1 Duchess Close, Barnet, London, N11 3PZ

1 Duchess Close is a four-bedroom detached house in Barnet, London, London (N11 3PZ). It has a recorded floor area of 99 m² (around 1066 sq ft), construction records dating it to 1996-2002 and council tax band F. Tenure is freehold. The latest certificate (March 2019) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (March 2009); the latest reading is one band lower. Between certificates, roof efficiency dropped from Very Good to Average and window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 85), a 2-band jump.

Held since March 1997 — that's 29 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 99 m² it's 23.8% larger than the typical home in the postcode (80 m² median across 4 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £747,000 sits 378.9% above the 1997 sale of £155,995. On a £-per-square-foot basis, the last sale (£146/sq ft) was about 38% below the postcode norm.