Marine Gate Mansions, 40 The Apartments, Promenade, Southport, PR9 0EF

Marine Gate Mansions is a two-bedroom semi-detached house in Southport (PR9 0EF). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 2003-2006 and council tax band E. The latest certificate (August 2019) shows a C (score 75), near the top of the C band. Earlier certificates rated it B (July 2009); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while window efficiency dropped from Good to Average. At 82 m² this is the 12th smallest of 60 units on EPC record in Marine Gate Mansions, where floor areas span 41–180 m². The building's EPC ratings span E to B across 60 units on file.

Held since July 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 82 m² it's 20.4% smaller than the typical home in the postcode (103 m² median across 59 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 73% of similar EPCs).