Clarendon House, Apartment 20, 39 Bridge Street, Northampton, NN1 1NS

Clarendon House is a mid-terrace house in Northampton (NN1 1NS). It has a recorded floor area of 56 m² (around 603 sq ft) and construction records dating it to 1976-1982. At 56 m² this is the 13th smallest of 19 units on EPC record in Clarendon House, where floor areas span 46–64 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (July 2016) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 77). Main heating runs on electricity.

It hasn't traded since March 2001, a hold of 25 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £128,000 sits 81.6% above the 2001 sale of £70,500. On a £-per-square-foot basis, the last sale (£117/sq ft) was about 16% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).