20 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
About 20 Heol Dewi Sant
20 Heol Dewi Sant is a two-bedroom semi-detached house in Penllergaer, Swansea, Swansea (SA4 9BD). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1967-1975 and council tax band A. At 61 m² this is the 4th smallest of 31 units on EPC record in the building, where floor areas span 30–138 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (January 2021) shows a C (score 71). The rating has held steady at C across 2 certificates since February 2010. Between certificates, window efficiency went from Very Poor to Average.
Across 2001–2016, sale prices on this property compounded at 9% per year. Today's modelled estimate of £109,000 sits 65.2% above the 2016 sale of £66,000. On a £-per-square-foot basis, the last sale (£101/sq ft) was about 16.8% above the typical sold price in the postcode. Last sold in February 2016, so it's been off the market for around 10 years. Across the public record there are 4 sales, relatively high churn for a single property. 2 bedrooms is on the smaller side for this postcode, where 4 is the typical count.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenYes
Building
- Heating systemGas
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Single glazing replaced with double or better glazing
More low energy lighting installed
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Planning history
20 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
20 Heol Dewi Sant has more than tripled in price since its earliest registered sale in 2001.
£109,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.0% per year over 15 years.
£66,000
Growth on file: 9.0% per year over 15 years.
Sales timeline
25 February 2016Most recent
£66,000
-12.0%over 8 years18 October 2007
£75,000
+163.2%over 4 years4 December 2002
£28,500
+54.1%over 1 year31 May 2001
£18,500
Median price across the last 5 sales in SA4 9BD: £145,000 (2025–2019).
Nearby sales in SA4 9BD
19 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Oct 2025
£220,00011 Heol Dewi Sant, Penllergaer, Swansea, SA4 9BD
Sold Sept 2025
£95,0007 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
£145,000
Versus other Heol Dewi Sant homes
20 Heol Dewi Sant outperforms the street on habitable rooms by a wide margin.
EPC Rating
71 (C)
Street avg 69 (C)
Floor Area
61 m²
Street avg 61 m²
CO₂ Emissions
2.1 t/year
Street avg 2.4 t/year
Habitable Rooms
4 rooms
Street avg 3 rooms
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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
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.







