4 Cwmtawe Road, Ystradgynlais, Swansea, SA9 1QU
About 4 Cwmtawe Road
4 Cwmtawe Road is a detached house in Ystradgynlais, Swansea, Swansea (SA9 1QU). It has a recorded floor area of 271 m² (around 2917 sq ft). The latest certificate (December 2020) returns a high B (score 87), putting the home a stone's throw from an A rating. When first surveyed in October 2019 the rating was C, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good and window efficiency went from Good to Very Good.
At 271 m² the property is well over the postcode median (96 m² across 24 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 £542,000 is 26.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£147/sq ft) was about 33.5% above the typical sold price in the postcode. Most recent transfer: March 2021 at £427,500. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 4 Cwmtawe Road
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
4 Cwmtawe Road ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
High performance glazing installed
Roof insulation improved
More low energy lighting installed
Planning history
4 Cwmtawe Road has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 4 Cwmtawe Road
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Latest sale on 4 Cwmtawe Road was the highest on Land Registry record across the postcode.
£542,000
Modelled from EPC, postcode comparables.
£427,500
Recorded with HM Land Registry.
Sales timeline
22 March 2021Most recent
£427,500
Median price across the last 5 sales in SA9 1QU: £150,000 (2025–2021).
Nearby sales in SA9 1QU
35 Cwmtawe Road, Ystradgynlais, Swansea, SA9 1QU
Sold Oct 2025
£150,00011 Cwmtawe Road, Ystradgynlais, Swansea, SA9 1QU
Sold Jul 2022
£225,00029 Cwmtawe Road, Ystradgynlais, Swansea, SA9 1QU
Sold Aug 2021
£120,00038 Cwmtawe Road, Ystradgynlais, Swansea, SA9 1QU
Sold Jul 2021
£145,0005 Cwmtawe Road, Ystradgynlais, Swansea, SA9 1QU
Sold May 2021
£385,000
Everything we know about 4 Cwmtawe Road, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Cwmtawe Road homes
On epc rating, 4 Cwmtawe Road stands well clear of the street.
Price per m²
£1,577
Street avg £1,316
Floor Area
271 m²
Street avg 116 m²
CO₂ Emissions
3.2 t/year
Street avg 6.5 t/year
Years Held
5 years
Street avg 9 years
Similar properties nearby
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1 Brynygroes Cottages, Ystradgynlais
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1 Abercrave Villas, Heol Tawe, Abercrave
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1 2 Metz Cottages, Ystradgynlais
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1 Astoria Place, Ystradgynlais
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1 Caerbont Cottages, Abercrave
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Primary School — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.