1 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
About 1 Derwlas
1 Derwlas is a detached house in Penllergaer, Swansea, Swansea (SA4 9SF). It has a recorded floor area of 93 m² (around 1000 sq ft), construction records dating it to 1996-2002 and council tax band D. The latest certificate (November 2011) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 69). The latest certificate is from November 2011, so improvements made since then won't be reflected.
Across 1997–2019, sale prices on this property compounded at 4.5% per year. Today's modelled estimate of £265,000 is 39.5% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£190/sq ft) was about 102.2% above the typical sold price in the postcode. Most recent transfer: October 2019 at £189,995.
Energy performance
1 Derwlas's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 28 Nov 2021
EPC Rating
Certificate validity
Expired on 28 November 2021
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Planning history
1 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
Sale price has at least doubled since 1997.
£265,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.5% per year over 22 years.
£189,995
Growth on file: 4.5% per year over 22 years.
Sales timeline
17 October 2019Most recent
£189,995
+20.3%over 7 years29 May 2012
£158,000
+125.7%over 15 years1 May 1997
£69,995
Median price across the last 5 sales in SA4 9SF: £190,000 (2025–2012).
Nearby sales in SA4 9SF
12 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold May 2025
£190,00011 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold May 2024
£4,5003 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold Oct 2021
£240,0004 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold Nov 2017
£228,0002 Derwlas, Tircoed Forest Village, Penllergaer, Swansea, SA4 9SF
Sold May 2012
£165,000
Versus other Derwlas homes
On epc rating, 1 Derwlas runs well behind the street norm.
Price per m²
£2,045
Street avg £1,633
Floor Area
93 m²
Street avg 104 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.8 t/year
Street avg 3.5 t/year
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The neighbourhood at a glance
Crime
160/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 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.







