AddressDetailsGrade → potential
Caer Wylan Caernarfon RoadNo certificate on record—
Caswenan, Caernarfon RoadSemi-Detached · 108 m² · EPC 2023D→ BCefn Llwyn Caernarfon RoadNo certificate on record—
Coed Menai Caernarfon RoadNo certificate on record—
Hyfrydle Caernarfon RoadNo certificate on record—
Rhosyr Caernarfon RoadNo certificate on record—
Trecastell Caernarfon RoadNo certificate on record—
Tresco Caernarfon RoadNo certificate on record—
Y Betws, Caernarfon RoadDetached · 137 m² · EPC 2025C→ C7 homes have no certificate on record — recovered from sold-price records, so the postcode is complete even where no EPC has been lodged.