ELECTRICAL · UPDATED 2026-04-01
Fuse Board / Consumer Unit Upgrade Cost London 2026
£500 – £1,200 per board
A consumer unit (fuse board) upgrade in London costs £500–£1,200 including certification. LPG NICEIC-approved electricians replace old fuse boxes with modern RCD-protected units.
Fuse Board Upgrade price breakdown — London 2026
| Job | Price range | Unit |
|---|---|---|
| Consumer unit upgrade · small property | £500 – £700 | full job |
| Consumer unit upgrade · standard house | £650 – £950 | full job |
| Consumer unit upgrade · large house | £800 – £1,200 | full job |
What affects the price
- Number of circuits. Larger properties with more circuits require bigger consumer units and more testing time.
- Condition of wiring. If existing wiring is found to be unsafe, remedial work will be required.
- Testing requirement. All consumer unit changes require an EICR to verify the installation.
Frequently asked questions
How long does a fuse board upgrade take?
A standard consumer unit upgrade takes 4–8 hours, usually completed in one day.
Why should I upgrade my fuse board?
Modern consumer units include RCD protection that can save lives by detecting earth faults. Old fuse boxes often lack this safety feature.
Related cost guides
Get a binding fuse board upgrade quote
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