The average cost to replace a consumer unit (you might know it as a fuse box) is between £450 and £800.
The price normally includes the replacement of the consumer unit, a test of your electrical installation and the issuing of an Electrical Installation Certificate and Building Regulations Compliance Certificate.
However the cost of replacing a fuse box with a consumer unit, or installing a new one will vary depending on several factors.
In this guide we:
- List the average costs for replacing a consumer unit based on the number of circuits
- Explain the factors that affect the overall cost of the job
- Provide you with the knowledge to calculate a rough price based on your needs
Average costs to replace a consumer unit
The table below gives you a rough idea of what to expect when replacing a consumer unit in terms of the cost of the consumer unit and the labour required to install it.
|Unit||Cost of Materials||Cost of Labour||Time|
|6 circuits||£150||£300 – 400||4 – 5 hours|
|10 circuits||£180||£400 – 500||5 – 6 hours|
|12 circuits||£200||£500 – 600||6 – 7 hours|
What factors influence the cost of replacing a consumer unit?
- Standard: Costs that apply to the trade as a whole
- Job specific: Costs that are unique to the installation and replacement of consumer units
- Person specific: Costs that are influenced by personal needs and preferences
Standard costs to replace consumer unit
Standard costs include:
- Your location
- The size of your property
- The age of your property
- The necessary materials
- The complexity of the job
The bigger a property is, the more materials, effort and time it requires – all of which increase the cost. Similarly, an older property or complex job will require more time and labour and therefore cost more.
It’s also worth bearing in mind that the rate of labour varies across the country, so where you live (i.e. London vs the north-east) always plays a role.