Chalkdell House, Flat 4, 42 Loweswater Close, Watford, WD25 0TA

Chalkdell House is a one-bedroom mid-terrace house in Watford (WD25 0TA). It has a recorded floor area of 45 m² (around 481 sq ft) and construction records dating it to 2003-2006. The latest certificate (February 2011) returns a high B (score 85), putting the home a stone's throw from an A rating. The latest certificate is from February 2011, so improvements made since then won't be reflected. At 45 m² this is the 3rd smallest of 27 units on EPC record in Chalkdell House, where floor areas span 41–68 m². The building's EPC ratings span C to B, with this unit at the top.

Held since November 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2004–2007, sale prices on this property compounded at 6.1% per year. Today's modelled estimate of £240,000 is 45.9% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£342/sq ft) was about 25% above the typical sold price in the postcode. At 45 m² it's 20.2% smaller than the typical home in the postcode (56 m² median across 26 EPCs).