15 Barrett Close, King's Lynn, PE30 4UQ

15 Barrett Close is an end-of-terrace house in King's Lynn (PE30 4UQ). It has a recorded floor area of 25 m² (around 269 sq ft), construction records dating it to 1976-1982 and council tax band A. At 25 m² this is the 3rd smallest of 31 units on EPC record in the building, where floor areas span 24–69 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (June 2021) shows an E (score 52), well below the UK norm with real room to improve. Earlier certificates rated it D (September 2009); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 78), a 2-band jump. Main heating runs on electricity.

Across 2010–2018, sale prices on this property compounded at 1% per year. Today's modelled estimate of £118,000 sits 118.5% above the 2018 sale of £54,000. On a £-per-square-foot basis, the last sale (£201/sq ft) was about 36.6% above the typical sold price in the postcode. At 25 m² it sits well below the postcode median (41 m² across 30 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs). Last sold in May 2018, so it's been off the market for around 8 years.