Flat 4, 48 Promenade, Southport, PR9 0DX

Flat 4 is a mid-terrace house in Southport (PR9 0DX). It has a recorded floor area of 40 m² (around 431 sq ft) and construction records dating it to before 1900. At 40 m² this is the smallest unit on EPC record across the building (40–63 m²). The building's EPC ratings span E to B across 5 units on file. The latest certificate (November 2017) shows a D (score 56), a step below the typical UK home. The rating has held steady at D across 2 certificates since July 2009. Between certificates, wall efficiency went from Very Poor to Poor. The recommended improvements would push it to C (score 72).

Sold February 2021 for £73,000. Across the public record there are 5 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1998–2021, sale prices on this property compounded at 5.2% per year. Today's modelled estimate of £106,000 is 45.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£170/sq ft) was about 35.3% above the typical sold price in the postcode. At 40 m² it's 18.4% smaller than the typical home in the postcode (49 m² median across 31 EPCs).