CDM/General/TBT-CDM-013

F10 Notification Requirements

CDM & Legal Framework › General › F10 Notification Requirements

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An F10 notification informs the HSE that a construction project is about to start.
CDM 2015 Regulation 6 requires notification for projects lasting longer than 30 working days with more than 20 workers.
Notification is also required if the project exceeds 500 person-days of construction work.
The client is responsible for ensuring the F10 is submitted to HSE before the construction phase begins.
The F10 must include project details, client information, and appointments of principal designer and contractor.
A copy of the F10 must be displayed in the site office where it can be read by all workers.
The notification must be updated if key details change during the project such as PC or PD appointment.
Failure to notify is a criminal offence under CDM 2015, enforceable by the HSE.
The F10 can be submitted electronically through the HSE website at no charge.
Notification helps HSE target inspection resources at higher-risk construction projects.

Legal requirement	CDM 2015 makes F10 notification mandatory for qualifying projects — failure to notify is a criminal offence.
HSE oversight	Notification allows the HSE to plan inspections and target resources at projects with higher risk profiles.
Project accountability	The F10 establishes a formal record of duty holder appointments and project details from the outset.

Don't

DON'T start the construction phase without submitting the F10 where required
DON'T assume notification is the principal contractor's responsibility — it is the client's
DON'T leave the F10 unfiled — it must be visibly displayed in the site office
DON'T ignore changes to key appointments — update the F10 with HSE promptly
DON'T calculate thresholds incorrectly — include all workers across all trades
DON'T forget that 500 person-days triggers notification regardless of project duration
DON'T treat F10 notification as optional — it is a legal requirement under CDM 2015
DON'T submit incomplete information — HSE requires accurate project details
DON'T discard confirmation of notification — keep it in the project health and safety file
DON'T confuse the F10 with other notifications such as asbestos or demolition notices

See also: CDM 2015 Awareness | Client Duties Under CDM

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