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Rewiring and upgrades

How Long Does a Rewire Take?

Short answer: longer than you'd hope, shorter than you'd fear. Here's a realistic look at timescales and what affects them.

3 min read · Updated October 2026

Calendar with eight days ticked off beside a clock, a toolbox and a cable drum

Typical timescales

For the electrical work alone, a small flat might take three to five working days. A typical three-bedroom house often takes somewhere around one to two weeks. Larger or more complicated homes can take longer.

Then there's making good – plastering and finishing walls and ceilings – which is usually a separate job afterwards.

The two stages

First fix is the messy bit: lifting floorboards, cutting channels, running new cables and fitting back boxes. That's where most of the time goes. After the walls are plastered, the electrician comes back for second fix – fitting sockets, switches, lights and the consumer unit, then testing and certifying everything.

The gap between the two depends on your plasterer, so it's worth lining them up early.

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What slows things down

  • Living in the house while the work goes on
  • Solid floors, stone walls or concrete ceilings
  • Lots of extra points, lighting circuits or smart controls
  • Changes of mind halfway through
  • Faults or surprises found under floors – it happens
  • Waiting for other trades

Planning tips

Agree a schedule with your electrician before they start, including which rooms will be done when and when you'll be without power. Ask whether they'll restore temporary power each evening – most do for occupied homes.

Common questions

Can a rewire be done in a weekend?

Not usually, except perhaps for a very small flat with easy access.

Will I be without power for the whole job?

Not usually. Most electricians restore power to at least part of the house at the end of each day.

Does a rewire need building control?

In England and Wales, a rewire is notifiable work. A registered electrician can self-certify it.

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