8a, Penrhyn Terrace, Bethesda, Bangor, LL57 3NB

8a is a three-bedroom mid-terrace house in Bethesda, Bangor, Bangor (LL57 3NB). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (December 2023) shows an E (score 43), well below the UK norm with real room to improve. When first surveyed in January 2009 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average and lighting went from Very Poor to Good. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity. At 43 m² this is the 10th smallest of 21 units on EPC record in the building, where floor areas span 32–83 m². The building's EPC ratings span F to C across 21 units on file.

Untraded for 16 years, with the last transfer in September 2010. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). On a £-per-square-foot basis, the last sale (£341/sq ft) was about 357.8% above the typical sold price in the postcode.