Calculate consumer unit replacement
Consumer unit cost by property size
Supply-only versus installed cost
Relocation can change the budget sharply
This is why a quote for a straightforward board swap should not be compared directly with one that includes relocation, supply alterations or wiring repairs.
What should the quote state?
- Consumer-unit type and number of usable ways.
- Whether RCBO protection is included.
- Inspection, testing and certification.
- Meter-tail, earthing or bonding work.
- Any remedial faults discovered before replacement.
- Whether the old board is removed and disposed of.
Source
Consumer Unit Replacement Cost Guide 2026
Used for current equipment, labour, inspection, property-size and relocation benchmarks. Cost table last updated June 2026.
Frequently asked questions
How much does a consumer unit replacement cost in 2026?
A typical current benchmark is about £485 for a populated 10-way RCBO consumer unit including installation. Straightforward homes commonly range from about £350 to £800 depending on circuits and property size.
How much is a consumer unit for a semi-detached house?
Current guidance gives about £550 supplied and installed for a semi-detached property, assuming the existing wiring is in good condition and the board is not being relocated.
What is the difference between the £250 and £485 figures?
Around £250 is a current supply-only benchmark for a populated 10-way RCBO consumer unit. Around £485 is a typical installed replacement figure. Compare supply-only and installed prices separately.
What can make a consumer unit replacement cost more?
More circuits, defects found during testing, meter-tail or bonding work, a larger board, difficult access and relocating the consumer unit can all increase the total.