40 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH

40 Blake House is a two-bedroom end-of-terrace house in Portsmouth (PO1 3TH). It has a recorded floor area of 113 m² (around 1216 sq ft), construction records dating it to 2007-2011 and council tax band E. The latest certificate (July 2024) shows a D (score 64), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2012); the latest reading is one band lower. Between certificates, roof efficiency went from Average to Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. Main heating runs on electricity. At 113 m² this is the 39th smallest of 43 units on EPC record in the building, where floor areas span 52–155 m². The building's EPC ratings span E to B across 43 units on file. Other recorded features include a balcony.

Across 2017–2025, sale prices on this property compounded at 1.7% per year. Today's modelled estimate of £710,000 is 10.6% below the 2025 sale of £794,500, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£653/sq ft) was about 92.1% above the typical sold price in the postcode. At 113 m² it's 20.2% larger than the typical home in the postcode (94 m² median across 42 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 74% of similar EPCs). Sold January 2025 for £794,500.