If a property is located in an area where coal mining has occurred, it may be affected by mine subsidence.
Mine Subsidence Districts are declared in areas where there are potential subsidence risks from active or non-active underground coal mining.
A district is a land zoning tool administered by Subsidence Advisory NSW under the Coal Mine Subsidence Compensation Act 2017 to help protect homes and other structures from potential mine subsidence damage.
If you plan to build or subdivide within a district, you must obtain approval from Subsidence Advisory NSW before starting work.
Search online
To find out if a property is in a Mine Subsidence District, and which development guidelines are assigned to the property, you can use the NSW Planning Portal Spatial Viewer.
You can also check online maps, however, these show only the general boundaries of a Mine Subsidence District, not individual property details.
Contact
If you need help using the portal or are unable to claim online, call Subsidence Advisory NSW on (02) 4908 4300 between 8:30am to 4:30pm, Monday to Friday.
For emergencies:
- If you have a subsidence emergency at your property or you’ve found a subsidence hole, report it to the Subsidence Advisory NSW 24-hour hotline on 1800 248 083.
- If there is an immediate threat to life or property, call Triple Zero (000).