Mine Subsidence Districts
Check if a property is in a Mine Subsidence District using our maps or searching for the property on the NSW Planning Portal.
Mine Subsidence Districts are proclaimed 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 (SANSW) under the Coal Mine Subsidence Compensation Act 2017 to help protect homes and other structures from potential mine subsidence damage.
Building or subdividing within a district
SANSW regulates building and subdivision works within districts to ensure new homes and structures are built to an appropriate standard that reduces the risk of damage should subsidence occur.
All development within a district is required to meet SANSW’s approval requirements. Building and subdivision applications must be submitted and approved prior to commencing work.
Compensation for mine subsidence damage within a district
SANSW provides compensation for mine subsidence damage to buildings and other structures.
All structures are eligible for compensation should they be impacted by mine subsidence, provided that if located in a Mine Subsidence District they have been constructed in accordance with the relevant approvals.
Structures that were built in an area before it being proclaimed as a district are automatically eligible for compensation should mine subsidence damage occur.
Download Mine Subsidence District maps
SANSW is committed to ensuring Mine Subsidence Districts remain up to date and regular reviews are completed.
You can find out if a property is in a Mine Subsidence District online through the ePlanning Spatial Viewer.
The Mine Subsidence District maps do not show individual property details but can be used as general guide to the boundaries of a Mine Subsidence District.
NSW Planning Portal ePlanning Spatial Viewer
Using the NSW Planning Portal ePlanning Spatial Viewer you can:
- find out if the property is in a Mine Subsidence District
- find out which SANSW development guideline is assigned to the property
- find out if the property is in an area where underground coal mining has occurred.
Accessing Subsidence Advisory NSW’s layers
- Go to the ePlanning Spatial Viewer.
- Search for the property by street address or Lot/Section/DP.
- Once the address has been verified and the property is displayed on the map 'Search Results’ will appear on the right-hand side of your screen. These include all the NSW planning layers applicable to the property.
- If the property is in a Mine Subsidence District, or in an area with underground coal mining the following results will appear:
- The layers can also be turned on by going to the 'Layers and Legends' menu on the left-hand side of your screen, then selecting ‘Subsidence Advisory’ which will have each listed.
- To find out more information about each layer click the + next to each result. This can give you information on which Mine Subsidence District the property is in and what development guideline has been assigned to the site.
Underground Coal Mining Area map layer
The 'Underground Coal Mining Area' spatial layer provides property owners and purchasers with a quick and easy tool to find out if a property is in an area where underground coal mining has occurred. This ensures people are better informed about potential subsidence risks.
The underground coal mine geospatial data on the NSW Planning Portal has been created by Subsidence Advisory NSW (SANSW), based on the confidential information held by the Resources Regulator within the NSW Department of Planning, Industry and Environment.
In no event shall SANSW become liable to users of this geospatial data. No warranty is expressed or can be implied to any other person as to the accuracy, currency and completeness of the said data or that it is free from any error or omission. Accordingly the State of New South Wales, SANSW and their servants and agents expressly disclaim any liability whatsoever for the consequences arising from any act done or omission made in reliance by others on the information contained within the NSW Planning Portal.
The information shown herein is a general representation of features and must not be used for the basis of any risk assessment purpose. The location of the underground coal mine workings must be independently verified by the portal user.
To ensure that appropriate documentation and data limitations are provided, this database cannot be redistributed to any other parties.
Frequently asked questions
Some mine subsidence districts are declared in areas where underground coal mining may occur in the future. The underground mining areas on the NSW Planning Portal only show areas where coal extraction has already occurred.
All potential mines are considered by the NSW Department of Planning, Industry and Environment and need to go through a rigorous approval process before mining can occur.
SANSW has created the Underground Coal Mining Area spatial layer based on the official Mine Survey Plans held by the NSW Resources Regulator within the NSW Department of Planning, Industry and Environment.
