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What Should I Do First After a House Flood?

Last updated October 26, 2026

The short answer

Safety First

Your safety is the top priority after a flood. Turn off the main power breaker and gas supply if you can do so without walking through standing water. If water is near electrical outlets or appliances, do not touch anything and call an electrician.

Wear rubber boots and gloves to avoid contact with floodwater, which may contain harmful bacteria or chemicals. If you feel unwell, see a doctor. Keep children and pets away from the affected area until it is safer.

Stop the Water

Find and shut off the main water valve for your home to stop the flow. If the flood comes from a broken pipe, turn that valve first. If it comes from heavy rain or a overflowing appliance, move items away from the water and block doorways with towels or sandbags.

Knowing where your shutoff valve is located can save valuable time. Keep that location written down and easy to find. If you cannot locate the valve, ask a plumber or the pros for help.

  • Locate your main water shutoff valve now
  • Turn off electricity before entering wet areas
  • Turn off gas if you smell gas or hear hissing
  • Move furniture and rugs to a dry space
  • Remove books, photos, and papers to high shelves
  • Open windows and doors for ventilation

Remove Belongings

Save items that are easy to carry and valuable, such as electronics, documents, and sentimental objects. Put them in plastic bins or on high ground to keep them out of water. Do not try to move heavy furniture alone; ask for help.

Do not throw away items yet. Even soaked furniture and carpets might be dried or repaired by the pros. Take photos of everything first, then move what you can. This keeps your home safer and preserves evidence for your insurance claim.

Document the Damage

Take clear photos and videos of all affected areas before you start cleaning or drying. Include close-ups of water lines on walls, soaked floors, and any damaged belongings. This documentation helps your insurance company understand what happened.

Write a list of damaged items with their approximate age and value. Keep receipts and notes in a dry place. Do not throw anything away until you check with your insurance company. Policies vary, and your insurer decides what is covered.

Start Drying and Call Pros

Once it is safe, begin drying your home. Use fans, dehumidifiers, and mops to remove standing water. Remove wet carpets and padding if they are heavy and can be lifted. The longer water stays, the more damage it can cause.

Call local water damage pros as soon as you have stopped the water and documented the scene. They have the right equipment for thorough drying and can handle tasks like water damage inspection. Acting quickly helps reduce mold and structural issues.

  • Use a wet-dry vacuum to remove standing water
  • Set up fans to circulate air in affected rooms
  • Remove baseboards and furniture legs if possible
  • Check hidden areas like closets and under sinks
  • Do not use regular household vacuums on water
  • Avoid increasing your risk of electrocution

Talk to someone now

Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.

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Frequently asked questions

How long can water sit before mold starts?

Mold can begin growing within 24 to 48 hours in damp conditions. Start drying as soon as you safely can. If you see or smell mold, do not disturb it. Call a mold professional for an assessment.

Should I turn off the water if it is an outside flood?

If the flood comes from rain or groundwater, turning off your indoor water supply may not help. Focus on moving valuables and keeping water out with barriers. For pipe bursts, shut the valve to stop the leak.

Can I clean up a flood myself?

Small spills and minor flooding can be handled with mops and fans. Large floods or water that sits for more than a day are right to leave to the pros. They have industrial equipment and expertise to dry walls and structures properly.

Call Now (510) 318-3798