100a, Queens Road, Watford, WD17 2NX

100a is a detached house in Watford (WD17 2NX). It has a recorded floor area of 64 m² (around 689 sq ft) and construction records dating it to 1900-1929. The latest certificate (October 2025) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in November 2013 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Poor, hot-water efficiency went from Poor to Good and lighting went from Poor to Very Good; while wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 71). At 64 m² this is the 31st smallest of 47 units on EPC record in the building, where floor areas span 19–123 m². The building's EPC ratings span G to C across 47 units on file.

Untraded for 18 years, with the last transfer in April 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 64 m² the property is well over the postcode median (49 m² across 46 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £300,000 sits 73.4% above the 2008 sale of £173,000.