30 Gwili Terrace, Mayhill, Swansea, SA1 6TW
About 30 Gwili Terrace
30 Gwili Terrace is a semi-detached house in Mayhill, Swansea, Swansea (SA1 6TW). It has a recorded floor area of 84 m² (around 904 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (November 2024) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 87), a 2-band jump.
Most recent transfer was April 2025 at £125,000 — fresh data. At 84 m² it's 16.7% larger than the typical home in the postcode (72 m² median across 27 EPCs). Today's modelled estimate of £143,000 is 14.4% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£138/sq ft) was about 58.8% above the typical sold price in the postcode.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 8 November 2034
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Planning history
30 Gwili Terrace has no planning applications on record.
But the area is active
61 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
30 Gwili Terrace valuation sits well clear of the typical sold price in this postcode.
£143,000
Modelled from EPC, postcode comparables.
£125,000
Recorded with HM Land Registry.
Sales timeline
30 April 2025Most recent
£125,000
Median price across the last 5 sales in SA1 6TW: £105,000 (2025–2019).
Nearby sales in SA1 6TW
29 Gwili Terrace, Mayhill, Swansea, SA1 6TW
Sold Aug 2025
£135,00025 Gwili Terrace, Mayhill, Swansea, SA1 6TW
Sold Nov 2024
£120,0002 Gwili Terrace, Mayhill, Swansea, SA1 6TW
Sold Mar 2021
£105,00031 Gwili Terrace, Mayhill, Swansea, SA1 6TW
Sold Mar 2021
£98,00019 Gwili Terrace, Mayhill, Swansea, SA1 6TW
Sold Sept 2019
£83,000
Versus other Gwili Terrace homes
On price per m², 30 Gwili Terrace stands well clear of the street.
Price per m²
£1,488
Street avg £1,007
Floor Area
84 m²
Street avg 76 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.5 t/year
Street avg 3.5 t/year
Similar properties nearby
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1 2, Flat 8, Brooklands Terrace
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1 Baptist Well Place
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1 2, Flat 6, St James Crescent
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1 Berw Road, Mayhill
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1 2, Flat 3, St James Crescent
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The neighbourhood at a glance
Crime
580/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Gors Avenue — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







