Submit a mandatory occurrence notice and report
Use this service to submit both a mandatory occurrence notice and a mandatory occurrence report for higher-risk buildings, including high-rise residential buildings, to the Building Safety Regulator.
You must submit a mandatory occurrence notice and report for safety occurrences in higher-risk buildings, including high-rise residential buildings, related to fire spread, fire safety or structural failure that resulted in, or are likely to result in:
- the death of a significant number of people
- serious injury that needs immediate treatment in hospital for a significant number of people
- a permanent or irreversible disabling condition to a significant number of people
Safety occurrences include both:
- an incident that has happened
- the risk of an incident happening in the future
You must do this even if the safety occurrence is remedied immediately.
Read detailed guidance on safety occurrences that must be reported to the Building Safety Regulator.
Who must submit a mandatory occurrence notice and report
Submit a mandatory occurrence notice and report if you are, or you are acting for:
- an accountable person or principal accountable person
- principal contractor or principal designer and construction work has started on the building
Mandatory occurrence notice
You must submit a mandatory occurrence notice as soon as you can when a safety occurrence is identified, and before you submit your report.
We will ask you to tell us:
- the high-rise residential building registration reference or the building control application reference
- your contact details
- the date and time the safety occurrence was identified
- a brief description of the safety occurrence
- any immediate actions you’ve taken since to keep people safe
When you submit a mandatory occurrence notice, we will give you a reference number you can use to submit a mandatory occurrence report.
Mandatory occurrence report
You must submit a mandatory occurrence report after submitting your notice and within 10 calendar days of identifying the safety occurrence.
We will ask you to tell us:
- your mandatory occurrence notice reference
- who submitted the notice – if someone else submitted the notice, we will need your contact details
- the type of safety occurrence you are reporting
- what happened or has the potential of happening
- what caused the safety occurrence and how it was discovered
- who is involved and the effect or potential effect on them
- what you have done and plan to do to keep people safe
- anything you think should be shared for others to learn from
- any supporting information, such as documents, videos, or photos
Get help using this service
If you cannot use the online service, call the Building Safety Regulator on 0300 790 6787. The Building Safety Regulator is open Monday to Friday from 8.30am to 5pm, except Wednesdays when we are open from 10am to 5pm.
A translation service is available if you would prefer to speak in a language other than English.