Flood yard clean up: a safety-first guide to your yard, garage and under the house

When floodwater goes down, the yard, garage and space under the house are often the first places you want to sort out. It’s natural to want to start straight away. A steady, safety-first approach protects you and your family, and makes the rest of your recovery easier to manage.

This guide covers the outdoor and ground-level parts of a flood clean-up in Queensland, based on advice from the Queensland Government, Queensland Health and electricity distributors. If water has also come inside your home, our flood clean-up service page explains how the building itself is assessed, cleaned and dried.

Before you start: is it safe to go outside?

The Queensland Government advises waiting until hazards have been cleared and local officials have declared the area safe. Once you have the all-clear, walk around slowly and look before you touch anything.

Electrical hazards

Water-damaged wiring and appliances can stay dangerous even after they dry.

• If your property has flooded and the mains power is still connected, contact your electricity distributor (Energex in South East Queensland, Ergon Energy in regional Queensland) to arrange disconnection.
• Don’t touch switchboards, power points, pool pumps, garage door motors or appliances that are wet or have been underwater.
• Don’t try to switch off a solar power system if any of its parts are wet.
• Stay well away from fallen or low powerlines and report them to your distributor or emergency services.
• Have a licensed electrician check wiring, fittings and water-affected appliances before the power goes back on. Electrical work is for licensed electricians only.

Structural and ground hazards

Queensland Health notes that floods can affect the structural integrity of buildings. From a safe distance, look for:

• cracked, leaning or undermined retaining walls, fences, stairs and decks
• washed-out or sunken ground, paths and driveways
• stumps or posts under a raised home that look out of position
• trees that are leaning or have loosened roots.

If anything looks unstable, keep people and pets away and have it checked by a licensed builder or structural engineer. For help with non-life-threatening storm or flood damage, you can call the SES on 132 500. For immediate danger, call 000.

Gas, generators and wildlife

• If the property is damaged, check that gas supplies have been turned off, if it is safe to do so.
• Only run generators and petrol pumps outside in a well-ventilated area. Queensland Health warns of carbon monoxide poisoning when they are used in confined spaces.
• Snakes and spiders often shelter in debris after a flood. Wear gloves and sturdy boots, and use a rake rather than your hands to move piles.

Treat floodwater and mud as contaminated

Floodwater is often contaminated by sewage from overflowing sewerage or septic systems, and by agricultural or industrial waste and chemicals. Queensland Health advises assuming that anything that has been in contact with floodwater is contaminated. Contact can cause skin and wound infections, gastro illness and conjunctivitis.

To protect yourself while you work:

• Wear long sleeves, long pants, heavy-duty gloves, sturdy enclosed footwear or rubber boots, and eye protection. Wear a P2 mask where needed.
• Cover cuts and grazes with waterproof dressings. If you get a wound, ask your doctor about tetanus. See a doctor if a wound becomes red or sore, or if you develop a fever.
• Wash your hands with soap and clean water after clean-up work and before eating.
• Keep children and pets away from work areas.
• Wear sunscreen and a hat, and drink plenty of water.

Flood yard clean up: working through the outdoor areas

Once the property is safe and you’re properly protected, you can start on the yard if it is safe to do so. Pace yourself and take breaks.

Photograph everything first

Before you move or throw anything out, photograph the yard, garage, under-house area, fences and damaged items, including any visible water line. These records help you, your insurer and your trades. If you plan to make a claim, check with your insurer before you dispose of damaged items.

Reztor provides restoration and supporting documentation. Your insurer determines policy coverage and claim outcomes.

Debris, green waste and rubbish

• If it is safe to do so, rake up and gather debris. It can hide broken glass, nails, sharp metal and wildlife.
• Contact your local council about changes to waste collection and for disposal advice.
• Put food and other organic waste in sealed bags for collection.
• Don’t leave hazardous waste on the kerbside. That includes chemicals, medicines, gas bottles and asbestos.
• Leave large fallen trees, and anything near powerlines, to qualified contractors. The SES may help with fallen trees that are endangering people or property.

Lawns, garden beds and paved areas

• Queensland Government advice is to leave grassed and bare-dirt areas to dry out naturally.
• Paved areas, paths and driveways that were contaminated should be washed well. Do this only if it is safe to do so, and wear protective clothing.
• Don’t use a high-pressure cleaner on fibro fences, eaves or older sheeting. Homes built before 1990 may contain asbestos, and cleaning asbestos-containing material with high-pressure water is prohibited in Queensland homes.
• Produce from vegetable and herb gardens may have been contaminated. NSW Health advises that some produce may be salvaged if it is disinfected, peeled and cooked. If you’re unsure, don’t eat it.
• To reduce mosquito breeding, if it is safe to do so, empty pot-plant saucers and containers, remove waterlogged rubbish and help the yard drain.

