16 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
About 16 Heol Y Twyn
16 Heol Y Twyn is a three-bedroom semi-detached house in Pontlliw, Swansea, Swansea (SA4 9EU). It has a recorded floor area of 68 m² (around 731 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (March 2009) shows an E (score 43), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 74), a 2-band jump. The latest certificate is from March 2009, so improvements made since then won't be reflected.
Across 1998–2018, sale prices on this property compounded at 3.4% per year. Today's modelled estimate of £155,000 sits 68.5% above the 2018 sale of £92,000. Last changed hands 8 years ago, in May 2018. Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: a garage conversion approved in 2021. Past consents include a garage conversion, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs).
What this property has
Inside
- Bedrooms3
- Bathrooms1
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This certificate is over 10 years old and is no longer valid.Expired 11 Mar 2019
EPC Rating
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Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
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Planning history
1 application on record at 16 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
- Jun 2021Garage ConversionFullOutcome in report
Conversion of garage to living accommodation with replacement of flat to pitch roof above
- Documents
- 7 docs on file
- Reference
- 2021/1030/FUL
Unlock 16 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 1 notable nearby
- The 7 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
16 Heol Y Twyn's estimated value is more than triple its earliest registered sale price (1998).
£155,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.4% per year over 20 years.
£92,000
Growth on file: 3.4% per year over 20 years.
Sales timeline
17 May 2018Most recent
£92,000
+15.1%over 8 years28 May 2009
£79,950
+59.9%over 8 years7 September 2000
£50,000
+4.2%over 2 years27 August 1998
£48,000
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
EPC Rating for 16 Heol Y Twyn lags the street by a wide margin.
Price per m²
£1,355
Street avg £1,741
Floor Area
68 m²
Street avg 71 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
5.8 t/year
Street avg 3.2 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.







