First Floor Flat, 4 Smyrna Road, London, NW6 4LY

First Floor Flat is a mid-terrace house in London (NW6 4LY). It has a recorded floor area of 45 m² (around 484 sq ft) and construction records dating it to 1900-1929. The latest certificate (February 2021) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since March 2010. Between certificates, window efficiency dropped from Poor to Very Poor and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 77).

Held since January 2011 — that's 15 years off the open market, well above the local norm. Across 2002–2011, sale prices on this property compounded at 5.9% per year. Today's modelled estimate of £615,000 is 25.5% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£1,012/sq ft) was about 71.2% above the typical sold price in the postcode.