Flat 1, 6 St James Street, Monmouth, NP25 3DL

Flat 1 is a two-bedroom mid-terrace house in Monmouth (NP25 3DL). It has a recorded floor area of 62 m² (around 667 sq ft) and construction records dating it to before 1900. The latest certificate (January 2016) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 77). The latest certificate is from January 2016, so improvements made since then won't be reflected.

Held since June 2010 — that's 16 years off the open market, well above the local norm. Today's modelled estimate of £155,000 sits 64.9% above the 2010 sale of £94,000. On a £-per-square-foot basis, the last sale (£141/sq ft) was about 29% below the postcode norm. At 62 m² it's 25.3% smaller than the typical home in the postcode (83 m² median across 21 EPCs).