9 Marlborough House, Holywell Avenue, Whitley Bay, NE26 3AH

9 Marlborough House is an end-of-terrace house in Whitley Bay (NE26 3AH). It has a recorded floor area of 78 m² (around 843 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (April 2011) shows a C (score 80), near the top of the C band. When first surveyed in April 2011 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Average to Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Very Good to Average and main heating dropped from Very Good to Average. The recommended improvements would push it to B (score 84). The latest certificate is from April 2011, so improvements made since then won't be reflected. At 78 m² this is the 9th smallest of 15 units on EPC record in the building, where floor areas span 44–120 m². The building's EPC ratings span D to B across 15 units on file.

Across 2011–2017, sale prices on this property compounded at 4.9% per year. Today's modelled estimate of £262,000 is 20.5% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£258/sq ft) was about 27.5% above the typical sold price in the postcode. On the market in October 2017 and unlisted since — roughly 9 years.