The spatial layer includes properties that are located above or in close proximity to underground coal mine workings. As some underground coal mining in NSW took place over 100 years ago, it is possible that there are discrepancies between the position of mine workings and where they are shown on the official Survey Plans. To account for slight discrepancies, the Underground Coal Mining Areas include a buffer zone around historical mine workings.
The Underground Coal Mining Areas only relate to areas where coal has been extracted and do not include other types of mining such as metalliferous or open cut coal extraction.
Just because a property is mined beneath does not mean it will be impacted by subsidence. SA NSW records indicate that in the last 10 years less than 2% of properties located in areas where underground coal mining has occurred have been impacted by subsidence.
Typically, mine subsidence occurs unnoticeably over a period of time as the ground beneath settles. Buildings damaged by subsidence generally remain safe and people can continue to occupy them until their claim is resolved and the property is repaired.
In rare situations, subsidence caused by historical mining at a shallow depth can result in a hole in the surface of the ground. Subsidence holes can be big or small but they can all be dangerous and must be treated with caution. Subsidence holes and other types of safety, security or serviceability concerns arising from subsidence should be reported immediately to SA NSW’s 24 Hour Emergency Hotline on 1800 248 083. SANSW will coordinate a response and ensure the issue is promptly addressed.
SANSW is making information on areas where underground coal mining has occurred publicly available to ensure property owners are informed and can recognise the signs of subsidence in the extremely unlikely case their property is impacted.
A Mine Subsidence District is a tool used by SANSW to help protect homes and other structures from potential mine subsidence damage through regulation of development. All development within districts requires SANSW approval.
Not all underground coal mining presents the risk of subsidence damage to development. As a result, there are some areas where mining has occurred that SANSW does not consider necessary to proclaim within districts. These areas include those where:
- there is limited development
- the underground mining is unlikely to create subsidence risks
- the method used to extract coal means there are unlikely to be any ongoing subsidence risks.
All homes and buildings in NSW, irrespective of whether they are located within a mine subsidence district, are eligible for compensation if they are damaged by mine subsidence provided applicable approvals have been met.
If a home or structure has been damaged by mine subsidence, the property owner can lodge a claim for compensation with SANSW.
The underground mining areas provide a general indication of areas where underground coal mining has occurred in NSW. It does not mean that all properties within the identified area have been directly mined beneath.
As underground coal mining has occurred in NSW for over 100 years, it is possible for the position of old mine workings to differ slightly from that shown on the Mine Survey Plans. To account for possible discrepancies in the position of old mine workings, the Underground Coal Mining Areas include a buffer zone around historical mine workings.
Properties within this buffer zone will show as within an Underground Coal Mining Area despite not shown as directly mined beneath on the official Survey Plans held by the NSW Resources Regulator within the Department of Planning, Industry and Environment.
The NSW Resources Regulator within the Department of Planning, Industry and Environment is the official holder of Mine Survey Plans in NSW.
Under clause 127(3) of the Work Health and Safety (Mines and Petroleum Sites) Regulation 2014, the Resources Regulator can only make a copy of a survey plan to a person in certain circumstances.
To find out more or make an application for copies of survey plans, please visit the NSW Resources Regulator website. Generally, these records are not available to the public.
No. The Underground Coal Mining Areas on the NSW Planning Portal do not include areas where coal mining is planned in the future. The layer only shows areas where coal extraction has occurred.
SANSW updates the underground mining areas approximately every three months based on official mine record tracings provided by the NSW Resources Regulator within the NSW Department of Planning, Industry and Environment.
SANSW updates the underground mining areas on the NSW Planning Portal approximately every three months based on official records provided by the NSW Resources Regulator within the Department of Planning, Industry and Environment.
There are many areas in NSW where the presence of underground mining is well known and there is high demand for property.
SANSW provides a fair, efficient and sustainable compensation scheme for dealing with the impacts of coal mine subsidence to protect the value of property and safety of the community. For example, Newcastle has a long history of successfully managing subsidence risks while maintaining a vibrant property market.
Areas where there are potential subsidence risks to development are included within a mine subsidence district so SANSW can help prevent damage and reduce the impact on property owners should subsidence occur