7 Heol Callwen, Penycae, Swansea, SA9 1GR
About 7 Heol Callwen
7 Heol Callwen is a semi-detached house in Penycae, Swansea, Swansea (SA9 1GR). It has a recorded floor area of 105 m² (around 1130 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (March 2017) shows an F (score 35), near the bottom of the EPC scale. Earlier certificates rated it D (June 2009); the latest reading is 2 bands lower. Between certificates, roof efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to A (score 94), a 5-band jump. Main heating runs on oil.
At 105 m² it's 28% larger than the typical home in the postcode (82 m² median across 9 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 89% of similar EPCs). Today's modelled estimate of £189,000 is 26% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£133/sq ft) was about 46.2% above the typical sold price in the postcode. 8 years since the last transfer (May 2018). 2 planning records sit against the property, 1 approved, 0 refused.
Know exactly what you're buying at 7 Heol Callwen
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
7 Heol Callwen's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Loft insulation upgraded to recommended levels
Heating controls upgraded for better temperature management
Hot water efficiency improved
Heating controls changed
Roof insulation improved
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Planning history
- Mar 2015OutbuildingFullIn report
Erection of hay, tractor and tool storage shed
- Agent
- AEDES
- Documents
- 23 docs on file
- Reference
- 15/11781/FUL
- Oct 2014OutbuildingOtherIn report
Timber frame, timber clad building with box profile and clear GRP sheet roof for the purposes of hay and tractor storage, and sheep shelter during adverse weather conditions.
- Agent
- AEDES
- Reference
- 14/11339/AGR
We flagged 1 thing worth checking at 7 Heol Callwen
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
7 Heol Callwen valuation sits well clear of the typical sold price in this postcode.
£189,000
Modelled from EPC, postcode comparables.
£150,000
Recorded with HM Land Registry.
Sales timeline
31 May 2018Most recent
£150,000
Median price across the last 5 sales in SA9 1GR: £160,000 (2022–2013).
Nearby sales in SA9 1GR
3 Heol Callwen, Penycae, Swansea, SA9 1GR
Sold Nov 2022
£165,0008 Heol Callwen, Penycae, Swansea, SA9 1GR
Sold Sept 2022
£160,000Ty Carreg, Heol Callwen, Penycae, Swansea, SA9 1GR
Sold Jun 2017
£1,0004 Heol Callwen, Penycae, Swansea, SA9 1GR
Sold Jan 2016
£100,000Ty Gwyn, Heol Callwen, Penycae, Swansea, SA9 1GR
Sold Jun 2013
£210,000
Everything we know about 7 Heol Callwen, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Heol Callwen homes
7 Heol Callwen is notably below the street on epc rating.
Price per m²
£1,429
Street avg £1,364
Floor Area
105 m²
Street avg 86 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
9.3 t/year
Street avg 5.3 t/year
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Field Study Centre — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.