11 Neptune Apartments, Phoebe Road, Copper Quarter, Pentrechwyth, Swansea, SA1 7FL

11 Neptune Apartments is a one-bedroom end-of-terrace house in Pentrechwyth, Swansea, Swansea (SA1 7FL). It has a recorded floor area of 37 m² (around 398 sq ft) and construction records dating it to 2007-2011. The latest certificate (September 2020) returns a B (score 84), comfortably above the UK average. When first surveyed in March 2010 the rating was C, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Poor to Very Good. Main heating runs on electricity. At 37 m² this is the 5th smallest of 34 units on EPC record in the building, where floor areas span 33–81 m². The building's EPC ratings span E to B, with this unit at the top.

Held since December 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Its energy rating outperforms most of the postcode (better than 82% of similar EPCs). On a £-per-square-foot basis, the last sale (£281/sq ft) was about 19.8% above the typical sold price in the postcode.