28a, The Green, Swanwick, Alfreton, DE55 1AN

28a is an end-of-terrace house in Swanwick, Alfreton, Alfreton (DE55 1AN). It has a recorded floor area of 35 m² (around 377 sq ft) and construction records dating it to 1900-1929. At 35 m² this is the smallest unit on EPC record across the building (35–138 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (April 2019) shows a C (score 70). When first surveyed in August 2009 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Good and window efficiency went from Very Poor to Average; while lighting dropped from Very Good to Average.

At 35 m² it sits well below the postcode median (74 m² across 12 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs). Sold October 2018 for £125,000. Across the public record there are 4 sales, relatively high churn for a single property. Across 2002–2018, sale prices on this property compounded at 4.1% per year. On a £-per-square-foot basis, the last sale (£332/sq ft) was about 269.1% above the typical sold price in the postcode.