1b, Bolton Road, Harrow, HA1 4SB

1b is a one-bedroom end-of-terrace house in Harrow (HA1 4SB). It has a recorded floor area of 34 m² (around 366 sq ft), construction records dating it to 1900-1929 and council tax band B. At 34 m² this is the smallest unit on EPC record across the building (34–223 m²). The building's EPC ratings span G to C across 38 units on file. The latest certificate (March 2018) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in December 2014 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Good and main heating went from Average to Good. The recommended improvements would push it to C (score 77).

Across 1995–2015, sale prices on this property compounded at 9.2% per year. Today's modelled estimate of £250,000 sits 56.3% above the 2015 sale of £160,000. On a £-per-square-foot basis, the last sale (£437/sq ft) was about 64.7% above the typical sold price in the postcode. At 34 m² it sits well below the postcode median (97 m² across 37 EPCs), making it one of the more compact homes locally. One planning record on file: an extension approved in 2015. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. Last sold in May 2015, so it's been off the market for around 11 years.