Clarendon House, Apartment 16, 39 Bridge Street, Northampton, NN1 1NS

Clarendon House is a one-bedroom semi-detached house in Northampton (NN1 1NS). It has a recorded floor area of 54 m² (around 581 sq ft) and construction records dating it to 1983-1990. The latest certificate (July 2020) shows a C (score 74). The rating has held steady at C across 2 certificates since November 2009. Between certificates, hot-water efficiency went from Poor to Average, lighting went from Very Poor to Very Good and main heating went from Poor to Average; while wall efficiency dropped from Very Good to Good and roof efficiency dropped from Good to Average. Main heating runs on electricity. At 54 m² this is the 10th 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.

Last sale on file: £105,000 in April 2021. Across the public record there are 5 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 2.2% per year. Today's modelled estimate of £116,000 is 10.5% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£181/sq ft) was about 31.5% above the typical sold price in the postcode.