Rewiring an electrical installation

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Cost estimator

House rewire cost calculator

Estimate the cost of rewiring a UK home by size, scope, occupancy and region. Rewires vary with access and finish, so treat this as a budget guide.

Quick answer. A full rewire is roughly 3,500 pounds for a small flat to 8,000 or more for a large house, before plastering and decoration. Region, occupancy and access make a big difference.

Built by SparkCerts, certificate and job software for UK electricians. Figures follow BS 7671 and the IET On-Site Guide. Updated June 2026.

Indicative UK prices including making good to a basic standard and certification. Plastering and decoration are extra.

What moves the price of a rewire

A rewire is hard to price because little of the cost is the cable. Most of it is the labour of getting that cable through a finished building and making good afterwards. Two identical houses can differ by thousands depending on how easy they are to work in.

The main factors

What the figure includes

The estimate assumes lifting floors and chasing walls, then making good to a basic standard, plus testing and the certificate. It does not include plastering, decoration or flooring, which are a separate trade and a separate budget. A rewire ends in a full Electrical Installation Certificate, so it is a good point to bring an older property up to current standards, often with a new consumer unit at the same time.

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FAQs

How much does it cost to rewire a house in the UK?

A full rewire is roughly 3,500 pounds for a small flat to 8,000 or more for a large house, before plastering and decoration. Region, occupancy and access make a big difference.

Is it cheaper to rewire an empty house?

Yes. An empty, unfurnished property is quicker to work in, so labour is lower. Working around a lived-in home with furniture to move and rooms in use adds time and cost.

Does a rewire include plastering and decoration?

Usually not. Electricians make good chases and lifted floors to a basic standard, but plastering, decorating and flooring are normally separate trades and a separate budget.

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