13 Sherwyn House, 61 St Georges Street, Norwich, NR3 1BL

13 Sherwyn House is a one-bedroom mid-terrace house in Norwich (NR3 1BL). It has a recorded floor area of 49 m² (around 527 sq ft) and construction records dating it to 1991-1995. The latest certificate (March 2018) returns a B (score 83), comfortably above the UK average. Main heating runs on electricity. At 49 m² this is the 6th smallest of 16 units on EPC record in the building, where floor areas span 36–87 m². The building's EPC ratings span F to B, with this unit at the top. On EPC score it ranks first in the building (83 versus a worst of 34).

Held since February 1999 — that's 27 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 £117,000 sits 290.7% above the 1999 sale of £29,950. On a £-per-square-foot basis, the last sale (£57/sq ft) was about 68.6% below the postcode norm. Its energy rating outperforms most of the postcode (better than 88% of similar EPCs).