Prolonged rain can expose leaks, drainage problems and maintenance issues in shared building areas. Early checks and clear communication can help reduce water damage and make it easier to identify who needs to act.
How can prolonged rain affect a body corporate building?
Water leaking into a basement after heavy rain is a common concern for body corporates. Underground car parks, basements, lift pits and buildings partly cut into a hillside may all need attention after persistent wet weather.
Poor drainage can allow water to pool around foundations, retaining walls and other parts of the building. Directing water away from the building and reducing pooling can lower the risk of water ingress.
Water may also enter through:
- Cracks in walls, floors or other building elements
- Gaps around joints and openings
- Damaged or poorly maintained waterproofing
- Blocked or overflowing gutters and downpipes
- Areas where surface water is not draining away from the building
Leaks can have different causes. A visible patch of water inside a basement or lot may be connected to another part of the building, so sealing the visible area may not resolve the problem.
Which parts of a building may be affected by water ingress?
Prolonged rain can affect shared areas and individual lots. Common areas that may need checking include:
- Basement walls and floors
- Underground car parks
- Lift pits
- Roofs and roof drainage
- External walls
- Retaining walls
- Gutters, downpipes and stormwater paths
- Areas around windows, doors and other openings
Inside a lot, look for dampness, staining, bubbling paint, damaged flooring or a musty smell. These signs may not identify the source of the water, so record what you can see and report it to the body corporate or your body corporate manager.
A body corporate building insurance policy must cover damage to the insured building. The legislation’s definition of damage includes storm and water damage, but the terms of the policy still need to be checked for the particular situation.
You can find more practical information about maintenance in our body corporate maintenance factsheet.
Who is responsible for rainwater damage in a body corporate?
Responsibility depends on whether the affected area is common property, part of a lot or another building element. The registered survey plan shows the boundaries of the lots and common property, while the community management statement identifies the regulation module that applies to the scheme. These documents provide a starting point when responsibility is unclear.
Queensland body corporate legislation requires the body corporate to maintain common property in a good and structurally sound condition. A lot owner must maintain their lot in good condition. Maintenance can include work needed to prevent damage.
An owner may be responsible for maintenance within their lot, while the body corporate may be responsible for common property or structural elements affecting the building.
Responsibility can also depend on what caused the damage. An owner may be liable if failing to maintain their lot causes damage to another lot or common property. The body corporate may be liable if failing to maintain common property results in damage to a lot.
If the boundary is uncertain, the committee should obtain the relevant plan and seek qualified building or maintenance advice before approving repair work. Our body corporate maintenance factsheet provides further guidance.
What should you check after prolonged rain?
After a period of prolonged rain, owners and committees can complete a visual check of accessible areas. Do not enter unsafe areas or interfere with electrical equipment.
Check for:
- Water on basement floors or around lift pits
- Cracks, staining or damp patches on walls and floors
- Overflowing gutters or downpipes
- Water pooling near foundations or retaining walls
- Damage around windows, doors and external walls
- Leaks from roofs, pipes or other building services
- Changes in areas that have previously experienced water entry
Take photographs and note the date, location and apparent extent of the problem. Keep records of rainfall-related observations, reports from residents and any temporary steps taken.
Gutters and downpipes should direct rainwater away from foundations. Ground around a building should fall away from foundations where possible, helping water move away rather than collect against the building. Any proposed work to common property should be referred to the body corporate before it proceeds.
Inside a lot, owners should report water entry promptly rather than waiting to see whether it disappears. Temporary measures may limit further damage, but they do not establish the underlying cause.
When should you report a leak or arrange professional assessment?
Report a leak as soon as it is noticed, particularly when water is entering a shared area, spreading, returning after rain or affecting a structural building element.
A professional assessment may be appropriate where:
- The source of the water is not visible
- Water entry continues after rain stops
- A leak is close to electrical equipment
- Cracks or movement are visible
- Waterproofing appears damaged
- The same area leaks repeatedly
- Water is affecting a basement, lift pit or retaining wall
- Damage may involve both a lot and common property
The committee should keep owners informed and arrange suitable building, waterproofing or drainage advice where necessary. A qualified professional can help identify the likely source, assess the affected building elements and recommend appropriate work.
An immediate repair to the visible leak may not address the wider issue. The body corporate may need to consider maintenance responsibilities, access arrangements, insurance notification and the correct repair method.
Does body corporate insurance cover water damage?
A body corporate must generally hold insurance for common property, body corporate assets, public risk and, in most cases, every building containing a lot. The required insurance depends on whether the scheme is registered under a building format plan or a standard format plan.
For a building format plan, the body corporate must insure each building containing an owner’s lot for its full replacement value. In a standard format plan, the body corporate must insure buildings sharing a common wall, while an owner is responsible for insuring a free-standing building in the circumstances described by the legislation.
The required building insurance must cover damage to the building and other costs involved in reinstating or replacing insured buildings, such as professional fees and removing debris. A body corporate can also take out extra building insurance for matters such as floods, subject to the required decision-making process.
These requirements do not mean every water-related loss will automatically be covered. Check the body corporate’s policy, the affected property and the circumstances of the damage. Owners in flood-prone areas should ask their insurer whether the relevant property has flood cover.
At the annual general meeting, owners must receive information about the body corporate’s insurance policies and completed valuations.
For more information, see our body corporate insurance factsheet.
How can a body corporate reduce future water-ingress risks?
A body corporate can reduce risks by treating water entry as a maintenance issue and responding promptly after heavy rain. Useful steps include:
- Inspecting basement walls, floors and other shared areas regularly
- Keeping gutters, downpipes and drainage paths clear
- Checking whether water is pooling near foundations or retaining walls
- Confirming that water is directed away from the building
- Reviewing areas with a history of leaks
- Arranging qualified building or waterproofing advice where problems recur
- Recording inspections, reports, decisions and completed work
- Confirming responsibility before work starts
Queensland’s Get Ready guidance also recommends understanding the risks where you live, preparing an emergency plan and packing an emergency kit for extreme weather.
Prolonged rain can affect shared areas, individual lots and building insurance decisions, so early reporting and a clear maintenance process are important. If you need help understanding a maintenance or insurance issue, contact our team at reception@stratacare.com.au.


