What affects the cost?
Consumer unit replacement cost depends on circuit count, unit type, testing requirements and whether existing wiring faults need remedial work before the new board can be certified.
- Number of circuits
- MCB or RCBO configuration
- Electrical inspection
- Meter tails and bonding
- Faults found during testing
- Region and access
Typical cost breakdown
Regional planning examples
The examples below apply our published modelling factor to the same national benchmark. They are not claimed as observed city-wide average quotes.
Sources used for this guide
Consumer Unit Replacement Cost Guide
Published / checked: Cost table updated June 2026
Used for: Consumer unit supply, installation, inspection and common complete replacement benchmarks
Frequently asked questions
How much does it cost to replace a consumer unit?
A current UK planning benchmark is around £485 for a populated 10-way RCBO consumer unit including installation, with many homes falling roughly between £350 and £800.
Can any electrician replace a consumer unit?
Consumer unit replacement is notifiable electrical work and should be carried out and certified by an appropriately registered electrician.
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