515a, Flat 5, Finchley Road, Camden, London, NW3 7BB

515a is a mid-terrace house in Camden, London, London (NW3 7BB). It has a recorded floor area of 23 m² (around 248 sq ft) and construction records dating it to 1900-1929. The latest certificate (November 2022) shows an E (score 53), well below the UK norm with real room to improve. When first surveyed in December 2011 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average, lighting went from Very Poor to Very Good and main heating went from Poor to Good; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to D (score 66). At 23 m² this is the 3rd smallest of 6 units on EPC record in 515a, where floor areas span 20–24 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 (53 versus a best of 73).

Held since November 1998 — that's 28 years off the open market, well above the local norm. Across 1996–1998, sale prices on this property compounded at 14.7% per year. Today's modelled estimate of £660,000 sits 164% above the 1998 sale of £250,000. On a £-per-square-foot basis, the last sale (£1,010/sq ft) was about 203.6% above the typical sold price in the postcode. At 23 m² it sits well below the postcode median (52 m² across 29 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs). One historical planning record sits against the property in 2003.