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Get started20 Nant Y Wiwer is a three-bedroom semi-detached house in Margam, Port Talbot, Port Talbot (SA13 2XX). It has a recorded floor area of 74 m² (around 794 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (October 2010) shows a C (score 70). The rating has held steady at C across 2 certificates since February 2009. Between certificates, lighting went from Very Poor to Poor; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The latest certificate is from October 2010, so improvements made since then won't be reflected.
It hasn't traded since March 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Sale prices here have outpaced England HPI: 13.9% per year against 0% for the wider region. Today's modelled estimate of £190,000 is 40.7% above the 2007 sale price. One planning record on file: an extension approved in 2021. Past consents include an extension, meaningful when judging how the property has evolved. At 74 m² it's 19% larger than the typical home in the postcode (62 m² median across 25 EPCs).
20 Nant Y Wiwer's EPC is over a decade old — improvements since won't be reflected.
This certificate is over 10 years old and is no longer valid.Expired 04 Oct 2020
20 Nant Y Wiwer has an approved single-storey rear extension on the planning record.
Extension: Single storey · Rear of property
Single storey rear extension
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£190,000
Modelled from EPC, postcode comparables and a sale-price growth of 13.9% per year over 5 years.
£135,000
Growth on file: 13.9% per year over 5 years.
20 Nant Y Wiwer is notably below the street on co₂ emissions.
Price per m²
£1,829
Street avg £2,058
Floor Area
74 m²
Street avg 66 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
Coed Hirwaun Primary School — bus stop.
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
30 March 2007Most recent
£135,000
+93.3%over 5 years1 March 2002
£69,825
Median price across the last 5 sales in SA13 2XX: £165,000 (2025–2021).
CO₂ Emissions
3.0 t/year
Street avg 2.2 t/year
SA13 2HP
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