COST GUIDE

Full Rewire Cost Guide

A practical guide to how full rewires are priced, what pushes the total up or down, and how to explain the quote in a way clients can follow on a phone.

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10 min readUpdated 2026-05-18Andrew Moore, Founder of Elec-Mate

Written and reviewed by Andrew Moore, founder of Elec-Mate, against BS 7671:2018+A4:2026, IET Guidance Note 3 and the IET On-Site Guide.

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Key Takeaways

  • 1Full rewire prices usually depend on property size, access, number of circuits, finishes, making good, and the amount of testing needed.
  • 2The biggest price changes often come from chasing routes, difficult access, occupancy during the work, and any extra upgrades needed to make the installation right.
  • 3A clear quote should separate labour, materials, testing, certification, and any optional extras so the client can see what is included.
  • 4If the rewire becomes part of a bigger project, the quote should also show where the electrical work stops and the follow-on work begins.
  • 5Elec-Mate helps keep the estimate, invoice, and certificate workflow together so the handover stays clear from first price to final sign-off.
01 · Cost Guide

What determines the price of a full rewire

A full rewire is rarely priced from a single figure. The final number depends on the size of the property, how easy it is to run cables, how much of the installation is being renewed, and how much time is needed to test and finish the job properly. A small flat with straightforward access is not the same as a larger house with awkward loft routes, thick walls, or limited working hours.

For a wider view of how rewires are usually costed, rewire cost UK is the best companion page. If the job is more of a consumer-unit-led upgrade than a full installation replacement, consumer unit replacement cost is the better starting point.

02 · Cost Guide

Main cost drivers on a full rewire

  • Property size and layout, including the number of rooms, floors, and consumer circuits.
  • Ease of access for cable routes, especially in older or heavily finished properties.
  • How much decoration or making-good is needed after the electrical work is complete.
  • The amount of testing, certification, and client handover needed at the end of the job.
  • Whether the work has to be done around occupants, furniture, or other trades already on site.

Do not hide the awkward parts

If the job has difficult access, temporary power needs, or extra time for making good, include that in the quote. A cheap-looking quote that omits the hard parts usually creates problems later.

03 · Cost Guide

How to structure the quote clearly

  • Separate labour, materials, testing, certification, and any optional extras.
  • State what is included in the rewire and what is not.
  • Show any assumptions about access, occupancy, making good, or supply changes.
  • Explain whether the quote covers a like-for-like rewire or a wider upgrade package.
  • Keep the wording simple enough for a customer to read on a phone without needing a second explanation.

If the quote also needs a board change, the consumer unit upgrade cost guide helps you separate the rewire from the board upgrade. That stops the customer seeing one large figure with no explanation behind it.

Price the job in minutes, not evenings

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04 · Cost Guide

When the job grows beyond the original estimate

Full rewires often uncover extra issues once walls are opened up or old circuits are removed. If that happens, keep the change clear. Add the extra scope, update the price, and explain why the revised figure is higher so the customer can see the reason rather than just the total.

Once the work is agreed, the electrical quoting app helps turn the estimate into a tidy, itemised quote. When the job is complete, the electrician invoice app keeps the billing side just as clear.

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