An Introduction To CDM 2015 header image

2nd June, 2015

An Introduction To CDM 2015

The Construction (Design and Management) Regulations (often referred to as CDM regulations) were updated this year, with the new CDM 2015 regulations coming into force on the 6th of April 2015.

This update replaces the former 2007 regulations.


The CDM regulations apply to all construction projects no matter how big or small. Under the regulations, additional duties apply to all projects with more than one contractor.

To achieve its objectives the CDM regulations place duties on virtually everyone involved in construction work, particularly on key members of the project team such as the client, designers and contractors. CDM 2015 applies to all construction projects including domestic.

Duty holders

The Duty Holders required under CDM 2015 include:

  • Clients
  • Designers
  • Contractors
  • Workers
  • Principal Contractor (More than one contractor projects)
  • Principal Designer (More than one contractor projects)

Why CDM?

Construction is a high risk industry. The purpose of the CDM regulations is to focus the attention of the project team on the health and safety aspects of the project, to improve the planning and management of projects, to facilitate the early identification of hazards, and to place responsibilities and efforts where they can most benefit health and safety.

Notifiable projects are usually projects lasting over 30 working days (with more than 20 workers) or 500 person days and need to be notified to the HSE. Unlike under the CDM 2007 regulations, the notification does not trigger additional duties, and the requirements to make duty holder appointments now apply to all projects (including domestic) where there is more than one contractor.

CDM Documents

In addition to the types of H&S documentation you require under other H&S regulations (policy, risk assessments, inductions etc) the CDM regulations place additional documentation requirements on construction projects, including:

This article was written by Emma at HASpod. Emma has over 10 years experience in health and safety and a degree in construction management. She is NEBOSH qualified and a member of IOSH.

Need CDM Help?

Get CDM support on your construction projects with our free guides and support packs for all duty holders.

CDM Support

Recent posts like this...

How To Assess Competence For CDM

The requirements for competence has changed slightly in the current 2015 version of the regulations compared to the previous 2007 version. But compentence is still an important part of CDM requirements, so here's what competence means, and how to assess it for CDM.

Read Post

What The CDM Regulations Say About Welfare Facility Requirements

The CDM regulations do have some specific requirements when it comes to welfare facilities on construction sites. Welfare facilities include sanitary conveniences (toilets etc), drinking water, places for rest, washing and changing facilities. Let's find out more about what's required.

Read Post

Can The Client Be The Principal Contractor Under CDM?

It is possible for the same person or organisation to be both the client, and the principal contractor under CDM. However, there are projects where the client should be the principal contractor and projects where they shouldn't. In this blog post we consider each situation.

Read Post

HASpod makes health and safety simple.

Learn More