1 Ynys Tre Deg, Upper Cwmtwrch, Swansea, SA9 2XN
About 1 Ynys Tre Deg
1 Ynys Tre Deg is a three-bedroom detached house in Upper Cwmtwrch, Swansea, Swansea (SA9 2XN). It has a recorded floor area of 116 m² (around 1249 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (July 2025) returns a B (score 84), comfortably above the UK average. When first surveyed in September 2013 the rating was G, the property has climbed 5 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Average to Very Good and hot-water efficiency went from Very Poor to Average; while window efficiency dropped from Average to Poor. The recommended improvements would push it to A (score 103). Main heating runs on electricity.
Untraded for 18 years, with the last transfer in January 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2001–2008, sale prices on this property compounded at 27.5% per year. Today's modelled estimate of £243,000 sits 51.9% above the 2008 sale of £159,950.
Know exactly what you're buying at 1 Ynys Tre Deg
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
- Bedrooms3
Energy performance
1 Ynys Tre Deg's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Switched from solid fuel to cleaner energy source
Heating controls upgraded for better temperature management
Hot water system upgraded
Wall insulation improved
Roof insulation improved
More low energy lighting installed
Heat pump installed, significantly improving energy efficiency
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Loft insulation upgraded to recommended levels
Planning history
1 Ynys Tre Deg has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Price for 1 Ynys Tre Deg has grown more than fourfold since the 2001 starting point.
£243,000
Modelled from EPC, postcode comparables and a sale-price growth of 27.5% per year over 6 years.
£159,950
Growth on file: 27.5% per year over 6 years.
Sales timeline
9 January 2008Most recent
£159,950
+344.3%over 6 years16 November 2001
£36,000
Median price across the last 2 sales in SA9 2XN: £104,150 (2018–2018).
Everything we know about 1 Ynys Tre Deg, 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?
Similar properties nearby
1 Crimea Court, Graig Newydd, Godrergraig
SA9 2DT
1 Dan Y Graig Cottages, Felinfach, Ystradowen
SA9 2XT
1 Cadfan Villas, Swanfield, Ystalyfera
SA9 2JE
1 Clyngwyn Road, Ystalyfera
SA9 2AE
1 Caedu Road, Cwmllynfell
SA9 2FQ
1 Bethel Road, Lower Cwmtwrch
SA9 2PS
1 Brynawel Terrace, Ystradowen
SA9 2YT
1 Ffordd Glandwr, Ystalyfera
SA9 2ER
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Berrington Hill — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.