15a, Hanley Road, London, N4 3DU

15a is a mid-terrace house in London (N4 3DU). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (September 2020) shows a D (score 62), on the cusp of jumping into the C band. Earlier certificates rated it C (January 2009); the latest reading is one band lower. Between certificates, window efficiency went from Very Poor to Average; while wall efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump.

Held since February 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 86 m² the property is well over the postcode median (54 m² across 94 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs). Across 1997–2009, sale prices on this property compounded at 10% per year. Today's modelled estimate of £375,000 sits 146.7% above the 2009 sale of £152,000. On a £-per-square-foot basis, the last sale (£164/sq ft) was about 60.5% below the postcode norm.