40 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX
About 40 Dyffryn Road
40 Dyffryn Road is a four-bedroom semi-detached house in Pontardawe, Swansea, Swansea (SA8 3BX). It has a recorded floor area of 243 m² (around 2616 sq ft) and construction records dating it to 2022. The latest certificate (March 2022) returns a high B (score 87), putting the home a stone's throw from an A rating. The recommended improvements would push it to A (score 93). Main heating runs on electricity: electricity, unspecified tariff. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal. Other recorded features include notable views.
At 243 m² the property is well over the postcode median (84 m² across 18 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £520,000 is 15.6% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£172/sq ft) was about 26.6% above the typical sold price in the postcode. Last sale on file: £450,000 in May 2024.
What this property has
Inside
- Bedrooms4
- Bathrooms3
- Open-plan layoutYes
- Dining roomYes
Outside
- ParkingOff road
- Notable viewsYes
Building
- Central heatingYes
- Underfloor heatingYes
Energy performance
40 Dyffryn Road ranks among the most efficient homes in the postcode for energy use.
EPC Rating
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Planning history
40 Dyffryn Road has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
Latest sale on 40 Dyffryn Road was the highest on Land Registry record across the postcode.
£520,000
Modelled from EPC, postcode comparables.
£450,000
Recorded with HM Land Registry.
Sales timeline
23 May 2024Most recent
£450,000
Median price across the last 5 sales in SA8 3BX: £200,000 (2025–2022).
Nearby sales in SA8 3BX
4 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX
Sold Jul 2025
£167,50019 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX
Sold Dec 2024
£230,00015 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX
Sold Oct 2024
£230,0006 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX
Sold Mar 2024
£200,00023 Dyffryn Road, Alltwen, Pontardawe, Swansea, SA8 3BX
Sold May 2022
£150,000
Versus other Dyffryn Road homes
On floor area, 40 Dyffryn Road stands well clear of the street.
Price per m²
£1,852
Street avg £1,605
Floor Area
243 m²
Street avg 91 m²
CO₂ Emissions
2.4 t/year
Street avg 5.4 t/year
Years Held
2 years
Street avg 8 years
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Tan yr Allt House — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







