For budgeting purposes, rewiring a typical 3-bedroom house in the UK can be estimated at around £4,500–£8,000. The final price depends on the property layout, number of circuits and electrical points, cable access, specification of fittings and any additional work needed alongside the rewire.
Key Takeaways
- Allow roughly £4,500–£8,000 as an indicative budget for a 3-bedroom house rewire.
- The number of sockets, lighting points, circuits and fixed electrical supplies can materially change the quotation.
- Access through floors, ceilings and walls affects the amount of labour involved.
- Plastering, decorating and other making-good work may be separate from the electrical quotation.
- An older property does not automatically need a complete rewire; the condition and scope of the existing installation matter.
How Much Should You Budget for a 3-Bedroom House Rewire?
Indicative UK budget: £4,500–£8,000
This is a planning range rather than a fixed quotation.
Two 3-bedroom houses can require very different amounts of work. A straightforward property with accessible cable routes and a standard electrical layout may sit nearer the lower end of the range. A more complex installation, additional electrical points or difficult access can push the quotation higher.
Location also matters. Labour costs are not identical across the country, and London projects can fall towards the higher end. Homeowners specifically comparing prices in the capital should keep the separate guide to
rewiring costs in London
in mind rather than assuming a national estimate will apply unchanged.
What Affects the Cost of Rewiring a 3-Bedroom House?
Property size and layout
Bedroom count is only one part of the quotation. Floor area, the number of storeys, extensions and the route between rooms can all change the amount of cable and labour required.
Number of sockets, lights and circuits
A rewire is normally planned around the electrical layout the property needs. Adding more sockets, lighting points, controls or dedicated circuits increases the amount of installation work compared with a simpler specification.
Access to walls, floors and ceilings
Cable routes are a major practical consideration. Straightforward access under floors or through accessible voids is different from working around solid construction, difficult ceiling spaces or finished areas where routes are restricted.
Accessories and specification
Standard sockets and switches cost differently from higher-specification accessories or smart controls. The quotation should identify the agreed specification so that competing prices are being compared on the same basis.
Making good after electrical work
Rewiring can involve lifting floorboards and creating cable routes in walls. Plaster repairs, filling and final decoration are not necessarily included in the electrician's price, so this should be confirmed before work begins.
What May Be Included in a Full Rewire Quote?
The exact scope should be written into the quotation. Depending on the condition of the property and the agreed design, rewiring work can include:
- disconnecting or replacing outdated fixed wiring;
- installing new cables and circuits;
- new or replacement sockets, switches and lighting points;
- consumer unit work where it forms part of the agreed project;
- reviewing earthing, bonding and protective arrangements;
- inspection and testing of the completed electrical work; and
- the relevant electrical certification for the work carried out.
Do not compare quotations by the final figure alone.
Check the number of electrical points, accessory specification, consumer unit scope, testing, certification and making-good responsibilities before deciding which quote represents the same job.
Does Every 3-Bedroom House Need a Full Rewire?
No. Property age on its own does not establish that a complete rewire is necessary. Electrical Safety First advises that the condition and previous use of the installation are relevant, and older wiring should be assessed rather than assuming that age alone determines the answer.
Where problems are limited to part of the installation, the appropriate scope may be different from replacing all fixed wiring. The separate guide to
partial versus full rewiring
explains that decision in more detail.
This distinction matters for cost. A quotation for a complete house rewire should not be compared directly with a price for selected circuit replacement or a more limited alteration.
What Should You Check Before Accepting a Rewiring Quote?
A useful quotation should make the electrical scope clear enough for you to understand what is included and what remains your responsibility. Before comparing prices, check:
- which circuits and areas of the property are being rewired;
- how many sockets, switches and lighting points are included;
- whether the consumer unit is included or treated separately;
- the specification of visible accessories;
- whether testing and certification are included;
- what making-good work is included, if any; and
- whether additional work discovered after access is opened has been clearly addressed.
Defining the scope before work begins makes the price easier to understand and reduces the risk of comparing quotations that cover different electrical layouts.
Testing, Certification and Electrical Standards
Rewiring is fixed electrical installation work, so the completed installation needs appropriate inspection and testing for the work carried out. The IET publishes BS 7671, the UK national standard covering electrical installations, including new installations and additions or alterations to existing installations.
For work in dwellings in England, Approved Document P provides guidance on electrical safety under the Building Regulations and explains matters including design, installation, inspection, testing, information provision and when notification is required. The precise documentation and Building Regulations route depend on the work actually completed.
If certification after a rewire is your main question rather than the cost of the project itself, see
Do I Need a Certificate After a Rewire?.
References & Standards
Official guidance relevant to assessing and completing residential rewiring work.
Planning a Rewire for a London Property?
The most useful price comes from assessing the existing wiring, property layout and the electrical points you want before the scope is agreed.
Arrange a rewiring assessment