Construction phase plan
The Construction (Design and Management) Regulations (CDM Regulations) are intended to ensure that health and safety issues are properly considered during a project’s development so that the risk of harm to those who have to build, use and maintain structures is reduced. They were introduced in 1994 and revised in 2007 and 2015.
The regulations require that, before the construction phase begins (that is, before the construction site is set up), the client ensures that a construction phase plan is drawn up by the contractor if there is only one contractor, or by the principal contractor if there is more than one contractor. If there is only one contractor, the contractor must either draw up a plan themselves, or make arrangements for it to be drawn up.
The construction phase plan (CPP) records arrangements for managing significant health and safety risks associated with the construction of the project and is the basis for communicating those arrangements to those involved in the construction phase. It outlines the health and safety arrangements and site rules taking into account any industrial activities taking place on site, and, where applicable, must include specific measures concerning any work involving the particular risks listed in Schedule 3:
- Work which puts workers at risk of burial under earthfalls, engulfment in swampland or falling from a height, where the risk is particularly aggravated by the nature of the work or processes used or by the environment at the place of work or site.
- Work which puts workers at risk from chemical or biological substances constituting a particular danger to the safety or health of workers or involving a legal requirement for health monitoring.
- Work with ionizing radiation requiring the designation of controlled or supervised areas under regulation 16 of the Ionising Radiations Regulations 1999.
- Work near high voltage power lines.
- Work exposing workers to the risk of drowning.
- Work on wells, underground earthworks and tunnels.
- Work carried out by divers having a system of air supply.
- Work carried out by workers in caissons with a compressed air atmosphere.
- Work involving the use of explosives.
- Work involving the assembly or dismantling of heavy prefabricated components.
Pre-construction information provided by the client forms the basis of the construction phase plan. The plan must also take into account information the principal designer holds and any information obtained from designers. Designers must provide information about the significant risks they have been unable to eliminate and the steps taken to reduce or control those risks. The principal contractor must also liaise with the contractors to ensure the plan takes account of their views.
During the course of the project, the principal contractor (or contractor) must ensure that the construction phase plan is reviewed, updated and revised.
The client must ensure the plan adequately addresses arrangements for managing risks and that the principal contractor (or contractor) regularly reviews and revises the plan.
The plan should be easy to understand and as simple as possible, should only include information relevant to the project, should provide sufficient information proportionate to the scale and complexity of the project and the risks involved. It should not include generic risk assessments, records of how decisions were reached or detailed safety method statements.
The principal contractor must ensure that employers and, if necessary for the protection of workers, self-employed persons follow the construction phase plan. Contractors also required to comply with the plan.
Managing health and safety in construction, Construction (Design and Management) Regulations 2015, Guidance on Regulations suggests the following topics should be considered when drawing up the plan:
- A description of the project such as key dates and details of key members of the project team.
- The management of the work including:
- The health and safety aims for the project.
- The site rules.
- Arrangements to ensure cooperation between project team members and coordination of their work, eg regular site meetings.
- Arrangements for involving workers.
- Site induction.
- Welfare facilities.
- Fire and emergency procedures.
- The control of any of the specific site risks listed in Schedule 3 where they are relevant to the work involved.
[edit] Related articles on Designing Buildings Wiki
- CDM.
- Construction strategy.
- Health and safety file.
- Health and safety policy.
- Lighting of construction sites.
- Method statements.
- Mobilisation.
- Mobilisation to site: a quality perspective.
- Notify HSE.
- Pre-construction information.
- Principal contractor.
- Principal designer.
- Project directory.
- Risk assessments.
Featured articles and news
Boiler Upgrade Scheme and certifications consultation
Summary of government consultation which closes 11 June 2025.
Deputy editor of AT, Tim Fraser, discusses the newly formed society with its current chair, Chris Halligan MCIAT.
Barratt Lo-E passivhaus standard homes planned enmasse
With an initial 728 Lo-E homes across two sites and many more planned for the future.
Government urged to uphold Warm Homes commitment
ECA and industry bodies write to Government concerning its 13.2 billion Warm Homes manifesto commitment.
Places of Worship in Britain and Ireland, 1929-1990. Book review.
The emancipation of women in art.
CIOB Construction Manager of the Year 2025
Just one of the winners at the CIOB Awards 2025.
Call for independent National Grenfell oversight mechanism
MHCLG share findings of Building Safety Inquiry in letter to Secretary of State and Minister for Building Safety.
The Architectural Technology Awards
AT Awards now open for this the sixth decade of CIAT.
50th Golden anniversary ECA Edmundson awards
Deadline for submissions Friday 30 May 2025.
The benefits of precast, off-site foundation systems
Top ten benefits of this notable innovation.
Encouraging individuals to take action saving water at home, work, and in their communities.
Takes a community to support mental health and wellbeing
The why of becoming a Mental Health Instructor explained.
Mental health awareness week 13-18 May
The theme is communities, they can provide a sense of belonging, safety, support in hard times, and a sense purpose.
Mental health support on the rise but workers still struggling
CIOB Understanding Mental Health in the Built Environment 2025 shows.
Design and construction material libraries
Material, sample, product or detail libraries a key component of any architectural design practice.
Construction Products Reform Green Paper and Consultation
Still time to respond as consultation closes on 21 May 2025.
Resilient façade systems for smog reduction in Shanghai
A technical approach using computer simulation and analysis of solar radiation, wind patterns, and ventilation.