40a, High Street, Menai Bridge, LL59 5EF

40a is a mid-terrace house in Menai Bridge (LL59 5EF). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to 1900-1929 and council tax band A. At 68 m² this is the 8th smallest of 22 units on EPC record in the building, where floor areas span 35–184 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (June 2017) shows an E (score 45), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 64).

Held since August 1997 — that's 29 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £145,000 sits 255.8% above the 1997 sale of £40,750. On a £-per-square-foot basis, the last sale (£56/sq ft) was about 63.6% below the postcode norm. At 68 m² it's 16% smaller than the typical home in the postcode (81 m² median across 21 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 76% of similar EPCs).