1a Portland House, Arnison Avenue, High Wycombe, HP13 6DQ

1a Portland House is an end-of-terrace house in High Wycombe (HP13 6DQ). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1976-1982 and council tax band B. At 58 m² this is the 3rd smallest of 5 units on EPC record in the building, where floor areas span 50–58 m². The building's EPC ratings span E to D, with this unit at the top. On EPC score it ranks first in the building (67 versus a worst of 40). The latest certificate (June 2022) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 70).

Held since February 2008 — that's 18 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2004–2008, sale prices on this property compounded at 5.2% per year. Today's modelled estimate of £222,000 sits 51% above the 2008 sale of £147,000.