What To Do After A House Flood: Step-By-Step Checklist

A flooded home hits you all at once, the standing water, the ruined belongings, the overwhelming question of what to do after a house flood. If you're reading this right now, you're probably dealing with exactly that. The good news is that the steps you take in the next few hours matter more than anything else in determining how much of your home and property can be saved.

At Water Damage Repair Tech, we've helped homeowners across Austin, Round Rock, Pflugerville, and surrounding areas recover from floods caused by burst pipes, heavy storms, and plumbing failures. Through that hands-on experience, we've seen what works, and what mistakes cost people thousands of dollars they didn't need to spend. Acting fast and acting smart are two different things, and you need both right now.

This guide walks you through a complete, step-by-step checklist covering everything from immediate safety priorities to documenting damage for your insurance claim, starting cleanup the right way, and knowing when to call in certified professionals. Follow it in order, and you'll be in the strongest possible position to protect your health, your home, and your finances as you move into recovery.

Before you start: safety, utilities, and protective gear

Before you do anything else, understand that a flooded home is not just a mess. It's an active hazard zone. Floodwater can be contaminated with sewage, bacteria, and chemicals. Electrical systems combined with standing water are a deadly combination. Rushing in without the right precautions is how people get hurt, or turn a manageable situation into a far worse one. Everything in the steps below assumes you've handled what's in this section first.

Know the risks before you step inside

Floodwater is rarely clean. Even if your flood came from a burst water supply line, the water quickly picks up contaminants from floors, walls, insulation, and any chemicals it contacts. If your situation involved sewage backup, storm surge, or groundwater intrusion, the contamination level is significantly higher and the health risk is real. Structural damage is another concern. Water weakens flooring, walls, and supports fast, and a floor that looks intact may not hold your weight.

If you see visible structural damage such as sagging ceilings, cracked walls, or buckled floors, do not enter until a professional has assessed the property.

Shut off utilities before you enter

Your first call should be to your utility company if you cannot safely reach your electrical panel from a dry area. Never step into standing water while the electricity is still on. Even a small amount of current running through water can be fatal. Turn off the main breaker at the panel only if you can reach it without contacting water. If you smell gas, leave the property immediately and call your gas company from outside before taking any other action.

Gear up before you touch anything

Once you've confirmed the utilities are off, you need to protect yourself physically before making contact with anything inside. Floodwater carries bacteria and other hazards that can be absorbed through cuts, mucous membranes, and prolonged skin contact. Use the gear list below as your minimum standard before entering.

Minimum protective gear for flood entry:

• Rubber boots, knee-high if possible

• Waterproof gloves, heavy-duty nitrile or rubber

• N95 respirator mask or higher-rated protection

• Safety goggles or glasses

• Long sleeves and pants in clothing you can wash or discard afterward

Avoid handling any contaminated materials with bare hands, and wash thoroughly with soap and water after any contact with floodwater or flood-damaged materials. This is a non-negotiable part of figuring out what to do after a house flood safely.

Step 1. Confirm it is safe to enter and shut off hazards

Before touching the door handle, run through a deliberate safety check first. Knowing what to do after a house flood starts with a systematic scan from the outside, working inward only when specific conditions are confirmed safe.

Inspect the exterior before entering

Walk the full perimeter and examine the foundation, walls, and roof from a distance before approaching the entry point. Look for visible cracks, leaning sections, or any part of the roof that has shifted or collapsed. Check for downed power lines near or touching the structure. If you spot any, keep at least 30 feet back and call your utility company before attempting entry.

If a power line contacts your home or yard, call 911 and your utility provider immediately and do not enter under any circumstances.

Shut off electricity and gas before you step inside

Once the exterior looks structurally sound, confirm your utilities are off. Locate your main electrical panel and flip the main breaker to OFF, but only if you can reach it without stepping through standing water. For gas, trust your nose: if you detect a sulfur or rotten-egg smell near the property, leave immediately and call your gas company from a safe distance. Do not use any electrical switches or outlets until a licensed electrician clears the system.

Run a final pre-entry check

Give yourself one final structured confirmation before stepping inside. Verify each item below:

• Main electrical breaker: OFF

• Gas supply valve: OFF

• No visible structural collapse on walls, ceiling, or floors

• No downed power lines within 30 feet

• Protective gear fully on (boots, gloves, respirator, goggles)

Never enter alone if water reached outlets or appliances. Having someone outside who can call for help is a basic but critical safety measure.

Step 2. Document damage and start insurance and assistance

Once you've confirmed the space is safe to enter, do not move or remove anything yet. Your next priority as part of knowing what to do after a house flood is creating a thorough record of every item and surface the water touched. Insurance adjusters need evidence, and the more detailed your documentation, the stronger your claim.

Photograph and video every damaged area

Walk through the entire affected space and record everything with your phone camera before disturbing a single item. Capture wide shots of each room showing the waterline on walls, then move to close-ups of individual damaged items, appliances, flooring, and structural materials. Label photos with the room name and timestamp if your camera does not do this automatically.

