12 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD
About 12 Heol Tredeg
12 Heol Tredeg is a five-bedroom detached house in Upper Cwmtwrch, Swansea, Swansea (SA9 2XD). It has a recorded floor area of 203 m² (around 2185 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (September 2022) shows an F (score 33), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 77), a 3-band jump. Main heating runs on oil. Other recorded features include notable views. Period features are noted in the property record.
At 203 m² the property is well over the postcode median (95 m² across 17 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. On a £-per-square-foot basis, the last sale (£186/sq ft) was about 78% above the typical sold price in the postcode. Last sale on file: £407,000 in April 2024. One historical planning record sits against the property in 2008.
Know exactly what you're buying at 12 Heol Tredeg
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Bathrooms2
- Dining roomYes
Outside
- GarageYes
- Notable viewsYes
Building
- Period featuresYes
Energy performance
12 Heol Tredeg's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Jul 2008New BuildOutlineIn report
Outline: Erection of a single dwelling and creation of new access
- Agent
- Roger Roberts & Co
- Documents
- 1 doc on file
- Reference
- P/2008/0761
What's in 12 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
Latest sale on 12 Heol Tredeg was the highest on Land Registry record across the postcode.
£398,000
Modelled from EPC, postcode comparables.
£407,000
Recorded with HM Land Registry.
Sales timeline
4 April 2024Most recent
£407,000
Median price across the last 5 sales in SA9 2XD: £162,000 (2025–2022).
Nearby sales in SA9 2XD
18 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD
Sold Jan 2025
£80,00015 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD
Sold Oct 2024
£198,00010 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD
Sold Oct 2023
£177,50011 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD
Sold Mar 2022
£162,0006 Heol Tredeg, Upper Cwmtwrch, Swansea, SA9 2XD
Sold Mar 2022
£160,000
Everything we know about 12 Heol Tredeg, 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 Tredeg homes
Floor Area for 12 Heol Tredeg runs comfortably ahead of the street norm.
Price per m²
£2,005
Street avg £1,427
Floor Area
203 m²
Street avg 97 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
15.0 t/year
Street avg 8.1 t/year
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
New Tredegar Arms — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.