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Get started23 Margam Street is a three-bedroom end-of-terrace house in Cymmer, Port Talbot, Port Talbot (SA13 3ED). It has a recorded floor area of 93 m² (around 1001 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (January 2025) 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 September 2019. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Good to Very Good and window efficiency went from Average to Good. The recommended improvements would lift it to B (score 86), a 2-band jump.
Sale prices here have outpaced England HPI: 5% per year against 0% for the wider region. Today's modelled estimate of £141,000 is 12.8% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£125/sq ft) was about 61.8% above the typical sold price in the postcode. It changed hands recently, sold June 2025 for £125,000. One planning record on file: an extension approved in 2011. Past consents include an extension, meaningful when judging how the property has evolved. At 93 m² it's 27.4% larger than the typical home in the postcode (73 m² median across 22 EPCs).
Recommended upgrades on file would lift this property by multiple EPC bands.
23 Margam Street has an approved single-storey rear extension on the planning record.
Extension: Single storey · Rear of property
First-floor rear extension
23 Margam Street has more than doubled in price since the earliest registered sale in 2004.
£141,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.0% per year over 21 years.
£125,000
Growth on file: 5.0% per year over 21 years.
Years Held for 23 Margam Street lags the street by a wide margin.
Price per m²
£1,344
Street avg £1,002
Floor Area
93 m²
Street avg 77 m²
Habitable Rooms
5 rooms
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Cymmer Swimming Pool — bus stop.
Changes detected from historical EPC data
Window efficiency improved
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
Are we missing something? Tell us about home improvements to help adjust your valuation.
12 June 2025Most recent
£125,000
+108.3%over 16 years24 April 2009
£60,000
+33.3%over 4 years26 May 2004
£45,000
Median price across the last 5 sales in SA13 3ED: £90,000 (2025–2023).
Street avg 4 rooms
CO₂ Emissions
3.6 t/year
Street avg 3.7 t/year
SA13 3RR
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