12a, Buller Road, Basildon, SS15 6BA

12a is a two-bedroom semi-detached house in Basildon (SS15 6BA). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1983-1990 and council tax band A. At 54 m² this is the smallest unit on EPC record across the building (54–203 m²). The building's EPC ratings span E to B across 26 units on file. The latest certificate (September 2019) shows a C (score 74). When first surveyed in March 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good and lighting went from Very Poor to Very Good.

Untraded for 17 years, with the last transfer in January 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Across 2000–2009, sale prices on this property compounded at 9.8% per year. Today's modelled estimate of £193,000 sits 75.5% above the 2009 sale of £110,000. At 54 m² it sits well below the postcode median (81 m² across 25 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 84% of similar EPCs).