42 Heol Gwys, Upper Cwmtwrch, Swansea, SA9 2XQ
About 42 Heol Gwys
42 Heol Gwys is a two-bedroom mid-terrace house in Upper Cwmtwrch, Swansea, Swansea (SA9 2XQ). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (October 2022) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 4 certificates since May 2011. Between certificates, window efficiency went from Poor to Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Good to Poor and main heating dropped from Good to Poor. The recommended improvements would lift it to A (score 106), a 3-band jump. Main heating runs on lpg. Period features are noted in the property record.
At 57 m² it sits well below the postcode median (88 m² across 15 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 73% of similar EPCs). Across 1995–2020, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £138,000 is 20% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£187/sq ft) was about 108.8% above the typical sold price in the postcode. Last sale on file: £115,000 in November 2020.
Know exactly what you're buying at 42 Heol Gwys
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms2
- Bathrooms1
- CloakroomYes
- EnsuiteYes
Outside
- Private gardenYes
Building
- Heating systemgas
- Period featuresYes
- RefurbishedYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Windows upgraded, improving insulation
Low energy lighting percentage decreased
Fuel source changed
Heating controls changed
Hot water efficiency decreased
More low energy lighting installed
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
Roof insulation improved
Floor insulation added or improved
Planning history
42 Heol Gwys has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
42 Heol Gwys has more than quadrupled in price since its earliest registered sale in 1995.
£138,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 25 years.
£115,000
Growth on file: 7.3% per year over 25 years.
Sales timeline
27 November 2020Most recent
£115,000
+18.6%over 15 years4 October 2005
£97,000
+56.5%12 May 2005
£62,000
+63.2%over 1 year11 December 2003
£38,000
+73.1%over 4 years25 March 1999
£21,950
+12.6%over 3 years17 October 1995
£19,500
Median price across the last 5 sales in SA9 2XQ: £100,000 (2025–2021).
Nearby sales in SA9 2XQ
38 Heol Gwys, Upper Cwmtwrch, Swansea, SA9 2XQ
Sold Apr 2025
£1,00044 Heol Gwys, Upper Cwmtwrch, Swansea, SA9 2XQ
Sold Jan 2025
£121,00067 Heol Gwys, Upper Cwmtwrch, Swansea, SA9 2XQ
Sold May 2024
£135,00016 Heol Gwys, Upper Cwmtwrch, Swansea, SA9 2XQ
Sold Jan 2024
£100,00040 Heol Gwys, Upper Cwmtwrch, Swansea, SA9 2XQ
Sold Nov 2021
£76,000
Everything we know about 42 Heol Gwys, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Heol Gwys homes
Price per m² for 42 Heol Gwys runs comfortably ahead of the street norm.
Price per m²
£2,018
Street avg £1,127
Floor Area
57 m²
Street avg 91 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
2.2 t/year
Street avg 7.0 t/year
Similar properties nearby
1 Cynwal Terrace, Upper Cwmtwrch
SA9 2UP
1 Carreg Yr Afon, Godrergraig
SA9 2DR
1 Bethel Road, Lower Cwmtwrch
SA9 2PS
1 Brynawel Terrace, Ystradowen
SA9 2YT
1 Caedu Road, Cwmllynfell
SA9 2FQ
1 Cadfan Villas, Swanfield, Ystalyfera
SA9 2JE
1 Dan Y Graig Cottages, Felinfach, Ystradowen
SA9 2XT
1 Crimea Court, Graig Newydd, Godrergraig
SA9 2DT
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Cwmtwrch Rugby Club — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.