Do not enter an unsafe basement
If water may have reached electrical outlets, a furnace, water heater or electrical panel, do not enter the water or touch equipment. Contact the relevant utility or emergency service for guidance. Avoid entering a basement where structural damage or contaminated water may be present.
Record what you can safely see
From a safe location, note where water entered, the approximate waterline, affected rooms and visible damage. Photos can help with later discussions or an insurance claim, but do not put yourself at risk to take them.
Ask about the source as well as cleanup
Ask the provider whether its proposed work includes only water removal and drying or also diagnosis and repair of the entry point. Waterproofing, drainage work, plumbing repairs and reconstruction may require different specialists.
Plan for moisture follow-up
A basement may contain hidden damp materials even when the floor looks dry. Ask how moisture will be assessed and how the provider will explain when its drying work is complete.