Originally published as a guidance note in 2011 this document has been reissued as practice information. It has been updated to account for changes in legislation, case law and references to construction contracts since its original publication.

The document summarises what is meant by ‘acceleration’ in the construction industry, how acceleration can be achieved in practice, and how it can be valued. When used in connection with construction contracts, ‘acceleration’ generally refers to increasing the originally planned or current rate of progress of the work so as to complete the project (or, where the contract allows for the project to be completed in sections, a section of the project) earlier than would otherwise be the case.