27b, High Street, Wallingford, OX10 0BU

27b is a mid-terrace house in Wallingford (OX10 0BU). It has a recorded floor area of 21 m² (around 226 sq ft), construction records dating it to before 1900 and council tax band A. At 21 m² this is the smallest unit on EPC record across the building (21–49 m²). On EPC score it ranks first in the building (65 versus a worst of 57). The latest certificate (January 2023) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in November 2019 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Very Good. The recommended improvements would lift it to B (score 85), a 2-band jump. Main heating runs on electricity.

Held since December 1996 — 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 £173,000 sits 216% above the 1996 sale of £54,750. On a £-per-square-foot basis, the last sale (£242/sq ft) was about 28.9% below the postcode norm. At 21 m² it sits well below the postcode median (36 m² across 3 EPCs), making it one of the more compact homes locally.