203a, Gloucester Place, Westminster, London, NW1 6BU

203a is a property in Westminster, London, London (NW1 6BU). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 1900-1929 and council tax band F. At 78 m² this is the 12th smallest of 14 units on EPC record in the building, where floor areas span 10–394 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (46 versus a best of 78). The latest certificate (November 2025) shows an E (score 46), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 56). Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.

Today's modelled estimate of £822,000 is 66.1% below the 2020 sale of £2,425,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£2,888/sq ft) was about 227.5% above the typical sold price in the postcode. At 78 m² the property is well over the postcode median (20 m² across 52 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sale on file: £2,425,000 in November 2020.