16 The Square, Marlowes, Hemel Hempstead, HP1 1ER

16 The Square is a mid-terrace house in Hemel Hempstead (HP1 1ER). It has a recorded floor area of 27 m² (around 291 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (March 2016) shows an E (score 40), well below the UK norm with real room to improve. When first surveyed in March 2010 the rating was G, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Average, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good. The recommended improvements would lift it to C (score 79), a 2-band jump. Main heating runs on electricity. The latest certificate is from March 2016, so improvements made since then won't be reflected. At 27 m² this is the 2nd smallest of 16 units on EPC record in the building, where floor areas span 27–63 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 (40 versus a best of 72).

It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs). Today's modelled estimate of £143,000 is 19.2% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£413/sq ft) was about 118.2% above the typical sold price in the postcode. Last sale on file: £120,000 in September 2020.