17 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
About 17 Heol Y Twyn
17 Heol Y Twyn is a semi-detached house in Pontlliw, Swansea, Swansea (SA4 9EU). 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 (March 2022) shows a C (score 70). The recommended improvements would push it to B (score 85).
Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Across 2008–2022, sale prices on this property compounded at 3.3% per year. Today's modelled estimate of £178,000 is 11.9% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£220/sq ft) was about 71.4% above the typical sold price in the postcode. Most recent transfer: July 2022 at £159,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
EPC Rating
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Planning history
17 Heol Y Twyn has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£178,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.3% per year over 14 years.
£159,000
Growth on file: 3.3% per year over 14 years.
Sales timeline
28 July 2022Most recent
£159,000
+59.0%over 14 years28 January 2008
£100,000
Median price across the last 5 sales in SA4 9EU: £142,500 (2025–2022).
Nearby sales in SA4 9EU
21 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
Sold Apr 2025
£128,00018 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
Sold Dec 2024
£165,00122 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
Sold Apr 2024
£164,00038 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
Sold Mar 2024
£136,0001 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
Sold Oct 2022
£142,500
Versus other Heol Y Twyn homes
Price per m² for 17 Heol Y Twyn runs comfortably ahead of the street norm.
Price per m²
£2,373
Street avg £1,705
Floor Area
67 m²
Street avg 71 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.3 t/year
Street avg 3.3 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Post Office — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







