18 Jupiter Court, Gunwharf Quays, Portsmouth, PO1 3TS

18 Jupiter Court is a three-bedroom semi-detached house in Portsmouth (PO1 3TS). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 2003-2006 and council tax band F. The latest certificate (July 2022) returns a B (score 82), comfortably above the UK average. When first surveyed in November 2009 the rating was C, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, window efficiency went from Average to Good and lighting went from Average to Very Good. At 108 m² this is the 28th smallest of 30 units on EPC record in the building, where floor areas span 42–143 m². The building's EPC ratings span D to B, with this unit at the top. Other recorded features include a balcony.

Held since August 2003 — that's 23 years off the open market, well above the local norm. At 108 m² the property is well over the postcode median (69 m² across 29 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Across 2000–2003, sale prices on this property compounded at 12.5% per year. Today's modelled estimate of £489,000 is 20.7% above the 2003 sale price.