20a, Durham Road West, Bowburn, Durham, DH6 5AU

20a is a one-bedroom mid-terrace house in Bowburn, Durham, Durham (DH6 5AU). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1900-1929 and council tax band A. At 41 m² this is the smallest unit on EPC record across the building (41–207 m²). The building's EPC ratings span F to C, with this unit at the top. The latest certificate (September 2019) shows a C (score 71). When first surveyed in October 2009 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Poor to Good and lighting went from Very Poor to Very Good.

At 41 m² it sits well below the postcode median (103 m² across 23 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 74% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Across 2011–2019, sale prices on this property compounded at 2.6% per year. Today's modelled estimate of £84,000 is 20% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£159/sq ft) was about 157.8% above the typical sold price in the postcode. Most recent transfer: June 2019 at £70,000.