15a, Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
About 15a
15a is a semi-detached house in Ystradgynlais, Swansea, Swansea (SA9 1AE). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (October 2016) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 88), a 3-band jump.
Today's modelled estimate of £177,000 is 41.6% above the 2024 sale price. Most recent transfer: March 2024 at £125,000.
Know exactly what you're buying at 15a
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 Rating
Planning history
15a has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 15a
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
15a valuation sits well clear of the typical sold price in this postcode.
£177,000
Modelled from EPC, postcode comparables.
£125,000
Recorded with HM Land Registry.
Sales timeline
8 March 2024Most recent
£125,000
Median price across the last 5 sales in SA9 1AE: £175,000 (2025–2019).
Nearby sales in SA9 1AE
15 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Jun 2025
£190,00020 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
Sold Jul 2024
£175,0007 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 15a, 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 floor area, 15a runs well behind the street norm.
Price per m²
£1,866
Street avg £2,052
Floor Area
67 m²
Street avg 75 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.6 t/year
Street avg 4.3 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
Wind Road — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.