg 96 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
0.8 t/year
Street avg 4.5 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Clos Cilfwnwr — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







