21a, New Borough Road, Wimborne, BH21 1RB

21a is a detached house in Wimborne (BH21 1RB). It has a recorded floor area of 92 m² (around 990 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (March 2014) shows a G (score 2), near the bottom of the EPC scale. The recommended improvements would lift it to E (score 48), a 2-band jump. Main heating runs on electricity. The latest certificate is from March 2014, so improvements made since then won't be reflected. At 92 m² this is the 22nd smallest of 29 units on EPC record in the building, where floor areas span 29–213 m². The building's EPC ratings span G to C, with this unit at the bottom. On EPC score it ranks last in the building (2 versus a best of 78).

Untraded for 21 years, with the last transfer in August 2005. At 92 m² the property is well over the postcode median (59 m² across 28 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2000–2005, sale prices on this property compounded at 15.4% per year. Today's modelled estimate of £245,000 sits 69% above the 2005 sale of £145,000. On a £-per-square-foot basis, the last sale (£146/sq ft) was about 23.9% below the postcode norm.