15 Dayrell Square, Northampton, NN4 9RJ

15 Dayrell Square is a two-bedroom detached house in Northampton (NN4 9RJ). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1976-1982 and council tax band A. At 56 m² this is the 2nd smallest of 9 units on EPC record in the building, where floor areas span 46–101 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (December 2020) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since December 2010. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Good to Average. The recommended improvements would push it to C (score 74).

Across 2004–2015, sale prices on this property compounded at 1.6% per year. Today's modelled estimate of £143,000 sits 83.3% above the 2015 sale of £78,000. At 56 m² it sits well below the postcode median (84 m² across 8 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Last sold in October 2015, so it's been off the market for around 11 years.