12a, Challoners Close, Rottingdean, Brighton, BN2 7DG

12a is a detached house in Rottingdean, Brighton, Brighton (BN2 7DG). It has a recorded floor area of 78 m² (around 840 sq ft) and construction records dating it to 1967-1975. At 78 m² this is the smallest unit on EPC record across the building (78–224 m²). The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (October 2012) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 76). The latest certificate is from October 2012, so improvements made since then won't be reflected.

Held since June 1998 — that's 28 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £314,000 sits 748.6% above the 1998 sale of £37,000. On a £-per-square-foot basis, the last sale (£44/sq ft) was about 89.4% below the postcode norm. At 78 m² it sits well below the postcode median (187 m² across 6 EPCs), making it one of the more compact homes locally.