49a, Roxborough Park, Harrow, HA1 3BA

49a is a one-bedroom semi-detached house in Harrow (HA1 3BA). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (October 2018) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in October 2008 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Good, lighting went from Very Poor to Very Good and main heating went from Poor to Good. The recommended improvements would push it to C (score 76). At 46 m² this is the 7th smallest of 41 units on EPC record in the building, where floor areas span 34–191 m². The building's EPC ratings span F to C across 41 units on file.

Held since April 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 £308,000 sits 66.5% above the 2007 sale of £185,000. At 46 m² it's 17.9% smaller than the typical home in the postcode (56 m² median across 40 EPCs).