11a, Jamaica Road, Thornton Heath, CR7 7HD

11a is a three-bedroom detached house in Thornton Heath (CR7 7HD). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to 1900-1929 and council tax band E. At 65 m² this is the 5th smallest of 17 units on EPC record in the building, where floor areas span 49–120 m². The building's EPC ratings span E to D, with this unit at the bottom. Other recorded features include a conservatory. The latest certificate (March 2013) shows an E (score 54), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 76), a 2-band jump. The latest certificate is from March 2013, so improvements made since then won't be reflected.

Held since November 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. 4 planning records sit against the property, 3 approved, 1 refused. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. At 65 m² it's 24.6% smaller than the typical home in the postcode (86 m² median across 16 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Today's modelled estimate of £347,000 is 38.9% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£357/sq ft) was about 63.7% above the typical sold price in the postcode.