11a, Blenheim Grove, Southwark, London, SE15 4QS

11a is a one-bedroom mid-terrace house in Southwark, London, London (SE15 4QS). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (April 2024) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2010); the latest reading is one band lower. Between certificates, roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to C (score 69). At 42 m² this is the 9th smallest of 36 units on EPC record in the building, where floor areas span 33–148 m². The building's EPC ratings span E to C across 36 units on file. Other recorded features include a balcony.

7 planning records sit against the property, 2 approved, 4 refused. Past consents include an extension and new windows, meaningful when judging how the property has evolved. Across 2007–2024, sale prices on this property compounded at 3.8% per year. On a £-per-square-foot basis, the last sale (£1,228/sq ft) was about 339.9% above the typical sold price in the postcode. At 42 m² it's 22.2% smaller than the typical home in the postcode (54 m² median across 35 EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Most recent transfer: April 2024 at £555,000.