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Get started1 Gefnan is a semi-detached house in Mynydd Llandygai, Bangor, Bangor (LL57 4DJ). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (July 2015) shows a G (score 18), near the bottom of the EPC scale. Earlier certificates rated it C (June 2011); the latest reading is 4 bands lower. Between certificates, wall efficiency dropped from Very Good to Very Poor and roof efficiency dropped from Good to Very Poor. The recommended improvements would lift it to C (score 71), a 4-band jump. Main heating runs on oil. The latest certificate is from July 2015, so improvements made since then won't be reflected.
2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. At 79 m² it's 19.5% smaller than the typical home in the postcode (98 m² median across 11 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs).
1 Gefnan's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 28 Jul 2025
1 Gefnan has an approved single-storey side extension on the planning record.
Creu milodfa yng nghefn yr eiddo ar gyfer defnydd personnol/Construction of a menage to rear of property for personal use.
1 Gefnan has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£219,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
On co₂ emissions, 1 Gefnan runs well behind the street norm.
EPC Rating
18 (G)
Street avg 45 (E)
Floor Area
79 m²
Street avg 116 m²
CO₂ Emissions
11.0 t/year
Street avg 6.4 t/year
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.5 km
Mynydd Llandygai — bus stop.
Extension: Single storey · Side of property
Estyniad un llawr ar dalcen yr eiddo/Single storey extension to the side of the property.
Median price across the last 5 sales in LL57 4DJ: £295,000 (2024–2017).
Habitable Rooms
4 rooms
Street avg 5 rooms
LL57 4AZ