12 Northfield Road, Kings Norton, Birmingham, B30 1JH

12 Northfield Road is a two-bedroom semi-detached house in Kings Norton, Birmingham, Birmingham (B30 1JH). It has a recorded floor area of 13 m² (around 140 sq ft), construction records dating it to 1900-1929 and council tax band B. At 13 m² this is the smallest unit on EPC record across the building (13–196 m²). The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (76 versus a worst of 34). The latest certificate (June 2018) shows a C (score 76), near the top of the C band. When first surveyed in October 2009 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Very Good, lighting went from Good to Very Good and main heating went from Average to Very Good.

It hasn't traded since June 2010, a hold of 16 years that's notably long for the area. Across the public record there are 4 sales, relatively high churn for a single property. Across 1995–2010, sale prices on this property compounded at 7.6% per year. Today's modelled estimate of £280,000 sits 91.8% above the 2010 sale of £146,000. On a £-per-square-foot basis, the last sale (£1,043/sq ft) was about 484.5% above the typical sold price in the postcode. At 13 m² it sits well below the postcode median (132 m² across 20 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). One planning record on file: an extension approved in 2018. Past consents include an extension, meaningful when judging how the property has evolved.