Flood mitigation matters for Queensland apartment communities facing flood risk and possible property damage. Flooding can damage buildings, infrastructure and personal property, while disrupting residents’ lives and building services.
A practical flood plan should cover the building’s location, common property, drainage, basement areas, resident communication, insurance and specialist advice. The right approach depends on the site and how floodwater could affect the property.
How can a Queensland body corporate reduce flood risk?
Start by identifying how water could enter or affect the property. Buildings near waterways or in low-lying areas may face greater flood exposure. Check the risk against current council flood mapping and site information.
The body corporate can:
- review available flood mapping and previous property information
- inspect drainage, gutters, downpipes and stormwater systems
- check whether basement areas, entry points or plant rooms could be affected
- identify critical services that could be damaged or interrupted
- keep records of maintenance issues, inspections and recommended works
- discuss practical options with owners and qualified professionals.
Queensland’s Get Ready guidance recommends understanding your risk, preparing an emergency plan and packing an emergency kit. A body corporate can take the same approach with the building by documenting likely risks and agreeing what should happen before, during and after a flood.
Flood mitigation can involve several measures. Drainage improvements, maintenance, barriers, equipment protection, resident communication and emergency planning may work together as part of a documented risk assessment.
The body corporate should also confirm which parts of the property are common property and which are within individual lots. The registered survey plan and community management statement can help identify the plan of subdivision and regulation module applying to the scheme.
What flood risks should an apartment building assess?
Flood risk can vary between buildings, even within the same suburb. A risk review should consider water entering the site from outside and water moving through the building.
Areas to assess may include:
- basement car parks and storage areas
- vehicle entrances, ramps and pedestrian access points
- ground-floor doors, windows and ventilation openings
- stormwater drains, pits, grates, gutters and downpipes
- electrical rooms, switchboards, pumps and other critical equipment
- lifts and lift pits
- plant rooms and building services
- waste areas and other low points
- common property walls, floors and finishes
- access routes and possible assembly areas.
Basement flooding can isolate residents, damage property and interrupt building services. A building should not assume that a basement will be protected simply because it is below ground. Consider where water may collect, how it could enter and which services may be affected first.
Coastal properties may face storm-surge, tidal and rainfall-related flood risks. Consider these risks alongside local flood mapping and a site assessment rather than treating them as the same for every coastal building.
The body corporate also needs to understand its maintenance responsibilities. A body corporate must maintain common property in a good and structurally sound condition. A lot owner must maintain their lot in good condition, and maintenance can include work needed to prevent damage.
This distinction matters when reviewing flood protection. A blocked common-property drain may be a body corporate issue, while items kept inside a lot may be the owner’s responsibility. An owner may be liable if failure to maintain their lot causes damage to another lot or common property. A body corporate may also be liable if failure to maintain common property results in damage to a lot.
Which flood mitigation measures are practical for common property?
The body corporate can start with regular maintenance and clear records of what has been inspected. Clearing debris and blockages can help drainage systems function properly, particularly around gutters, downpipes, stormwater drains and grates.
Before committing to structural work, ask a qualified professional to assess the proposed solution. Flood barriers, sandbags, pumps, drainage changes and changes to building services may not suit every site. Poorly designed works could redirect water, obstruct access or create other risks.
Possible measures include:
- improving or maintaining drainage and stormwater systems
- clearing debris from gutters, downpipes, drains and pits
- using temporary flood barriers or sandbags where appropriate
- protecting entry points and other likely water paths
- using flood-resilient or water-resistant materials in suitable areas
- locating electrical equipment or other critical equipment above expected flood levels
- protecting pumps, generators and essential building services
- improving signage, lighting and access arrangements
- documenting inspection and response procedures.
Electrical relocation and other changes to essential services require qualified engineering and electrical advice. The body corporate should not treat a general suggestion as a design for its particular building.
A body corporate should also separate maintenance from improvements. Queensland Government guidance explains that maintaining common property is different from making an improvement. This distinction can affect the decision-making process, funding and the information owners need before a proposal is considered.
Flood mitigation works may involve upfront costs. When preparing a budget, compare those costs with possible future costs for repairs, damaged common property, service interruptions and disruption. This is a budgeting consideration, not a guarantee that a particular measure will prevent damage or reduce insurance costs.
For broader storm preparation, see storm season preparedness for Queensland body corporates.
How should a body corporate prepare residents for flooding?
Residents should receive clear information about the building’s flood risks and emergency procedures. The information should be easy to find and explain what residents are expected to do before and during a flood.
A building plan may include:
- likely flood entry points and areas to avoid
- evacuation routes and assembly areas
- lift restrictions and alternative access arrangements
- who residents should contact during an incident
- how building services may be affected
- arrangements for residents who need assistance
- instructions for protecting personal belongings
- where emergency equipment and information are kept.
