Flat 3, 57 Chalk Hill, Watford, WD19 4DA

Flat 3 is a one-bedroom end-of-terrace house in Watford (WD19 4DA). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1900-1929 and council tax band C. At 52 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 50–55 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 (46 versus a best of 73). The latest certificate (October 2012) shows an E (score 46), well below the UK norm with real room to improve. Earlier certificates rated it D (July 2012); the latest reading is one band lower. Between certificates, window efficiency dropped from Average to Very Poor and lighting dropped from Very Good to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump. The latest certificate is from October 2012, so improvements made since then won't be reflected.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2001–2013, sale prices on this property compounded at 3.2% per year. Today's modelled estimate of £283,000 sits 72% above the 2013 sale of £164,500. On a £-per-square-foot basis, the last sale (£294/sq ft) was about 21.1% above the typical sold price in the postcode. 3 planning records sit against the property, 2 approved, 0 refused, 1 pending. Past consents include tree works, meaningful when judging how the property has evolved. An application is currently awaiting a decision. The record references conservation-area consent, which constrain future alterations. Last sold in May 2013, so it's been off the market for around 13 years.