The difference
What each option actually means
Testing and detection may help narrow a concealed leak before invasive work, but sometimes access is still needed.
The trade-offs
The value of testing depends on building materials, leak behaviour and the equipment appropriate to the fault.
How to decide
Ask about likely accuracy, access and making-good responsibilities.
Before choosing
A plumber should assess suitability, condition, access and applicable requirements. Product or repair recommendations made without seeing the property are preliminary. Ask for the proposed scope, exclusions and relevant warranty details before approving the work.
Little Bay Plumbing can discuss the choices with you and help plan the next step for a Sydney property, subject to booking availability.