Start with the problem you want solved
Describe the visible evidence: dripping, a damp surface, water-meter concern or staining that appears after a fixture is used.
Alpine: planning the visit
For a detached space or an added bathroom, explain the existing water and wastewater connections. Ask the plumber which records or site inspection are needed before estimating concealed work. Avoid assuming that a nearby fixture establishes a suitable connection for every proposed use.
