What is a Mine Subsidence Report?
A Mine Subsidence Report is an official assessment from Subsidence Advisory NSW confirming whether your property lies within a Mine Subsidence District. If it does, the report outlines whether any design, approval, or construction controls apply due to the risk of ground movement caused by historical or active mining activity.
Why is this Needed?
If your property is in a subsidence-affected area, you are legally required to obtain this report before construction can proceed. It ensures your project is safe, suitable for the land, and compliant with building controls specific to areas at risk of mine-related ground movement.
How it Works
1. Go to the
Subsidence Advisory NSW website
2. Use the Property Search Tool to check if your property is in a Mine Subsidence District
3. If your property is within a subsidence area, you’ll need to lodge a Subsidence Assessment Application: Start application via Online Portal
4. Register or log in to the portal
5. Start a new assessment application and provide:
- Your property address
- A description of proposed works (e.g. new build, extension, garage, driveway)
- Attach site plan and floor plan (PDF format)
- Optional: Contract of sale, title documents, engineering or geotechnical reportsNew Paragraph
6. Submit the application
7. Subsidence Advisory NSW will review your submission
- They may request further documents or suggest changes to your plans
- Typical processing time: 5–15 business days
Once Received
Once you've received your Mine Subsidence Report, upload it to the Document Library and then click the
orange “Mark Complete” button to move to the next step in your construction workflow.
