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Get started18 Trewen is an end-of-terrace house in Groeslon, Caernarfon, Caernarfon (LL54 7SY). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (May 2025) shows a D (score 68), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 83), a 2-band jump.
Recommended upgrades on file would lift this property by multiple EPC bands.
18 Trewen has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£152,000
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, 18 Trewen runs well behind the street norm.
EPC Rating
68 (D)
Street avg 67 (D)
Floor Area
88 m²
Street avg 83 m²
CO₂ Emissions
3.9 t/year
Street avg 3.1 t/year
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Bryn Neaudd — bus stop.
Median price across the last 5 sales in LL54 7SY: £120,000 (2025–2006).
Habitable Rooms
4 rooms
Street avg 5 rooms