12 Gloucester House, Queen Street, Portsmouth, PO1 3GD

12 Gloucester House is a two-bedroom mid-terrace house in Portsmouth (PO1 3GD). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 2003-2006 and council tax band D. At 86 m² this is the largest unit on EPC record across the building (7–86 m²). The building's EPC ratings span D to B across 22 units on file. The latest certificate (February 2021) shows a C (score 80), near the top of the C band. Earlier certificates rated it B (January 2011); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good and main heating went from Poor to Average; while window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 84). Main heating runs on electricity.

At 86 m² the property is well over the postcode median (51 m² across 21 EPCs), placing it in the larger end of the local stock. Across 2007–2016, sale prices on this property compounded at 0.7% per year. On a £-per-square-foot basis, the last sale (£235/sq ft) was about 20.9% below the postcode norm. 10 years since the last transfer (May 2016).