11 Derwen Road, Ystradgynlais, Swansea, SA9 1HL
About 11 Derwen Road
11 Derwen Road is a semi-detached house in Ystradgynlais, Swansea, Swansea (SA9 1HL). It has a recorded floor area of 123 m² (around 1324 sq ft) and construction records dating it to 1900-1929. The latest certificate (August 2025) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 80).
Know exactly what you're buying at 11 Derwen 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
EPC Rating
Planning history
11 Derwen Road has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 11 Derwen 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
11 Derwen Road has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£275,000
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 SA9 1HL: £185,000 (2025–2015).
Nearby sales in SA9 1HL
12 Derwen Road, Ystradgynlais, Swansea, SA9 1HL
Sold Aug 2025
£260,0004 Derwen Road, Ystradgynlais, Swansea, SA9 1HL
Sold Apr 2021
£258,0006 Derwen Road, Ystradgynlais, Swansea, SA9 1HL
Sold Jan 2017
£165,0003 Derwen Road, Ystradgynlais, Swansea, SA9 1HL
Sold Mar 2015
£122,25010 Derwen Road, Ystradgynlais, Swansea, SA9 1HL
Sold Sept 2003
£115,000
Everything we know about 11 Derwen 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 Derwen Road homes
Floor Area for 11 Derwen Road runs comfortably ahead of the street norm.
EPC Rating
62 (D)
Street avg 63 (D)
Floor Area
123 m²
Street avg 116 m²
CO₂ Emissions
4.9 t/year
Street avg 5.2 t/year
Habitable Rooms
6 rooms
Street avg 5 rooms
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Teddy Bear Bridge — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.