Flat 3, 1 Thurlow Hill, London, SE21 8JW

Flat 3 is a semi-detached house in London (SE21 8JW). It has a recorded floor area of 105 m² (around 1130 sq ft) and construction records dating it to before 1900. At 105 m² this is the largest unit on EPC record across the building (48–105 m²). The latest certificate (November 2017) shows a D (score 57), a step below the typical UK home. The rating has held steady at D across 2 certificates since February 2010. Between certificates, wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Poor to Very Poor.

At 105 m² the property is well over the postcode median (69 m² across 35 EPCs), placing it in the larger end of the local stock. Most recent transfer was May 2025 at £512,000 — fresh data. Across 2002–2025, sale prices on this property compounded at 4.3% per year. Today's modelled estimate of £582,000 is 13.7% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£453/sq ft) was about 63.4% above the typical sold price in the postcode.