After a condo flood, protect people first, then stop the water, make the electrical hazard safe, photograph everything and call your property manager, insurer and a restoration crew. The first hour matters because water spreads to units above, below and beside you, and wet materials start to deteriorate quickly.
Key takeaways
- If anyone is in danger, there is smoke, or water is near live electrical equipment, call 911 before anything else.
- Stop the source if you can do it safely: your unit's shut-off valve first, then the property manager or security for building shut-offs.
- Photograph and video the damage before moving anything. It protects your insurance claim.
- Call your property manager and your insurer, then a restoration company that can start drying the same day.
What should you do in the first minutes?
Work through these steps in order. Stop and call for help if any step feels unsafe.
Make sure everyone is safe
Get people and pets away from standing water. Do not walk through water if there is any chance outlets, appliances or wiring are wet. Call 911 if there is smoke, a smell of burning, a gas smell, or anyone is hurt.Stop the source of the water
If the water comes from a pipe, appliance or fixture in your unit, close the nearest shut-off valve. Many suites also have a main shut-off for the unit. If the water is coming from another unit, the ceiling or a riser, call the property manager or building security right away so they can shut off building water or isolate the line.Make the electrical hazard safe
If you can reach the panel without stepping in water, switch off the breakers for the affected area. Do not touch wet outlets, cords or appliances. If the panel is in or near the water, do not approach it: call 911 and the property manager.Photograph and video everything
Before you move or discard anything, record the water, the ceiling, walls, floors, furniture and the source. Add a few wide shots with a date visible. This record helps your insurer and the corporation.Call the property manager
They can alert neighbours, shut off building systems and tell you the building's contractor rules, including elevator booking and approved vendors.Call your insurer
Report the loss, ask what they require and ask whether they have preferred vendors. Do not sign anything that commits you to repairs before you understand the coverage.Call a restoration company
Water damage restoration should start as soon as possible. See emergency condo restoration or our water damage restoration service.
What should you avoid doing?
- Do not use a household vacuum on water. It is an electrical and shock risk and will not dry the building materials.
- Do not turn on ceiling lights or fans under a wet ceiling. Water can pool in fixtures.
- Do not throw away damaged items yet. Photograph them first, and keep samples or labels if an adjuster may want them.
- Do not start tearing out drywall or flooring unless a restoration professional advises it. The way materials are removed affects drying and, in the case of older buildings, may disturb hazardous materials.
- Do not assume the water is clean. See the water categories below.
Is the water clean? The three water categories
Restoration professionals classify water by contamination, following the IICRC S500 standard for professional water damage restoration. The category decides what can be dried and what must be removed.
| Category | Typical source | What it means |
|---|---|---|
| Category 1 | Supply line, tap, tank overflow | Clean at the source. Can become worse if left, as it picks up contamination over time. |
| Category 2 | Washing machine or dishwasher discharge, toilet overflow with urine only | Contaminated. Porous materials are often removed. |
| Category 3 | Sewage, rising floodwater, long-standing water | Grossly contaminated. Needs protective equipment, removal of porous materials and disinfection. |
If the water came from a drain or toilet backup, treat it as contaminated and keep children and pets out. See sewage backup cleanup.
Why does the first hour matter so much?
Water does not stay put. In a high-rise, it moves along slabs, through floor openings and down risers, often reaching suites you have never seen. Wet drywall, insulation and underlay can lose strength, and sustained moisture can lead to mold within a day or two. Health Canada's guidance on moisture and mould stresses controlling dampness quickly. The sooner a crew extracts water and starts drying, the more of the structure can be saved. If mold has already started, read our guide to mold in a condo.
Who else needs to know?
- Neighbours below and beside you: the property manager can alert them. Water in their unit changes who is responsible and who must be on site.
- The condominium corporation: the corporation may need to report to its own insurer, especially if common elements are damaged.
- Your landlord or tenants: if you rent out your unit, tell your tenant and your insurer.
How the cost is split depends on where the water came from and what is damaged. Our guide on condo water damage and insurance in Ontario explains who typically pays for what. We also help with the paperwork through insurance claims support.
What happens when the restoration crew arrives?
A professional crew starts by checking safety and mapping where water has gone with moisture meters and thermal imaging. Then they extract standing water, remove materials that cannot be dried, set up air movers and dehumidifiers, and monitor moisture readings daily until the structure is dry. They document each step with photos and readings so the insurer and the corporation can follow the work. In a condo, they also coordinate access, elevator bookings and protection of corridors with the property manager. If you are in Toronto or the GTA and need a crew, call CondoWorks on (289) 803-2815; the line is answered 24/7. Anyone in danger should call 911 first.
After a condo flood: common questions
Sources and further reading
- Health Canada: Guide to addressing moisture and mould indoors
- Insurance Bureau of Canada: water damage guidance for consumers
- IICRC: ANSI/IICRC S500 Standard for Professional Water Damage Restoration