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Commencement and building work regarded as commenced

Before submitting a notice

Before submitting any notice referred to on this page, a valid Building Regulations application must already be in place.

Depending on the type of application, different notice requirements may apply.

Apply for building regulations approval

Understanding the difference

If your project requires commencement notices, you may need to submit both of the following:

  • a commencement notice before work starts

  • a building work regarded as commenced notice once the work reaches the statutory commencement stage

These notifications serve different purposes and are submitted at different points during the project.

Step 1: Commencement notice

Before work starts, you must notify Building Control of your intention to commence work.

Work must not start until:

  • a commencement notice has been submitted; and

  • at least two days have passed since the notice was given.

Download commencement notice (Microsoft Word format, 105kb)

Step 2: Building work regarded as commenced notice

Once work reaches the statutory commencement stage, you must submit a building work regarded as commenced notice within five days.

This is a separate legal requirement from the commencement notice.

Download building work regarded as commenced notice (Microsoft Word format, 109kb)

Commencement notice compared to Building work regarded as commenced notice

Commencement notice

Building work regarded as commenced notice

Submitted before work starts

Submitted after work reaches the statutory commencement stage

Notifies Building Control of your intention to start work

Confirms that work has reached the commencement stage defined by the Building Regulations

Must be submitted at least 2 days before work starts

Must be submitted within 5 days of the work reaching the commencement stage

Inspections

Submitting a 'commencement notice' or a 'building work regarded as commenced notice' does not automatically arrange a Building Control inspection.

Inspections must be requested separately at the appropriate stages of the work.

Inspection requirements will vary depending on the type and complexity of the project and will be confirmed in your inspection schedule and / or by your building inspector.

Important

It is the responsibility of the person carrying out the work to request inspections at the appropriate stages and before work is covered up.

Request an inspection

When is work regarded as commenced?

There is an important difference between starting work and work being regarded as commenced.

For Building Regulations purposes, work is only regarded as commenced once it reaches the stages set out in Regulation 46A. This is the stage used when considering matters such as whether an application may lapse.

New houses and extensions

Work is generally regarded as commenced when the following have been completed:

  • all foundations

  • the substructure

  • any basement level (where applicable)

  • the structure of the ground floor level

Excavating foundation trenches alone will not normally be sufficient.

Complex buildings

Work is generally regarded as commenced when:

  • the foundations supporting the building have been completed; and

  • the structure of the lowest floor level has been completed.

Examples of complex buildings include:

  • buildings sharing a foundation podium or plinth with another structure

  • buildings with more than one storey below ground level

  • public buildings designed to accommodate 100 or more visitors.

Other building work

For other types of building work, work is generally regarded as commenced when at least 15% of the overall work has been completed.

Not sure whether your project has reached the work regarded as commenced stage?

Please contact Building Control for advice before submitting a 'building work regarded as commenced notice'.

What happens after I submit a notice?

Commencement notice

Once received, the notice informs Building Control of your intention to start work.

You must allow at least two days to pass after the notice has been submitted before work begins.

Submitting a Commencement Notice does not arrange an inspection. Inspection requests must be made separately.

Building work regarded as commenced notice

Building Control may:

  • request additional information

  • inspect the work

  • require work to be opened up for inspection where necessary

If we are not satisfied that the statutory commencement stage has been reached, we may issue a rejection notice explaining why.

If no rejection notice is issued within four weeks of receiving the notice, the work will be regarded as commenced.

Frequently Asked Questions

Do I need to submit both notices?

For applications where commencement notifications apply, yes. They are separate notifications submitted at different stages of the project.

Do the notices arrange inspections?

No. Inspections must be requested separately.

Can my Building Regulations application lapse?

Yes. If work does not reach the stage where it is legally regarded as commenced within the relevant three-year period, your Building Regulations application may lapse.

I'm not sure whether my project has reached the commencement stage.

If in any doubt, please contact Building Control to discuss your individual circumstances.

Who to contact

Name
Contact Building Control
Email
building.control@salford.gov.uk
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