15a, Hereford Road, Westminster, London, W2 4AB

15a is a mid-terrace house in Westminster, London, London (W2 4AB). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (February 2024) shows an E (score 44), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2014. Between certificates, lighting went from Very Poor to Very Good and main heating went from Very Poor to Poor. The recommended improvements would push it to D (score 60). Main heating runs on electricity. At 43 m² this is the 7th smallest of 14 units on EPC record in the building, where floor areas span 32–312 m². The building's EPC ratings span G to B across 14 units on file.

Held since January 2003 — that's 23 years off the open market, well above the local norm. Across 1998–2003, sale prices on this property compounded at 10.4% per year. Today's modelled estimate of £651,000 sits 86% above the 2003 sale of £350,000. On a £-per-square-foot basis, the last sale (£756/sq ft) was about 20.5% above the typical sold price in the postcode. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs).