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Doing some building work?
Date updated: 10/06/2025
Do you need Building Regulation approval?
Building Regulations approval is needed for all ‘building work’ as defined in the Regulations. You will need Building Regulation approval for most alterations to, and refurbishment of, existing buildings as well new buildings. Such as
- New buildings
- Altering partitions in a commercial premises
- Extensions
- A shop fit-out
- Fit-out works
- Replacing a fire alarm system
- Changing drainage in a residential kitchen
- Most electrical work in a house or flat
- Replacing windows
Please note: this list is not exhaustive.
Check with us before starting work
The precise definition of building work can be confusing. If you are unsure as to whether you need Building Regulations approval, call 020 7332 1000 and we will advise and guide you through the process.
Applications
Applications for demolitions and temporary structures are dealt with by the City of London District Surveyors and are explained more fully in Demolition Notices and Special and Temporary Structures pages.