17 Glantawe Park, Ystradgynlais, Swansea, SA9 1AE
About 17 Glantawe Park
17 Glantawe Park is a semi-detached house in Ystradgynlais, Swansea, Swansea (SA9 1AE). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (October 2018) shows an E (score 48), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since September 2018. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Average to Good. The recommended improvements would lift it to B (score 86), a 3-band jump.
Across 1999–2019, sale prices on this property compounded at 4.3% per year. Today's modelled estimate of £179,000 sits 65.7% above the 2019 sale of £108,000. On a £-per-square-foot basis, the last sale (£136/sq ft) was about 26.8% below the postcode norm. Most recent transfer: August 2019 at £108,000.
Know exactly what you're buying at 17 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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
Planning history
17 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 17 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
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Sales history & valuation
Sale price has at least doubled since 1999.
£179,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.3% per year over 20 years.
£108,000
Growth on file: 4.3% per year over 20 years.
Sales timeline
15 August 2019Most recent
£108,000
+129.8%over 19 years31 August 1999
£47,000
Median price across the last 5 sales in SA9 1AE: £175,000 (2025–2022).
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
£175,00015a, 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
£135,000
Everything we know about 17 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 price per m², 17 Glantawe Park runs well behind the street norm.
Price per m²
£1,459
Street avg £2,089
Floor Area
74 m²
Street avg 75 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.9 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.