Consumer unit replacement cost in the UK: 2026 guide
Understand typical fuse-box replacement pricing, testing and why remedial work can change the final bill.
Applies to: UK homeowners. Consumer-unit work is safety-critical and may be notifiable depending on the nation and circumstances.
Last checked: 3 October 2026
Key points
• Current 2026 guidance puts a typical consumer-unit replacement around £450–£800.
• The published average is roughly £625.
• Existing faults or non-compliant circuits can add remedial work.
• Testing and certification should be included in the scope.
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Typical 2026 cost
Current UK market guidance puts a consumer-unit replacement range of roughly £450–£800, averaging around £625.
Why the quote can grow
• Number of circuits.
• Existing wiring defects.
• Earthing and bonding issues.
• Surge protection or additional protection requirements.
• Access and labelling/testing work.
Do not compare the box price alone
The consumer unit itself is only part of the job. Safe isolation, testing, fault identification, installation and certification are central to the work.
Official sources
Use these official sources for the current detail that applies to your job, contract or location.
Further sources
Additional published guidance and research used in this article.
Pricing methodology
BuildPair reviews current UK market pricing references when preparing cost guides. Published figures are budgeting ranges, not BuildPair quotes or guaranteed local prices. Compare current local quotes before appointing a tradesperson.
BuildPair provides general information and signposting, not legal, structural, electrical, gas or building-control approval. Requirements can change and the right answer depends on the work, contract, location and facts.
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