Stonehills House, Flat 12, Stonehills, Welwyn Garden City, AL8 6DL

Stonehills House is a one-bedroom end-of-terrace house in Welwyn Garden City (AL8 6DL). It has a recorded floor area of 67 m² (around 721 sq ft) and construction records dating it to 1900-1929. At 67 m² this is the 27th smallest of 35 units on EPC record in Stonehills House, where floor areas span 23–75 m². The building's EPC ratings span E to C, with this unit at the top. Period features are noted in the property record. The latest certificate (March 2020) shows a C (score 69), just inside the C band. When first surveyed in September 2016 the rating was F, the property has climbed 3 bands since. Between certificates, hot-water efficiency went from Very Poor to Poor; while wall efficiency dropped from Very Good to Very Poor and window efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 85). Main heating runs on electricity.

At 67 m² it's 26.4% larger than the typical home in the postcode (53 m² median across 34 EPCs). Its energy rating outperforms most of the postcode (better than 85% of similar EPCs). On the market in March 2017 and unlisted since — roughly 9 years.