Clarendon House, Apartment 9, 39 Bridge Street, Northampton, NN1 1NS

Clarendon House is a one-bedroom mid-terrace house in Northampton (NN1 1NS). It has a recorded floor area of 47 m² (around 506 sq ft) and construction records dating it to 1976-1982. The latest certificate (February 2020) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since February 2010. Between certificates, lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 83). Main heating runs on electricity. At 47 m² this is the 3rd 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 across 19 units on file.

Sold April 2021 for £90,000. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2001–2021, sale prices on this property compounded at 2.6% per year. Today's modelled estimate of £109,000 is 21.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£178/sq ft) was about 30.7% above the typical sold price in the postcode. At 47 m² it's 15.2% smaller than the typical home in the postcode (55 m² median across 21 EPCs).