Basement Flat, 14 Withipoll Street, Ipswich, IP4 2BZ

Basement Flat is a mid-terrace house in Ipswich (IP4 2BZ). It has a recorded floor area of 29 m² (around 312 sq ft) and construction records dating it to before 1900. The latest certificate (January 2022) shows a D (score 64), on the cusp of jumping into the C band. Earlier certificates rated it C (February 2009); the latest reading is one band lower. Between certificates, lighting went from Average to Good; while window efficiency dropped from Good to Poor and hot-water efficiency dropped from Good to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump. Main heating runs on electricity.

Held since February 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £118,000 sits 96.7% above the 2007 sale of £60,000. On a £-per-square-foot basis, the last sale (£192/sq ft) was about 30.8% above the typical sold price in the postcode. At 29 m² it sits well below the postcode median (65 m² across 42 EPCs), making it one of the more compact homes locally.