Tewin Water House, Apartment 5, Tewin Water, Welwyn, AL6 0AA

Tewin Water House is a three-bedroom semi-detached house in Welwyn (AL6 0AA). It has a recorded floor area of 180 m² (around 1938 sq ft), construction records dating it to before 1900 and council tax band G. At 180 m² this is the 2nd smallest of 5 units on EPC record in Tewin Water House, where floor areas span 154–588 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (71 versus a worst of 54). Period features are noted in the property record. The latest certificate (June 2024) shows a C (score 71). The recommended improvements would push it to B (score 82).

At 180 m² it sits well below the postcode median (279 m² across 4 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Across 2001–2014, sale prices on this property compounded at 1.9% per year. Today's modelled estimate of £918,000 is 48.1% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£320/sq ft) was about 25.7% above the typical sold price in the postcode. Last changed hands 12 years ago, in January 2014.