Principal Designer

CDM 2015 defines the Principal Designer as the Designer with control over the pre-construction phase of the project. This is the very earliest stage of a project from concept design through to planning the delivery of the construction work.

The Principal Designer is an organisation (or on a smaller project they can be an individual) that has a technical knowledge of the construction industry relevant to the project, and the understanding and skills to manage and coordinate the pre-construction phase, including any design work carried out after construction begins.

It is important for the Principal Designer to establish and maintain good relationships with the client, principal contractor and other designers on the project.