Compare dry and wet periods
A patch that persists through dry conditions deserves attention, but does not automatically establish a pipe failure.
Map the known supplies
External taps, outbuildings and irrigation branches can change the suspect route. Mention any known buried services.
Plan excavation carefully
Access permissions and the surfaces above the route matter. Garden restoration is separate from necessary access and plumbing repair.
Explore the relevant service
General information for planning an investigation. The property, instruction and findings determine the appropriate work.