13a, Adelaide Street, Maltby, Rotherham, S66 7JF

13a is a one-bedroom end-of-terrace house in Maltby, Rotherham, Rotherham (S66 7JF). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1900-1929 and council tax band A. At 42 m² this is the smallest unit on EPC record across the building (42–103 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (July 2022) shows a C (score 71). When first surveyed in March 2012 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor; while roof efficiency dropped from Good to Average.

Held since September 2007 — that's 19 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. Today's modelled estimate of £103,000 sits 119.6% above the 2007 sale of £46,900. On a £-per-square-foot basis, the last sale (£104/sq ft) was about 82.2% above the typical sold price in the postcode. At 42 m² it sits well below the postcode median (83 m² across 26 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 85% of similar EPCs).