12 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
About 12 Clos Cilfwnwr
12 Clos Cilfwnwr is a detached house in Penllergaer, Swansea, Swansea (SA4 9BU). It has a recorded floor area of 140 m² (around 1507 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (August 2016) shows a D (score 61), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 81), a 2-band jump.
At 140 m² the property is well over the postcode median (89 m² across 10 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £410,000 sits 70.8% above the 2017 sale of £240,000. On a £-per-square-foot basis, the last sale (£159/sq ft) was about 24.8% below the postcode norm. Last changed hands 9 years ago, in May 2017.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Get a survey for this property
Level 2 HomeBuyer Report
We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.
From £695 · Includes VAT
Planning history
12 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
12 Clos Cilfwnwr valuation sits well clear of the typical sold price in this postcode.
£410,000
Modelled from EPC, postcode comparables.
£240,000
Recorded with HM Land Registry.
Sales timeline
18 May 2017Most recent
£240,000
Median price across the last 5 sales in SA4 9BU: £325,000 (2025–2021).
Nearby sales in SA4 9BU
8 Clos Cilfwnwr, Penllergaer, Swansea, SA4 9BU
Sold Feb 2025
£335,00019 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
£305,000
Versus other Clos Cilfwnwr homes
On price per m², 12 Clos Cilfwnwr runs well behind the street norm.
Price per m²
£1,714
Street avg £3,032
Floor Area
140 m²
Street avg 92 m²
Habitable Rooms
8 rooms
Street avg 5 rooms
CO₂ Emissions
5.9 t/year
Street avg 4.0 t/year
Similar properties nearby
1 Bryn Road, Pontlliw
SA4 9ED
1 Clos Penbwl, Penllergaer
SA4 9HP
1 Cwrt Ithol, Penllergaer
SA4 9FN
1 Clos Cerdinen, Tircoed Forest Village, Penllergaer
SA4 9QL
1 Clos Penderri, Penllergaer
SA4 9BZ
1 Clos Bryn Dafydd, Penllergaer
SA4 9BX
1 Clos Ger Y Bryn, Tircoed Forest Village, Penllergaer
SA4 9JL
1 Clos Cilfwnwr, Penllergaer
SA4 9BU
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.







