20 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
About 20 Glantawe Park
20 Glantawe Park is a detached house in Ystradgynlais, Swansea, Swansea (SA9 1AE). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (November 2023) shows an E (score 41), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 84), a 3-band jump.
Today's modelled estimate of £234,000 is 33.7% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£226/sq ft) was about 30% above the typical sold price in the postcode. Most recent transfer: July 2024 at £175,000.
Know exactly what you're buying at 20 Glantawe Park
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
20 Glantawe Park's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
20 Glantawe Park has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 20 Glantawe Park
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
20 Glantawe Park valuation sits well clear of the typical sold price in this postcode.
£234,000
Modelled from EPC, postcode comparables.
£175,000
Recorded with HM Land Registry.
Sales timeline
15 July 2024Most recent
£175,000
Median price across the last 5 sales in SA9 1AE: £165,000 (2025–2019).
Nearby sales in SA9 1AE
15 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Jun 2025
£190,00015a, Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Mar 2024
£125,0007 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Feb 2024
£280,00014 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Jun 2022
£135,00046 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Nov 2019
£165,000
Everything we know about 20 Glantawe Park, 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 Glantawe Park homes
On co₂ emissions, 20 Glantawe Park runs well behind the street norm.
Price per m²
£2,431
Street avg £2,000
Floor Area
72 m²
Street avg 75 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
6.7 t/year
Street avg 4.2 t/year
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1 Brynygroes Cottages, Ystradgynlais
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1 Caedegar Road, Ystradgynlais
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1 Brynawel Villas, Brecon Road, Ystradgynlais
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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
Wind Road — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.