18 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
About 18 Heol Y Twyn
18 Heol Y Twyn is a two-bedroom semi-detached house in Pontlliw, Swansea, Swansea (SA4 9EU). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (June 2024) shows a C (score 72). The rating has held steady at C across 2 certificates since April 2011. Between certificates, window efficiency went from Average to Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 87).
A recent sale: £165,001 in December 2024. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Across 2011–2024, sale prices on this property compounded at 4.6% per year. On a £-per-square-foot basis, the last sale (£225/sq ft) was about 74.2% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
Outside
- Private gardenFront and rear
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
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Planning history
18 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
18 Heol Y Twyn valuation sits well clear of the typical sold price in this postcode.
£177,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.6% per year over 14 years.
£165,001
Growth on file: 4.6% per year over 14 years.
Sales timeline
6 December 2024Most recent
£165,001
+83.3%over 13 years31 May 2011
£90,000
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
£128,00022 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
£142,50019 Heol Y Twyn, Pontlliw, Swansea, SA4 9EU
Sold Sept 2022
£145,000
Versus other Heol Y Twyn homes
On price per m², 18 Heol Y Twyn stands well clear of the street.
Price per m²
£2,426
Street avg £1,703
Floor Area
68 m²
Street avg 71 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
2.1 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.







