Change of https://www.gov.uk/guidance/tell-the-building-safety-regulator-about-completed-fibre-optic-cabling-work

Change description : 2026-09-22 13:00:00: First published. [Guidance and regulation]

Showing diff : ..2026-09-22 12:00:10.679799779 +00:00

Guidance

Tell the Building Safety Regulator about completed fibre optic cabling work

How to tell the Building Safety Regulator (BSR) you’ve installed fibre optic cabling in an existing higher-risk building in England.

Applies to England

Contractors and installers can use this form to tell the Building Safety Regulator (BSR) about completed fibre optic cabling work in an existing higher-risk building in England. A higher-risk building (HRB) has at least:

  • 7 storeys or is at least 18 metres high
  • 2 residential units or is a hospital or a care home

Check if you need building control approval

You must apply for building control approval if the work:

  • does not meet the criteria for submitting a notification to BSR
  • involves drilling through floors or ceilings, including in risers with fire-resisting compartmentation
  • is part of other building work carried out at the same time as cabling work

Before you start

You must tell BSR about completed fibre optic cabling work if all the following criteria apply:

Before you carry out the work, you must have prior written approval from the relevant person. This could be the:

  • accountable person for each part of the building where work is taking place
  • building owner or person responsible for managing the building

All completed work must comply with building regulations, including:

  • competent professionals planned, managed and carried out the work
  • appropriate fire stopping, weatherproofing and soundproofing
  • the use of compliant products and materials

If you carry out the work under the dispensation, your existing duties for the building’s golden thread and mandatory occurrence reporting still apply.

Submit one form for all qualifying fibre optic cabling work completed in the same building.

Start now

Information you’ll need to provide in your notification

You must use the online form to tell BSR as soon as possible after the work is completed.

If you’re the principal contractor

You need to provide:

  • your organisation’s details
  • a named contact’s details for your organisation
  • the client’s organisation, if applicable
  • the client’s details
  • details about the building and the work
  • the date the work was completed

If you’re a subcontractor or other person carrying out the work

You need to provide:

  • your details
  • the principal contractor’s details, including a named contact
  • the client’s organisation, if applicable
  • the client’s details
  • details about the building and the work
  • the date the work was completed

You should make a record of your answers on the ‘Check your answers before submitting your form’ page, as you will not receive a copy of them when you submit your notification.

When you submit the form, you will receive a reference number. Keep this for your records.

What happens next

BSR may use the information you provide to check if the building work needs further assessment.

If BSR determines that the work required building control approval instead of notification, it may investigate and take enforcement action where appropriate. Any costs will be charged under the BSR charging scheme.

Updates to this page

Published 22 September 2026

Sign up for emails or print this page

Update history

2026-09-22 13:00
First published.