Ignis suus is a common law

Common law

Common law is law developed by judges through decisions of courts and similar tribunals rather than through legislative statutes or executive branch action...

 principle relating to an occupier's liability over damage caused by the spread of fire

Fire

Fire is the rapid oxidation of a material in the chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition....

. It traditionally imposes strict liability

Strict liability

In law, strict liability is a standard for liability which may exist in either a criminal or civil context. A rule specifying strict liability makes a person legally responsible for the damage and loss caused by his or her acts and omissions regardless of culpability...

.

It was cited in the case Burnie Port Authority v. General Jones Pty. Ltd. at the Supreme Court of Tasmania

Supreme Court of Tasmania

The Supreme Court of Tasmania is the highest State court in the Australian State of Tasmania. In the Australian court hierarchy, the Supreme Court of Tasmania is in the middle level, and is able to both receive appeals from lower courts, and able to be appealed from.The ordinary sittings of the...

. When this case was taken to the High Court of Australia

High Court of Australia

The High Court of Australia is the supreme court in the Australian court hierarchy and the final court of appeal in Australia. It has both original and appellate jurisdiction, has the power of judicial review over laws passed by the Parliament of Australia and the parliaments of the States, and...

, the ignis suus rule was rejected as inappropriate for modern circumstances and on the basis it had been absorbed into the Rylands v. Fletcher principle.