11 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
About 11 Heol Dewi Sant
11 Heol Dewi Sant is a semi-detached house in Penllergaer, Swansea, Swansea (SA4 9BD). It has a recorded floor area of 92 m² (around 990 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (March 2026) shows a C (score 69), just inside the C band. When first surveyed in July 2025 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Poor to Good, window efficiency went from Poor to Average and hot-water efficiency went from Poor to Good. This certificate was lodged in the last six months, so the rating reflects current condition.
At 92 m² the property is well over the postcode median (65 m² across 30 EPCs), placing it in the larger end of the local stock. Across 2025–2025, sale prices on this property compounded at 14.7% per year. Today's modelled estimate of £191,000 sits 75.2% above the 2025 sale of £109,000. On a £-per-square-foot basis, the last sale (£110/sq ft) was about 35.2% above the typical sold price in the postcode. It changed hands recently, sold November 2025 for £109,000.
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 27 March 2036
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Cavity wall insulation installed
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Planning history
11 Heol Dewi Sant 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
11 Heol Dewi Sant changed hands twice within eighteen months — unusual for the area.
£191,000
Modelled from EPC, postcode comparables and a sale-price growth of 14.7% per year over 1 year.
£109,000
Growth on file: 14.7% per year over 1 year.
Sales timeline
25 November 2025Most recent
£109,000
+14.7%25 September 2025
£95,000
Median price across the last 5 sales in SA4 9BD: £145,000 (2025–2016).
Nearby sales in SA4 9BD
19 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Oct 2025
£220,0007 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Oct 2024
£200,00028 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Sept 2024
£87,50025 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Dec 2019
£145,00020 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Feb 2016
£66,000
Versus other Heol Dewi Sant homes
11 Heol Dewi Sant is notably below the street on years held.
Price per m²
£1,185
Street avg £1,248
Floor Area
92 m²
Street avg 95 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.0 t/year
Street avg 3.7 t/year
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The neighbourhood at a glance
Crime
160/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Heol Dewi Sant — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







