Calculate your consumer unit cost
Consumer unit cost by property size in London
The UK property examples are adjusted using the same moderated 25% regional weighting as the live calculator.
UK £350£375
UK £350£375
UK £550£600
UK £750£800
UK £800£850
Current UK consumer-unit cost breakdown
These component prices remain national benchmarks rather than being presented as measured city-specific equipment prices.
Installed benchmark comparison
What can change a real London quote?
- Number of circuits
- RCBO, MCB/RCD or other configuration
- Condition of existing wiring
- Electrical inspection and testing
- Meter tails, bonding and remedial faults
- Moving the consumer unit
- Property size and regional labour
Local planning considerations
Dense access, parking, deliveries and contractor overheads can widen the spread between quotations, so use the figures as an early budget rather than a quote.
- Allow separately for parking, loading, permits or restricted delivery windows where a property has difficult street access.
- Flats and managed buildings can add landlord, freeholder or building-management requirements that are outside a basic works estimate.
- Party-wall, structural and access costs should be checked independently on extensions, lofts and major internal alterations.
How the regional model works
The live consumer-unit calculator applies only 25% of the broad London regional difference because the consumer unit and protection devices are nationally priced equipment while local labour is only one part of the installed total. The resulting London factor is 1.070×.
Sources
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 a consumer unit replacement cost in London in 2026?
The current UK benchmark is about £485 for a populated 10-way RCBO consumer unit including installation. Applying the same moderated regional factor as the live calculator gives a London planning reference of about £500.
What is the consumer unit cost range in London?
Current UK guidance runs from about £350 for smaller six-circuit homes to around £800 for larger homes with 12 or more circuits. The live calculator's regional model gives a London planning range of about £375–£850 before additional remedial work.
Why should supply-only and installed consumer-unit prices be kept separate?
A populated 10-way RCBO unit is currently about £250 supply only, while the common installed benchmark is about £485. Comparing a supply-only product price with a complete electrician quote can make the installed cost look misleadingly high.
What can increase a consumer unit replacement quote?
More circuits, remedial faults, testing, meter-tail work, relocation, difficult access and defects in the existing installation can all increase the final total.