20b, Carnarvon Close, Chippenham, SN14 0PN

20b is a one-bedroom mid-terrace house in Chippenham (SN14 0PN). It has a recorded floor area of 48 m² (around 517 sq ft) and construction records dating it to 1967-1975. At 48 m² this is the smallest unit on EPC record across the building (48–159 m²). The building's EPC ratings span F to C across 16 units on file. The latest certificate (April 2021) shows a D (score 61), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72).

Today's modelled estimate of £126,000 sits 57.5% above the 2021 sale of £80,000. On a £-per-square-foot basis, the last sale (£155/sq ft) was about 41% below the postcode norm. At 48 m² it sits well below the postcode median (96 m² across 15 EPCs), making it one of the more compact homes locally. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Most recent transfer: September 2021 at £80,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.