F10 notification: check if you need one, and prepare it
Pro and above
Open your project's F10 Notification page. First it answers the question that matters: does this job need notifying at all?
If your project is notifiable
Review the Pre-filled F10 Data panel.
Start date, duration, principal contractor and designer, worker and contractor counts — pulled from your project so you're not re-deriving them on the HSE form. Gaps show as "Not set": fill them on the Details tab first.
Click Open HSE F10 Portal and copy each field into the HSE's online form.
Back here, click Mark F10 as Submitted.
The submission date is recorded against the project — your evidence that notification happened before work began.
Submit before work starts
The F10 must be in before the construction phase begins — it's the first thing an inspector checks on a notifiable job. Generate your Construction Phase Plan alongside it; the pre-filled data confirms a CPP is in place.
Frequently asked questions
When does a project need an F10?
Under CDM 2015: construction work lasting more than 30 working days with more than 20 workers on site at once, or exceeding 500 person-days. The page checks your project's duration and workforce automatically and tells you either way.
Does The Site Book submit the F10 to the HSE for me?
No — the HSE only accepts F10s through its own online form. We pre-fill the data for you to copy across, link you to the HSE portal, and record the date once you mark it submitted.
The check says my project isn't notifiable — is that recorded?
Yes, the page states the project doesn't exceed the thresholds, based on the details you've entered. If the job grows (longer duration, more workers), update the project details and check again — notifiability can change.
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