5 Highbury Buildings, Flat 2, Portsmouth Road, Cosham, Portsmouth, PO6 2SN

5 Highbury Buildings is a mid-terrace house in Cosham, Portsmouth, Portsmouth (PO6 2SN). It has a recorded floor area of 74 m² (around 797 sq ft) and construction records dating it to 1930-1949. At 74 m² this is the smallest unit on EPC record across the building (74–114 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (64 versus a best of 71). The latest certificate (February 2026) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since December 2012. Between certificates, window efficiency dropped from Average to Poor and lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 80). This certificate was lodged in the last six months, so the rating reflects current condition.

At 74 m² it sits well below the postcode median (115 m² across 12 EPCs), making it one of the more compact homes locally. 4 planning records sit against the property, 1 approved, 0 refused.