11 Marine Gate Mansions, Promenade, Southport, PR9 0AU

11 Marine Gate Mansions is a two-bedroom mid-terrace house in Southport (PR9 0AU). It has a recorded floor area of 192 m² (around 2067 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (April 2025) returns a high B (score 86), putting the home a stone's throw from an A rating. When first surveyed in October 2008 the rating was C, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good. At 192 m² this is the 21st smallest of 31 units on EPC record in the building, where floor areas span 81–297 m². The building's EPC ratings span D to B, with this unit at the top. On EPC score it ranks first in the building (86 versus a worst of 55).

One historical planning record sits against the property in 2018. The record references listed-building consent, which constrain future alterations. At 192 m² it's 23.9% larger than the typical home in the postcode (155 m² median across 30 EPCs). Across 2004–2015, sale prices on this property compounded at -0.5% per year. Today's modelled estimate of £417,000 is 30.3% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£155/sq ft) was about 16% below the postcode norm. Last sold in August 2015, so it's been off the market for around 11 years.