The CDM 2015 regulations mean there must be a Construction Phase Plan (CPP) for every construction project – this includes kitchen installations, structural alterations, roofing, extensions or loft conversions. The regulations apply to everyone – it doesn’t matter if you’re part of a large team or working alone, there must be a CPP for each job.

On major builds, with teams of traders involved, the principal contractor, who leads the construction phase of the project, produces the CPP. On a small, domestic project, where you are the sole contractor or the principal contractor, you are responsible for:

  • preparing a plan
  • organising the work
  • working with others to ensure health and safety.

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Simple Construction Phase Plans

The Construction Phase Plan is there to help you think about health and safety on your projects. The Health and Safety Executive (HSE) states that ‘a simple plan before the work starts is usually enough’ for jobs that will last fewer than 30 days, or involve fewer than 20 workers. Anything that lasts longer will be too complex for a simple plan, and the principal contractor will need to notify the HSE about the job.

Easy ways to comply

  • Make drawing up a CPP part of your routine at the start of each job.
  • Use a template, such as the one created by the HSE, or your own adapted version. Some details will be the same for all jobs, and many potential hazards and measures to counteract them will be similar. If you have stock phrases for risks and the means to control them, you can fill the form out more quickly.
  • Use the Construction Industry Training Board (CITB) app CDM wizard, available for both Apple and Android phones. You can fill in the online template in less than five minutes for each job, and you can view the resulting form on your device or email it to whoever needs a copy.

What to include on your plan

These are the key points you need to note on your CPP.


  • Start and finish of the job.
  • When services will be connected/disconnected.
  • Build stages.

Information from the customer about the property

This includes:

  • the location of services and isolation points
  • access restrictions
  • if there is asbestos or other hazardous material on site.

Other workers

If anyone else works on the project, you should record their details, plus how you will communicate with them about:

  • site rules
  • health and safety information
  • changes or delays to the project
  • who the decision-makers are on the project.

Potential hazards

You must record any potential hazards on site and how you will control them. This includes using scaffolding if you work at height, supporting structures to prevent collapse, and so on.

Operational details

These include:

  • where the toilet, washing and rest facilities are
  • who will be responsible for safety on the project (just put your own name down if you are a sole trader)
  • how supervision will be provided (if appropriate).

The Which? Trusted Traders CDM Regulations 2015 download has a checklist of the areas you need to cover.

Filling in a CPP is a way of working through your thoughts about health and safety on each project before it starts. While much of the thinking may feel like common sense, creating the CPP shows you have processes in place to ensure safety on site, to protect you, your colleagues and your business. Make sure you are complying with the regulations and fill one in before the start of each project.

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