Pools, spas and rainwater tanks

Flood-affected pools and spas are likely to contain harmful germs and can breed mosquitoes. The Queensland Government recommends asking your council about disposing of the water, and your pool shop about when you can pump out without damaging the pool, and how to clean and refill it.

Flood-affected rainwater and bore tanks are not suitable for normal use. Don’t empty an underground tank while the ground is still wet. Ask your tank supplier or a professional tank cleaner for help, as working inside a tank is hazardous confined-space work. Have an electrician check pool and tank pumps before use.

Septic systems

If a septic tank or aerated wastewater system has been flooded, stop using it and contact a licensed plumber or wastewater service technician. Septic systems can contain dangerous gases and harmful material, so pumping out and repairs are specialist jobs.

Cleaning up a flooded garage

A flooded garage needs extra care because it usually holds electrical equipment, chemicals and stored belongings.

• Power and equipment: don’t operate garage door motors, freezers, power tools or power points that got wet. A licensed electrician should check them first.
• Chemicals and fuels: garden chemicals, pool chemicals, paint and fuel containers may have leaked or been damaged. If it is safe to do so, keep them upright and separate, and ask your council about hazardous waste disposal.
• Stored belongings: cardboard, fabrics, mattresses and particleboard soak up contaminated water and are often hard to clean safely. Some items may be cleaned professionally; assessment confirms what can be restored. Learn more about textile and contents cleaning.
• Floors and walls: concrete slabs and block walls can hold moisture after the surface looks dry. In lined or converted garages, inundated linings and insulation usually need replacing. See how concrete drying works.

Under the house

Many Queensland homes are raised, with storage, a laundry or built-in rooms underneath. These spaces are often low and dark, which makes them harder to clean safely.

• Open under-house areas: mud and silt left behind are contaminated. If it is safe to do so, wear full protective gear, work in good light, and watch for wildlife and damaged stumps.
• Enclosed or built-in rooms: treat these like the inside of your home. Wet plasterboard, insulation, flooring and timber may need professional assessment and structural drying.
• Sewage: if the water came from an overflowing sewer or septic system, or you can see or smell sewage, don’t clean it up yourself. This is Category 3 water. Our guide to water categories explains why it needs controlled handling, and our sewage clean-up team can help.
• Mould: damp, closed-in areas can develop mould after a flood. Queensland Health advises against dry-brushing mould, as this can spread spores. Read more about mould remediation.

When to call a professional

You can manage some of the outdoor clean-up yourself. It is safer to bring in the right professional when:

• sewage or septic waste has reached the yard, garage or under-house area
• water has entered living areas or enclosed rooms under the house
• plasterboard, insulation, carpet or timber floors are wet
• mould is growing
• materials may contain asbestos. Use a licensed asbestos removalist and see asbestos.qld.gov.au
• you’re unsure whether a structure is sound. Ask a licensed builder or structural engineer.

Reztor’s in-house technicians (no subcontractors) assess flood-affected materials, extract water and plan the cleaning and drying. We keep records such as photographs, moisture readings and affected-material notes. Our guide to working with your insurer explains how these records fit in.

If floodwater has reached your garage, the rooms under your house or the home itself, you don’t have to work through it alone. Once you’re somewhere safe, call our team 24/7 on 1800 739 867, or send details and photos. Tell us your suburb and which areas are affected, and we’ll talk you through a clear next step.

Flood yard clean up FAQs

Can I hose mud off my yard after a flood?

Queensland Government advice is to let grassed and bare-dirt areas dry out naturally. Hard surfaces such as paving and driveways can be washed if it is safe to do so, while you wear protective clothing. Avoid high-pressure cleaning near materials that may contain asbestos. If the mud may contain sewage, call a professional.

Who should clean up a flooded garage?

You can often clear light debris yourself if it is safe to do so. Call a restoration professional if sewage was involved, linings or insulation are wet, or the garage is living space. A licensed electrician should check electrical equipment.

Will insurance cover my flood clean-up?

That depends on your policy. Reztor provides restoration and supporting documentation. Your insurer determines policy coverage and claim outcomes. Talk to your insurer early, and photograph the damage before you clean up.

When can the power go back on?

Only once a licensed electrician has checked any wiring, switchboards and appliances that were affected by water. If your distributor has disconnected your supply, your electrician can explain the reconnection steps.