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Key Changes of CDM 2015

  • Changes to notification thresholds and requirements.

  • Replacement of CDMC with PD Domestic client, no longer exempt from duties, client has more duties in general.

  • Simplify approved code of practice and detailed competence requirements.  

Why were they Changed?


  • Unacceptable standards especially on smaller sites.

  • Regulations had been over-interpreted and not clear.

  • CDM was not being made important early enough in project.

  • CDMC was not integrated into design team, and not responsible for making design decisions.

  • CDM was considered an add on.

Key Features

Identifying Duty Holders, Establish Responsibility & Clarifying RolesClient to establish early importance of CDM Regulations 2015.


Duty Holders

  • Regulations 4 and 5 set out the client’s duty to make suitable arrangements for managing a project and maintaining and reviewing these arrangements throughout.

  • Where a construction project must be notified, the client must submit a notice in writing to the relevant enforcing authority.

  • Regulation 8 Duty Holders - must have the skills, knowledge and experience and, if they are an organisation, the organisational capability, necessary to fulfil the role that they are appointed to undertake, in a manner that secures the health and safety of any person affected by the project


Client to recognise the duty holders and appoint them where appropriate.

  • Send Client HSE CDM website link.

  • Client to appoint a PD with separate appointment to design appointment.

  • Client is responsible for notifying the project F10 Form (before it was CDMC responsibility).

  • Domestic clients have responsibilities of CDM 2015, must notify if more than one contractor will be working at the same time.

Principal Designer (PD)

  • PD must have right ‘skills, knowledge, and experience to do the job.

  • They should be integral to the design team and can influence the design from an early stage. 

  • Can be architect, supported by H&S consultant, but depends on project.

  • Architect needs to charge & have insurance for this service.PD responsible for plan, manage, coordinate H&S during the preconstruction phase, and into construction.

  • Using general principles of prevention, make sure everyone is aware of their duties.

  • Establish an early appointment with the client, presenting your scope of works.

  • Connect with all designers involved and maintain a strong level of connectivity throughout the appointment.

  • Responsible for plan, manage monitoring H&S during the construction phase.

  • Establish an early appointment of the Contractor.

  • Early involvement in the CDM design is key as they will be completing the works.

  • A strong PD & PC relationship is important.All designers should design minimising risk.

  • Designers must be informed of the latest CDM information.

  • Must notify the PC & PD of potential H&S issues caused by their designs.

  • Must be up to date on CDM obligations and access to current CDM files.

  • Must communicate any alterations or works that may jeopardise the CDM procedures put in place and wait for a strategy to alleviate risk prior to commencement of their works.

  • To be aware and up-to-date with the latest CDM regulations and compliant with the CDM measures on site, to report any incidents inconsistent with the standards in place.

  • Meet & Liaise Schedule regular site visits throughout the appointment.

  • Meet During the preconstruction phase and during the construction period.

  • Keep a constant vigil during the construction phase, to see if you design criteria are being met.

  • Hold regular meetings during and before the construction phase.

  • Meeting with the PC with an agenda specific to the CDM Regulations and minuting the event is imperative for critical design development throughout the life of the project.

  • The client brief for the project needs to be understood by the PC and PD which requires effective communication and the building of a relationship.

  • Being proactive in this will aid the process of designing out risk, identifying risk and dealing with risk for all matters that effect the Health and Safety of the project.







Pre-construction Phasing – Team Work is Everything – Design & Consult.


  • Regulation 11 - The principal designer must plan, manage and monitor the pre-construction phase and coordinate matters relating to health and safety during the pre-construction phase to ensure that, so far as is reasonably practicable, the project is carried out without risks to health or safety.

  • All duty holders to contribute to the preconstruction phase of the project.

  • Regular design coordination to be scheduled for critical milestones.

  • CDM is for the lifetime of the project.

  • All duty holders must design out risk for end users as well.

  • Construction Phase – Preparer and React.

  • Regulation 12 -The construction phase plan must set out the health and safety arrangements and site rules taking account, where necessary, of the industrial activities taking place on the construction site and, where applicable, must include specific measures concerning work which falls within one or more of the categories set out in Schedule 3. 

  • Site Attendance – Site attendance will go hand in hand with overseeing the job, however it is important to set up individual meetings to discuss CDM specific events and strategies prior to various phases throughout the duration of the project.


Report and React -If anything is not in accordance with the pre-phase plan, make sure that you question this, and get suitable documents for changes. Inform the PC and Contractors that all changes to the construction phase plan must be discussed and agreed in writing by the PD.


Preparation – Keep on top of the Health and Safety file so that it is not rushed at the last minute.


User Guide to CDM Regulations 2015

Construction Design Management

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