4 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
About 4 Derwlas
4 Derwlas is a detached house in Penllergaer, Swansea, Swansea (SA4 9SF). It has a recorded floor area of 121 m² (around 1302 sq ft), construction records dating it to 1996-2002 and council tax band E. The latest certificate (February 2025) shows a C (score 71). The recommended improvements would push it to B (score 84).
At 121 m² the property is well over the postcode median (89 m² across 6 EPCs), placing it in the larger end of the local stock. Across 1997–2017, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £350,000 sits 53.5% above the 2017 sale of £228,000. On a £-per-square-foot basis, the last sale (£175/sq ft) was about 86.8% above the typical sold price in the postcode. On the market in November 2017 and unlisted since — roughly 9 years. Across the public record there are 5 sales, relatively high churn for a single property.
Energy performance
EPC Rating
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Planning history
4 Derwlas 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
4 Derwlas has more than doubled in price since the earliest registered sale in 1997.
£350,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 20 years.
£228,000
Growth on file: 4.4% per year over 20 years.
Sales timeline
13 November 2017Most recent
£228,000
+26.7%over 8 years29 April 2009
£180,000
20 October 2005
£179,950
-4.0%1 August 2005
£187,500
+98.4%over 8 years15 May 1997
£94,500
Median price across the last 5 sales in SA4 9SF: £189,995 (2025–2012).
Nearby sales in SA4 9SF
12 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold May 2025
£190,0003 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold Oct 2021
£240,0001 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold Oct 2019
£189,99511 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold Dec 2012
£130,0002 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold May 2012
£165,000
Versus other Derwlas homes
EPC Rating for 4 Derwlas runs comfortably ahead of the street norm.
Price per m²
£1,884
Street avg £1,942
Floor Area
121 m²
Street avg 99 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.7 t/year
Street avg 3.5 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Tircoed Terminus — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







