How much does a new consumer unit cost – Advice from Electriman, North London Electricians

How Much Does a New Consumer Unit Cost in the UK?

Replacing your consumer unit (also called a fuse box) is one of the most important electrical upgrades you can make. Here's what you need to know about the costs involved.

Typical Costs

Supply only (unit cost): £50–£200 depending on size and type

Labour only: £200–£500 depending on location and complexity

Full installation (supply + labour): £300–£800 for most homes

Large homes or complex rewires: £800–£1,500+

What Affects the Price?

Number of circuits: A 10-way board costs more than a 6-way

Type of protection: RCBO-protected boards (one device per circuit) cost more but offer better protection than dual RCD boards

Metal vs plastic: Since 2016, metal-clad units are required by BS 7671 — older plastic units cannot be legally installed as replacements

Location: London and the South East typically cost 20–30% more than other regions

Access and additional work: If cables need extending, earthing needs upgrading, or the meter tails require replacement, costs rise

Types of Consumer Unit

Dual RCD (split load) board: Lower cost option, typically £300–£450 fitted — less protection if one RCD trips

Full RCBO board: Each circuit has individual protection, typically £450–£700 fitted — preferred option

Smart/Surge Protected boards: £600–£1,000+ fitted

What Should Be Included?

Always ask you

Need a qualified electrician in North London?

Electriman covers Mill Hill, Barnet, Finchley, Edgware, Enfield, Watford and surrounding areas. All work is Part P certified and fully insured.