How Much to Rewire a 3 Bed House

When you start thinking about rewiring a three bedroom house, it is important to understand that the cost covers far more than just replacing old wiring. A rewire includes removing the existing cables, fitting new circuits, sockets, switches and a modern consumer unit, and ensuring everything meets current safety standards. The work must comply with BS7671 Wiring Regulations and Part P of the Building Regulations, meaning it should always be completed by a qualified and registered electrician. The total price reflects not only the materials and labour but also testing, certification and the making good of any plasterwork afterwards.

Typical UK Price Range for a Three Bedroom Rewire

In most parts of the UK, the average cost of rewiring a three bedroom house ranges between £4,500 and £8,000, depending on the property type, layout and location. A straightforward rewire in a modern property might fall at the lower end, while older homes or those with difficult access may sit nearer the higher bracket. The total may rise further if you choose high end fittings, additional lighting circuits, smart home technology or data cabling. Labour rates also vary across the country, with electricians in the South East and London typically charging more than those in other regions.

Why the Cost Varies Between Homes

Every house presents different challenges that influence the final quote. Older homes built before the 1970s often contain outdated rubber or fabric insulation which must be removed completely, requiring additional labour. Solid walls, limited loft access or floors that cannot easily be lifted can also add to the time and effort needed. Decorative finishes play a part too, as homes with ornate plasterwork or tiled walls will require more careful preparation and restoration. The specification of fittings makes a difference, since premium finishes, dimmer controls, USB sockets and LED lighting cost more than standard options.

What Should Be Included in the Quote

A comprehensive quote from a qualified electrician should include the removal of old wiring, installation of new cables and circuits, a new consumer unit with RCD protection, replacement of all sockets, switches and lighting points, and thorough testing before certification. It should also include the issue of an Electrical Installation Certificate and a Building Regulations Compliance Certificate where applicable. Some electricians include basic plaster repairs or making good, while others leave decoration to a separate trade. Always confirm what level of finish is included before work begins to avoid unexpected costs later.

Additional Costs to Consider

Beyond the core wiring work, there are often secondary costs to bear in mind. Once the wiring is complete, you may need plastering, painting or floor restoration to return rooms to their original condition. If you plan to stay in the property during the work, there may be costs associated with temporary power solutions or short term accommodation. This can be particularly relevant for families with young children, as rewiring is dusty and noisy. Adding upgrades such as external lighting, garden sockets, smoke alarms or home automation during the rewire can also raise the overall spend but may prove more cost effective than adding them later.

How Long the Work Takes

For an average three bedroom house, a full rewire typically takes between five and ten days, depending on the layout, access and whether the home is occupied. If the property is empty, electricians can work more quickly, as they can turn off the power and access every area without restriction. Living in the home while the work is ongoing can extend the duration, as circuits must be managed carefully and only certain rooms can be tackled at a time. The project may also take longer in older properties where walls and floors need extra attention.

Should You Stay in the Home or Move Out

It is technically possible to stay in your house during a rewire, but it can be inconvenient. There will be dust, drilling and temporary loss of power to certain areas, so most homeowners find it easier to move out for a few days if possible. If remaining in the home, your electrician can complete the work in phases, ensuring you still have some electricity for essential appliances. However, this phased approach can increase costs slightly, as it slows progress and adds complexity. Empty homes always make the job faster and cleaner, saving both time and money in the long run.

Safety and UK Regulations

All rewiring work in a UK home must comply with the national wiring standard BS7671 and the Building Regulations Part P. Only electricians registered with a competent person scheme such as NICEIC, NAPIT or ELECSA are authorised to self certify the work. This ensures it is inspected, tested and declared safe for use. The new consumer unit must provide residual current protection through RCDs, and the earthing and bonding must meet the required standard. At the end of the job, you should receive an Electrical Installation Certificate confirming the system meets these safety requirements. Keep this documentation safe, as it will be needed if you sell the property or claim on insurance.

Common Mistakes That Increase Costs

One of the most frequent mistakes homeowners make is underestimating how much preparation and follow up work a rewire involves. It is unwise to decorate, fit carpets or renovate kitchens and bathrooms before rewiring, as most surfaces will need to be disturbed. Another mistake is choosing the cheapest quote without checking what it covers. Some low priced quotes exclude essential testing, certification or repairs, which can lead to higher costs later. Trying to mix old wiring with new circuits is also risky, as it can cause compatibility problems and fail safety tests. Always have your whole system assessed by a qualified electrician before making decisions.

Example Cost Scenarios

A standard three bedroom semi detached home with accessible loft and under floor space may cost around £4,500 to £5,500 to rewire using standard fittings. If the property is older, has thicker walls or more complex access, the cost may rise to £6,000 or more. A larger three bedroom property with premium finishes, smart home systems and high end switches could cost closer to £8,000. Every home is unique, which is why getting a written, itemised quote from a qualified electrician is always the best approach.

How to Get Accurate Quotes

When requesting quotes from electricians, be clear about what you need. List the number of rooms, sockets, and lighting points, and note any extras such as garden power, kitchen upgrades or EV charger installations. Ask each electrician to confirm that their price includes certification and compliance with Part P. It is wise to get at least three quotes for comparison, as this helps ensure you understand both the range and what each company offers. Always check the electrician’s credentials, including proof of registration with NICEIC or another recognised body.

Conclusion: Plan, Budget and Choose Wisely

Rewiring a three bedroom house is a major but worthwhile investment that enhances both safety and functionality. While the cost can seem high, it reflects the complexity of the work and the need to meet modern electrical standards. The average UK price sits between £4,500 and £8,000, with property condition, accessibility and fittings influencing the total. By planning the project carefully, preparing your home in advance and hiring a qualified electrician, you can ensure the process runs smoothly and your home’s electrical system remains reliable for years to come.