Cumbrian House, Flat 1, 3 Arthur Road, Southampton, SO15 5DZ

Cumbrian House is a one-bedroom semi-detached house in Southampton (SO15 5DZ). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 2003-2006 and council tax band B. At 45 m² this is the smallest unit on EPC record across Cumbrian House (45–101 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (July 2020) shows a C (score 69), just inside the C band. When first surveyed in October 2008 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Good to Very Good. Main heating runs on electricity.

Most recent transfer was May 2025 at £149,000 — fresh data. Across the public record there are 4 sales, relatively high churn for a single property. At 45 m² it sits well below the postcode median (77 m² across 9 EPCs), making it one of the more compact homes locally. Across 2004–2025, sale prices on this property compounded at 1.3% per year. On a £-per-square-foot basis, the last sale (£308/sq ft) was about 67.1% above the typical sold price in the postcode.