Novus actus interveniens
‘novus actus interveniens’ ("new act intervening") is a legal term which refers to breaking the chain of causation such that even if the defendant has acted negligently, a subesquent intervening action breaks the chain of causation with the loss or damage sustained and so the defendant is not liable.
This can be as a result of:
- The action of a third party, unless the action was foreseeable, such as negligence by a third party.
- The action of the claimant where their actions were disproportionate or unreasonable.
- Some natural event or coincidence, such as an extraordinary weather event.
Under certain circumstances, the courts may decide to apportion the loss between the parties.
See: Contribution and apportionment for more information.
[edit] Related articles on Designing Buildings
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
The heritage of nuclear and conventional power stations.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.
CIAT publishes briefing on planning reforms.
Leaders in Learning for Practice Network
Call for conservation leaders in learning to register interest in new network.
The importance of early engagement
Construction lessons from the Trillium HealthWorks Experience Centre.
Mayors are to be given planning call in powers
Mayors across England will be able to make the most important planning decisions.
The Master Builder: William Butterfield and his times. Book review.