About CDM

Find out about the Construction (Design and Management) Regulations (CDM), and where you can get further resources and support.

CDM are the main set of regulations for managing the health, safety and welfare of construction projects.

Watch our short video which explains the basics of CDM.

Direct video link

Key points to CDM Regulations 2015

The project must follow all of Steps 1 and 2 PLUS the client must notify HSE of the project.

Download an A4 poster (660KB PDF) here which illustrates these key points.

Step 1

All projects must have:

workers with the right skills, knowledge, training and experience,
contractors providing appropriate supervision, instruction and information,
a written construction phase plan. Download this example (146KB, PDF)

Step 2

Projects involving more than one contractor (domestic or non-domestic):

must follow Step 1 plus:
a principal designer and principal contractor must be appointed,
a health and safety file.

Step 3

If work is scheduled to:

last longer than 30 working days and,
have more than 20 workers working simultaneously at any point in the project,
OR exceeds 500 person days.

About CDM

Key points to CDM Regulations 2015

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