Extension electrical installation
When should extension electrical requirements be agreed?
A coordinated plan helps settle socket positions, lighting, appliance circuits and any board changes. Discuss them before walls and finishes close the routes.

Extension electrical installation — planning the work
For extension electrical installation, identify the affected circuit or proposed addition before agreeing work. Existing condition, supply arrangements and testing can influence the specification and the extent of the job.
More questions
about this service.
When should the electrician be involved in the building work?
Coordinate the installation with the wider building programme. Agree the electrical layout before first-fix work and finishes constrain cable routes.
What should be covered at handover?
Check operation, test results and relevant handover documentation.
Extension electrical installation by area
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