22 Grover House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9GD

22 Grover House is a property in Nash Mills Wharf, Hemel Hempstead, Hemel Hempstead (HP3 9GD). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 2012 onwards and council tax band D. The latest certificate (July 2026) returns a B (score 83), comfortably above the UK average. When first surveyed in July 2016 the rating was C, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition. At 75 m² this is the 46th smallest of 52 units on EPC record in the building, where floor areas span 46–91 m². The building's EPC ratings span C to B, with this unit at the top.

At 75 m² it's 23% larger than the typical home in the postcode (61 m² median across 51 EPCs). Its energy rating outperforms most of the postcode (better than 73% of similar EPCs). 10 years since the last transfer (June 2016).