30a, Vicarage Road, Watford, WD18 0EH

30a is a two-bedroom end-of-terrace house in Watford (WD18 0EH). It has a recorded floor area of 69 m² (around 747 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (December 2010) shows a D (score 58), a step below the typical UK home. When first surveyed in June 2009 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Poor to Average and hot-water efficiency went from Average to Very Good. The latest certificate is from December 2010, so improvements made since then won't be reflected. At 69 m² this is the 6th smallest of 8 units on EPC record in the building, where floor areas span 52–77 m². The building's EPC ratings span F to C across 8 units on file. Other recorded features include a balcony.

Untraded for 17 years, with the last transfer in August 2009. 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 7.2% per year. Today's modelled estimate of £260,000 sits 103.1% above the 2009 sale of £128,000. On a £-per-square-foot basis, the last sale (£171/sq ft) was about 39% below the postcode norm.