The plan should be reviewed with the committee, body corporate manager, caretaker and relevant contractors. Residents should be told about any changes, especially if access routes, parking areas, lifts or common facilities are affected.
Lot owners should prepare their own household emergency plans and emergency kits. Queensland’s Get Ready guidance recommends keeping household information in one place and preparing items that may be needed during an extreme weather event.
Residents should also consider their contents, furniture and other belongings. Items that can be moved should be stored above expected flood levels where practical. Owners should check their own contents insurance and avoid assuming that the body corporate’s building policy covers personal belongings.
A body corporate can use meetings, notices, digital communications and induction information to make the procedure accessible. The aim is to give residents enough information to act without creating confusion during an emergency.
What should a body corporate check about insurance and flood damage?
The body corporate should read its current policy and speak with the insurer or broker about how flood and water damage are treated. Coverage depends on the policy wording, exclusions, limits, excesses and the circumstances of the event. Do not assume that a building policy covers every item inside a lot or every type of water damage.
A body corporate must have insurance for common property, body corporate assets, public risk and, in most cases, every building that contains a lot. The required insurance depends on the scheme’s survey plan.
For a building format plan, the body corporate must generally insure each building containing an owner’s lot for its full replacement value. For a standard format plan, the responsibilities may differ, including where a building is free-standing.
Building insurance must cover damage to the building and other costs required to reinstate or replace insured buildings, such as professional fees and debris removal. The body corporate can take out extra building insurance for things such as floods, with a motion to do so passed by ordinary resolution at a general meeting.
Flood cover is not automatically available, and a claim will not necessarily be accepted. Ask the insurer for the current position in writing, including:
- whether flood damage is covered
- how storm and water damage are treated
- relevant exclusions and limits
- the applicable excess
- whether basement damage or building services have specific conditions
- what information is needed if a claim is made
- whether mitigation works need approval or notification.
The body corporate must have insured buildings valued for their full replacement cost, with an independent valuation at least every 5 years. Owners must also receive information about the body corporate’s insurance policies and valuations at the annual general meeting, including the valuation date and full replacement value.
The excess is the amount paid towards an insurance claim. If damage affects only one lot, the owner should generally pay the excess unless the body corporate decides that would be unreasonable. If damage affects 2 or more lots, or lots and common property, the body corporate should generally pay unless it decides it is reasonable for one or more affected lots to contribute.
You can also read our flood insurance guide and body corporate insurance factsheet.
What can owners do if the body corporate does not act?
Owners who believe flood mitigation needs attention can raise the issue through the body corporate’s meeting and communication processes. Bring practical information, such as photographs, maintenance records, flood mapping, reports, quotations and details of previous water entry.
A useful proposal should explain:
- the risk being addressed
- whether the area is common property or part of a lot
- the recommended measure
- whether professional advice is needed
- the likely cost and funding source
- any ongoing maintenance requirements
- what may happen if no action is taken
- whether a staged approach is possible.
Owners can speak with other owners, request that the issue be included for discussion and ask the committee or body corporate manager what information is required for a decision. A documented engineering or flood assessment may help the body corporate understand the problem and compare options.
Owners should avoid making changes to common property without the required approval. Personal measures may include checking contents insurance, moving belongings above expected flood levels and preparing a household emergency plan. These steps protect the owner’s position but do not replace body corporate action on common property.
If mitigation is ineffective or the site remains highly exposed, owners may need to consider larger personal decisions, including whether to sell and move to a less flood-prone property. Relocation and retreat are major owner-level decisions, not simple body corporate maintenance measures.
The best response will depend on the property, the flood mechanism and the available evidence. Owners should obtain appropriate professional advice before relying on a particular legal, engineering or insurance solution.
When should a body corporate engage an engineer or flood specialist?
A body corporate should consider specialist advice when the proposed solution involves structural work, drainage design, basement protection, electrical equipment, flood barriers, pumps or changes to essential building services.
An engineer or flood specialist can help assess:
- how water is likely to reach the property
- whether the proposed measure addresses the actual flood mechanism
- the effect on neighbouring lots and common property
- structural and access implications
- the level at which equipment should be protected
- whether temporary or permanent barriers are suitable
- the likely maintenance requirements
- how different measures could work together.
Professional advice is particularly useful where the body corporate is comparing several options or considering substantial expenditure. A documented assessment can support a clear motion, budget and maintenance plan.
A flood-prone property may need a combination of measures. The body corporate should keep the assessment, recommendations, approvals and completed works together so future committees can understand what was considered and why.
Flood mitigation works best when a body corporate understands its site, maintains common property, prepares residents, checks its insurance and obtains suitable advice before undertaking specialist works. If you need help coordinating the next steps for your scheme, contact StrataCare at reception@stratacare.com.au.
