12 Ogwen Terrace, High Street, Bethesda, Bangor, LL57 3AY

12 Ogwen Terrace is a three-bedroom mid-terrace house in Bethesda, Bangor, Bangor (LL57 3AY). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (June 2025) shows an E (score 44), well below the UK norm with real room to improve. Earlier certificates rated it C (January 2010); the latest reading is 2 bands lower. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Poor to Very Good; while hot-water efficiency dropped from Very Good to Very Poor and main heating dropped from Very Good to Very Poor. The recommended improvements would lift it to C (score 79), a 2-band jump. Main heating runs on electricity. At 50 m² this is the 4th smallest of 19 units on EPC record in the building, where floor areas span 37–240 m². The building's EPC ratings span F to C across 19 units on file.

Held since November 2004 — that's 21 years off the open market, well above the local norm. At 50 m² it sits well below the postcode median (116 m² across 18 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £147,000 is 39.3% above the 2004 sale price. On a £-per-square-foot basis, the last sale (£196/sq ft) was about 206.7% above the typical sold price in the postcode.