20 Alltywaun, Pontardawe, Swansea, SA8 4NX
About 20 Alltywaun
20 Alltywaun is a mid-terrace house in Pontardawe, Swansea, Swansea (SA8 4NX). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (October 2025) returns a high B (score 86), putting the home a stone's throw from an A rating. When first surveyed in August 2011 the rating was E, the property has climbed 3 bands since. Between certificates, wall efficiency went from Average to Very Good, roof efficiency went from Average to Good and window efficiency went from Very Poor to Average.
Energy performance
20 Alltywaun's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Wall insulation improved
Roof insulation improved
More low energy lighting installed
Mechanical ventilation installed
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Planning history
20 Alltywaun has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
20 Alltywaun has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£130,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SA8 4NX: £80,000 (2025–2005).
Nearby sales in SA8 4NX
36 Alltywaun, Pontardawe, Swansea, SA8 4NX
Sold Mar 2025
£118,00038 Alltywaun, Pontardawe, Swansea, SA8 4NX
Sold Jun 2013
£95,00021 Alltywaun, Pontardawe, Swansea, SA8 4NX
Sold Nov 2007
£62,5005 Alltywaun, Pontardawe, Swansea, SA8 4NX
Sold Dec 2005
£57,0002 Alltywaun, Pontardawe, Swansea, SA8 4NX
Sold Jun 2004
£20,400
Versus other Alltywaun homes
On co₂ emissions, 20 Alltywaun stands well clear of the street.
EPC Rating
86 (B)
Street avg 76 (C)
Floor Area
71 m²
Street avg 70 m²
CO₂ Emissions
1.4 t/year
Street avg 2.3 t/year
Habitable Rooms
4 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Gelliderw — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







