10 Alnwick Close, Langdon Hills, Basildon, SS16 6NZ

10 Alnwick Close is an end-of-terrace house in Langdon Hills, Basildon, Basildon (SS16 6NZ). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1976-1982 and council tax band C. At 42 m² this is the 3rd smallest of 12 units on EPC record in the building, where floor areas span 40–123 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (February 2020) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since December 2009. Between certificates, lighting went from Very Poor to Very Good and main heating went from Poor to Average; while wall efficiency dropped from Good to Average and roof efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 74). Main heating runs on electricity.

At 42 m² it sits well below the postcode median (61 m² across 11 EPCs), making it one of the more compact homes locally. Across 1997–2011, sale prices on this property compounded at 6.9% per year. Today's modelled estimate of £212,000 is 48.8% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£315/sq ft) was about 65.7% above the typical sold price in the postcode. 15 years since the last transfer (July 2011).