Sewer dilapidation report

A sewer dilapidation report is a structured CCTV survey report assessing the condition of private drains and sewers, commonly commissioned during property purchase or commercial lease negotiation. The report typically follows the WRc Manual of Sewer Condition Classification, identifying defects such as cracks, displaced joints, root ingress, fat deposits and infiltration, and giving recommendations for repair or rehabilitation. In Greater London, dilapidation reports are particularly relevant on Victorian and Edwardian housing stock where vitrified clay drains may have suffered decades of ground movement. Practical implications for homebuyers include the ability to negotiate price adjustments, raise warranty claims or plan future expenditure based on documented evidence. Reports are typically commissioned through a specialist drainage contractor or chartered building surveyor familiar with BS EN 13508 inspection coding and the WRc manuals.