4 Junction Mews, Westminster, London, W2 1PN

4 Junction Mews is a three-bedroom mid-terrace house in Westminster, London, London (W2 1PN). It has a recorded floor area of 100 m² (around 1076 sq ft) and construction records dating it to 1930-1949. At 100 m² this is the 8th smallest of 18 units on EPC record in the building, where floor areas span 37–323 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (July 2025) shows a C (score 72). When first surveyed in June 2015 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Poor to Very Poor and window efficiency dropped from Poor to Very Poor.

It hasn't traded since July 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £1,050,000 sits 112.1% above the 2009 sale of £495,000. On a £-per-square-foot basis, the last sale (£460/sq ft) was about 62% below the postcode norm. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). One historical planning record sits against the property in 2009.