23 Gwynfryn Road, Pontarddulais, Swansea, SA4 8LG
About 23 Gwynfryn Road
23 Gwynfryn Road is a semi-detached house in Pontarddulais, Swansea, Swansea (SA4 8LG). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (February 2020) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2010. Between certificates, roof efficiency went from Average to Good; while wall efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 79).
Across 2006–2020, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £231,000 is 28.3% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£167/sq ft) was about 21.2% above the typical sold price in the postcode. Most recent transfer: June 2020 at £180,000.
Energy performance
EPC Rating
Certificate validity
Valid until 10 February 2030
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Windows upgraded, improving insulation
Roof insulation improved
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Planning history
23 Gwynfryn Road 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
23 Gwynfryn Road has more than doubled in price since the earliest registered sale in 2006.
£231,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.4% per year over 14 years.
£180,000
Growth on file: 6.4% per year over 14 years.
Sales timeline
25 June 2020Most recent
£180,000
+53.2%over 8 years13 July 2011
£117,500
+56.7%over 5 years18 May 2006
£75,000
Median price across the last 5 sales in SA4 8LG: £154,000 (2026–2014).
Nearby sales in SA4 8LG
14 Gwynfryn Road, Pontarddulais, Swansea, SA4 8LG
Sold Jan 2026
£240,50017 Gwynfryn Road, Pontarddulais, Swansea, SA4 8LG
Sold Jun 2020
£175,0004 Gwynfryn Road, Pontarddulais, Swansea, SA4 8LG
Sold Jan 2018
£154,00016 Gwynfryn Road, Pontarddulais, Swansea, SA4 8LG
Sold Oct 2014
£150,00011 Gwynfryn Road, Pontarddulais, Swansea, SA4 8LG
Sold May 2014
£135,000
Versus other Gwynfryn Road homes
23 Gwynfryn Road outperforms the street on co₂ emissions by a wide margin.
Price per m²
£1,800
Street avg £1,443
Floor Area
100 m²
Street avg 110 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.8 t/year
Street avg 4.7 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
160/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
King Hotel — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







