20 Gyrnosfa, Lower Cwmtwrch, Swansea, SA9 1DR
About 20 Gyrnosfa
20 Gyrnosfa is a semi-detached house in Lower Cwmtwrch, Swansea, Swansea (SA9 1DR). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (July 2012) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on dual fuel. The latest certificate is from July 2012, so improvements made since then won't be reflected.
Today's modelled estimate of £172,000 sits 102.4% above the 2013 sale of £85,000. It lags the bulk of the postcode on energy efficiency (less efficient than 89% of similar EPCs). 13 years since the last transfer (April 2013).
Know exactly what you're buying at 20 Gyrnosfa
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 18 Jul 2022
EPC Rating
Planning history
20 Gyrnosfa has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 20 Gyrnosfa
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
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Sales history & valuation
20 Gyrnosfa valuation sits well clear of the typical sold price in this postcode.
£172,000
Modelled from EPC, postcode comparables.
£85,000
Recorded with HM Land Registry.
Sales timeline
18 April 2013Most recent
£85,000
Median price across the last 5 sales in SA9 1DR: £145,000 (2025–2016).
Nearby sales in SA9 1DR
33 Gyrnosfa, Lower Cwmtwrch, Swansea, SA9 1DR
Sold Sept 2025
£145,00032 Gyrnosfa, Lower Cwmtwrch, Swansea, SA9 1DR
Sold Mar 2025
£145,0002 Gyrnosfa, Lower Cwmtwrch, Swansea, SA9 1DR
Sold Aug 2023
£155,00034 Gyrnosfa, Lower Cwmtwrch, Swansea, SA9 1DR
Sold Mar 2018
£95,0004 Gyrnosfa, Lower Cwmtwrch, Swansea, SA9 1DR
Sold Sept 2016
£105,000
Everything we know about 20 Gyrnosfa, 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 Gyrnosfa homes
On epc rating, 20 Gyrnosfa runs well behind the street norm.
Price per m²
£850
Street avg £1,227
Floor Area
100 m²
Street avg 89 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
5.6 t/year
Street avg 4.0 t/year
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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
Gyrnosfa — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.