Party Wall Surveying for Basement Conversions: Navigating Deeper Excavations in Stabilising Southern Markets

Basement conversions add between 15 and 25 percent to the value of a southern London property — yet fewer than one in three homeowners fully understand the legal and structural obligations triggered before a single spade enters the ground [2]. In 2026, as the property market across Surrey, Sussex, and the inner southern boroughs settles […]