Bushfire Mitigation

What is bushfire mitigation? 

Bushfire mitigation refers to the range of activities the City undertakes to reduce the likelihood of a bushfire starting or spreading near homes, infrastructure, and public spaces. The goal is straightforward: create safer conditions by managing the vegetation and fuels that allow fires to start and intensify. 

In practice, this means increasing the physical separation between built assets such as homes, community facilities, and roads and areas of unmanaged vegetation, while also reducing the volume of combustible material within and adjacent to those areas. 

What works are carried out? 

The City carries out a variety of treatment activities depending on the vegetation type, the risk level of the area, and any environmental considerations present. These activities may include: 

  • Mechanical mulching and slashing: Mulching woody vegetation and slashing grass reduces available fuel loads across treatment sites. 

  • Tree pruning: Pruning lower branches reduces the risk of ground fires climbing into the canopy, a process known as fire laddering. 

  • Firebreaks and access gates: Installing and maintaining firebreaks and locked access gates supports emergency vehicle access and limits fire spread. 

  • Chemical weed treatment: Targeted herbicide application controls invasive weeds that create dense, highly flammable fuel loads. 

  • Planned burns: Controlled burns are used where appropriate to manage fuel accumulation. Residents will receive advance notification before any planned burn is conducted. 

Verge maintenance

The City undertakes scheduled mowing and vegetation maintenance on rural, industrial and priority road verges to reduce fire hazards while maintaining safe sight lines for road users.

Maintenance frequencies vary depending on location, vegetation type and risk.

Environmental programs

The City supports private land conservation through the Landowner Biodiversity Conservation Grants Program.

These grants assist eligible landowners to conserve native vegetation while incorporating appropriate bushfire risk management into their properties.

Visit the grants page on our website for more information. 

What residents can do 

Asset Protection Zones

An Asset Protection Zone (APZ) is a low-fuel area immediately surrounding a building that is designed to reduce the impact of a bushfire. It provides a defendable space by limiting vegetation and other combustible materials close to a structure, helping to reduce radiant heat, direct flame contact and ember attack.

A well-maintained APZ can:

  • Reduce the intensity of an approaching bushfire.
  • Improve access and safety for firefighters.
  • Increase the likelihood that a building can be successfully defended.
  • Improve the chances of a building surviving a bushfire if left undefended.

To remain effective, an APZ should be maintained throughout the year by keeping grass short, removing dead vegetation and combustible debris, pruning vegetation where appropriate, and storing combustible materials away from buildings where practicable.

Read more in the Guidelines for planning in bushfire prone areas booklet.

Balancing bushfire safety and the environment

Creating an Asset Protection Zone does not mean removing all vegetation from your property. Trees and gardens can often be retained where they are appropriately located, well maintained and do not contribute to excessive fuel loads. The aim is to manage vegetation so that it is less likely to allow fire to spread rapidly or expose buildings to excessive radiant heat.

Property owners should also be aware that clearing native vegetation may require approval under State legislation or local planning requirements. Always check whether approvals are required before undertaking vegetation clearing

graphic showing a house with a clear boundary of minimal vegetation and obstructions

Contact

Address

City of Cockburn
Whadjuk Boodjar
9 Coleville Crescent,
Spearwood 6163

PO Box 1215, Bibra Lake DC,
Western Australia, 6965

Office opening hours:
8.30am to 4.30pm
Monday to Friday (excluding public holidays)

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Cockburn Nyungar moort Beeliar boodja-k kaadadjiny. Koora, yeyi, benang baalap nidja boodja-k kaaradjiny.
Ngalak kaditj boodjar kep wer kaadidjiny kalyakool yoodaniny, wer koora wer yeyi ngalak Birdiya koota-djinanginy.

The City of Cockburn acknowledges the Nyungar people of Beeliar Boodjar. Long ago, now and in the future they care for Country.
We acknowledge a continuing connection to Land, Waters and Culture and pay our respects to Elders, past and present.