Watt House, Flat 4, Knee Hill, Bexley, London, SE2 0AG

Watt House is a two-bedroom end-of-terrace house in Bexley, London, London (SE2 0AG). It has a recorded floor area of 62 m² (around 667 sq ft), construction records dating it to 1950-1966 and council tax band B. At 62 m² this is the 2nd smallest of 5 units on EPC record in Watt House, where floor areas span 54–66 m². The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (79 versus a worst of 58). Other recorded features include a balcony. The latest certificate (August 2025) shows a C (score 79), near the top of the C band. The rating has held steady at C across 4 certificates since May 2010. Between certificates, wall efficiency went from Poor to Average; while lighting dropped from Very Good to Good. The recommended improvements would push it to B (score 81).

Untraded for 15 years, with the last transfer in April 2011. Across 1998–2011, sale prices on this property compounded at 8.1% per year. Today's modelled estimate of £221,000 sits 92.2% above the 2011 sale of £115,000. On a £-per-square-foot basis, the last sale (£172/sq ft) was about 16.6% above the typical sold price in the postcode. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs).