19b, Clapham High Street, Lambeth, London, SW4 7TS

19b is an end-of-terrace house in Lambeth, London, London (SW4 7TS). It has a recorded floor area of 48 m² (around 517 sq ft) and construction records dating it to before 1900. At 48 m² this is the smallest unit on EPC record across the building (48–95 m²). The building's EPC ratings span E to C across 7 units on file. The latest certificate (January 2026) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 5 certificates since May 2013. Between certificates, roof efficiency went from Poor to Average; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 78). This certificate was lodged in the last six months, so the rating reflects current condition.

Untraded for 29 years, with the last transfer in February 1997. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £502,000 sits 856.2% above the 1997 sale of £52,500. On a £-per-square-foot basis, the last sale (£102/sq ft) was about 75.5% below the postcode norm. At 48 m² it's 26.2% smaller than the typical home in the postcode (65 m² median across 8 EPCs).