Flat 4, 25 Langley Road, Watford, WD17 4PR

Flat 4 is a one-bedroom end-of-terrace house in Watford (WD17 4PR). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (September 2019) shows an E (score 49), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since July 2009. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Very Poor to Average and main heating went from Poor to Average; while lighting dropped from Good to Average. The recommended improvements would lift it to C (score 78), a 2-band jump. Main heating runs on electricity.

Held since November 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Across 1997–2009, sale prices on this property compounded at 8.1% per year. Today's modelled estimate of £213,000 sits 57.8% above the 2009 sale of £135,000. On a £-per-square-foot basis, the last sale (£292/sq ft) was about 24.9% below the postcode norm.