Mine Subsidence Districts are areas in NSW where there's a potential risk to buildings and structures from underground coal mining. These districts are declared by Subsidence Advisory NSW to help protect properties through regulation of development.
Before buying, building or developing a property in NSW, you should check whether it falls within a Mine Subsidence District. This information helps you determine if special approvals are required and whether the property is eligible for compensation in the event of damage caused by mine subsidence.
How to Check Mine Subsidence Districts in NSW
Landchecker displays mine subsidence areas in NSW. Read on below to learn how to toggle on this planning layer.
Search for your property using the address search bar at the top of the map
The Property Information Panel will open on the right-hand side
Scroll down to the Hazards section to see if the property is affected by mine subsidence
To visualise mine subsidence districts on the map:
Click Planning Layers in the left-hand side menu
Scroll to the Hazards section and tick the checkbox next to Mine Subsidence
Properties within designated districts will be highlighted on the map, showing you at a glance whether special approvals may be required
What You'll Find
When you check for mine subsidence districts on Landchecker, you'll see whether your property falls within a designated district where underground coal mining may affect surface developments.
Hazard Status
In the Planning Information section on the right-hand side panel, scroll to the Hazards section. Each hazard will show one of two statuses:
Affected – We have coverage for this area and the hazard zone intersects with the property. This means the property falls within the designated mine subsidence district.
Unaffected – We have coverage for this area but the hazard zone doesn't intersect with the property. The property is outside the designated mine subsidence district.
Source Authority, Type and Last Updated
Aside from the status, you'll find more details about the property by clicking the information button (i) next to the hazard status on the right-hand side info panel.
Source Authority – the authority responsible for mine subsidence management in the area, such as the NSW Department of Planning, Housing and Infrastructure
Type – whether the data comes from state government or local council
Last Updated – when the data was last refreshed
Download a Premium Property Report
Mine subsidence district information is included in your Premium Property Report alongside other hazards, planning controls and property details.
Click View Report from the Property Information Panel to generate your comprehensive property assessment.
Why the Mine Subsidence Data Matters
If a property falls within a Mine Subsidence District, you'll need approval from Subsidence Advisory NSW before:
Building or extending a home or structure
Subdividing land
Carrying out other significant development work
These approvals ensure structures are designed to reduce subsidence risk and remain eligible for compensation if damage occurs.
Properties with correct approvals are eligible for compensation if damaged by mine subsidence, whether inside or outside a declared district.
Need More Information?
Landchecker displays mine subsidence areas to help you conduct initial due diligence. For detailed information about specific properties, development requirements and approval processes, contact Subsidence Advisory NSW or consult with your local council.
Always verify mine subsidence information as part of your comprehensive property research, especially before purchasing, building or developing.