Take photos before you remove any water or wet materials, even if the delay feels costly. Removing evidence prematurely can reduce or invalidate your claim.

What to document before cleanup begins:

• Waterline marks on walls and door frames

• Damaged furniture, appliances, and personal belongings

• Flooring, baseboards, and subfloor where visible

• Exterior damage including windows, doors, and any foundation cracks

Contact your insurer and register for federal assistance

Call your homeowner's insurance company as soon as your documentation is complete. Report the loss, ask for your claim number, and confirm what your policy covers. Standard homeowner's insurance typically does not cover flooding from outside the home, so check whether you hold a separate flood insurance policy through the National Flood Insurance Program (NFIP).

If you live in a federally declared disaster area, register with FEMA's disaster assistance program for potential grants covering temporary housing and repair costs. Keep every receipt from emergency expenses, including hotel stays, meals, and emergency equipment rentals, as these may be reimbursable.

Step 3. Stop more damage and remove water and wet items

With documentation complete, your next priority in knowing what to do after a house flood is cutting off the water source and removing standing water as fast as possible. Every hour water sits in your home, it penetrates deeper into flooring, framing, and wall cavities, multiplying your repair costs significantly.

Stop the source and limit the spread

If your flood came from a burst pipe or appliance failure, confirm the main water supply is fully shut off before starting any removal. Walk the perimeter of affected rooms and place rolled towels or sandbags along doorway thresholds to keep water from spreading into dry areas while you work.

Check ceilings and walls for water still actively dripping or bulging, as this signals continued intrusion from above. Seal any visible gaps around windows or exterior doors with plastic sheeting and tape to block additional water until permanent repairs are made.

Remove standing water as fast as possible

Use a wet/dry vacuum or submersible pump to pull water out starting in the room with the highest volume, then work toward exits to avoid re-flooding areas you've already cleared.

Rent a submersible pump from a hardware store if water depth exceeds two inches. A standard wet/dry vac cannot move high volume quickly enough to matter.

Water Depth	Best Removal Tool
Under 1 inch	Wet/dry vacuum, mop and buckets
1 to 3 inches	Large-capacity wet/dry vacuum
Over 3 inches	Submersible pump

Pull out wet materials immediately

Remove soaked rugs, upholstered furniture, and cardboard boxes from the space right away, since these items trap moisture and accelerate mold growth. Move salvageable belongings to a dry, ventilated area outdoors or in an unaffected room.

Unsalvageable porous materials like wet carpet padding and saturated drywall sections should go directly to the curb. Leaving them in place even a few extra hours raises your mold risk considerably.

Step 4. Clean, disinfect, and dry fast to prevent mold

Mold can begin growing on wet surfaces in as little as 24 to 48 hours, which means cleaning and drying are not tasks you can push to tomorrow. Understanding what to do after a house flood in this phase is about speed and thoroughness, since both matter equally. Any surface the water touched needs disinfection before you seal the space back up.

Disinfect every surface the water contacted

Mix a solution of 1 cup of unscented liquid chlorine bleach per gallon of water and apply it to hard, non-porous surfaces including concrete floors, tile, and sealed wood trim. Scrub with a stiff brush, let the solution sit for at least 10 minutes, then wipe clean and allow to air dry. Avoid mixing bleach with any other cleaning product, since combining chemicals creates toxic fumes.

Never use bleach on porous materials like drywall or insulation. These materials absorb contamination deeply and must be removed and replaced, not cleaned in place.

Hard surfaces to disinfect after flooding:

• Concrete or tile floors

• Wood trim and door frames (sealed surfaces only)

• Countertops and cabinet exteriors

• Appliance exteriors and utility fixtures

Dry the space completely before closing it up

Set up high-volume fans and a dehumidifier in each affected room immediately after disinfecting. Angle fans low toward wet walls and floors to push moisture-laden air out of the space as fast as possible. Open windows when outdoor humidity is lower than indoor levels to accelerate airflow and drying.

Track moisture levels in walls and floors using a moisture meter each day until readings reach baseline. Sealing up a room that still holds trapped moisture is the most common reason homes develop serious mold problems in the weeks following a flood.

Next steps after cleanup

Completing cleanup is not the finish line. Once your space is dry and disinfected, schedule a professional moisture inspection to confirm no hidden water remains trapped inside walls or under subflooring. Skipping this step is the most common reason homeowners deal with a mold problem weeks later. You also need to keep all your receipts, photos, and written records organized in one place as you move toward repairs, since your insurance adjuster will request this documentation before approving any payout.

Knowing what to do after a house flood means recognizing when the situation goes beyond DIY capacity. If your flood involved sewage contamination, significant structural damage, or water that sat for more than 24 hours, professional restoration is the right call, not an optional one. The Austin water damage restoration experts at Water Damage Repair Tech offer 24/7 emergency response and free estimates, so you can get certified help fast without guessing at the cost.