Flat 3, 18 Park Street, Towcester, NN12 6DQ

Flat 3 is a two-bedroom mid-terrace house in Towcester (NN12 6DQ). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to before 1900 and council tax band A. At 36 m² this is the smallest unit on EPC record across the building (36–45 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (57 versus a best of 69). The latest certificate (November 2016) shows a D (score 57), a step below the typical UK home. When first surveyed in December 2008 the rating was G, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Very Poor to Good. The recommended improvements would push it to C (score 73). Main heating runs on electricity.

2 planning records sit against the property, 1 approved, 1 refused. Past consents include new windows, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Across 2012–2017, sale prices on this property compounded at -1.2% per year. Today's modelled estimate of £150,000 is 27.1% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£305/sq ft) was about 35.1% above the typical sold price in the postcode. Last changed hands 9 years ago, in July 2017. At 36 m² it's 25.8% smaller than the typical home in the postcode (49 m² median across 22 EPCs).