Full House Rewire: The Complete UK Guide — What It Is, What’s Included and What to Expect

A full house rewire gives your property a safer, stronger and more modern electrical system. Instead of patching old wiring room by room, a qualified electrician replaces outdated cables, upgrades circuits and prepares the home for today’s appliances, lighting, sockets, safety devices and everyday power use.

Many UK homeowners arrange a full rewire during renovation, before moving into an older property, after a poor electrical inspection or when the current wiring no longer supports safe daily living. This project affects more than convenience. It improves safety, reliability and the long-term usability of the whole home.

This guide explains what a full house rewire means, what it includes, what the process involves, how long the work may take and which certificate you should receive after completion. It also covers UK compliance basics, including Part P, BS 7671, electrical certification and building control.

What Is a Full House Rewire?

A full house rewire means a qualified electrician replaces the fixed electrical wiring across the whole property. The electrician does not repair one small section and leave the rest untouched. Instead, they upgrade the full electrical installation so the home can support modern safety standards and everyday power demand.

In simple terms, the electrician removes or disconnects old wiring, runs new cables, creates safe circuits and connects sockets, switches, lights, appliances and the consumer unit. The work can cover lighting circuits, socket circuits, cooker points, shower circuits, smoke alarms, extractor fans, outdoor power and other fixed electrical points.

A full rewire differs from a small electrical repair. Replacing one socket or fitting a light does not change the whole system. A full house rewire looks at the property as one complete electrical installation and rebuilds it properly.

In England and Wales, domestic electrical work must follow Part P of the Building Regulations. Part P focuses on reducing the risk of fire and electric shock in homes. Electrical work also needs to follow the correct technical standards, including BS 7671.

Full Rewire vs Partial Rewire

A full rewire covers the entire property. A partial rewire only upgrades selected rooms, circuits or areas.

For example, you might choose a partial rewire when you renovate a kitchen, replace an old lighting circuit or repair unsafe wiring in one part of the home. That can work when the rest of the installation remains safe and suitable.

A full house rewire makes more sense when the whole system looks old, damaged, unsafe or inconsistent. Many older homes have wiring from different decades, with several electricians or DIY attempts layered together. A full rewire gives the property a cleaner, safer and more reliable electrical layout.

The best option depends on inspection results, cable condition, circuit safety, future renovation plans and how you use the property.

What Does a Full House Rewire Include?

A full house rewire usually includes the main fixed wiring and electrical points throughout the property. The exact scope depends on the home, the existing installation and the layout you agree with the electrician before work begins.

A typical full rewire can include:

• New lighting circuits for rooms, halls, landings and outdoor areas
• New socket circuits for bedrooms, living rooms, kitchens and workspaces
• Cooker, hob, shower and appliance circuits where needed
• Smoke alarm wiring and extractor fan wiring where specified
• Consumer unit replacement or upgrade
• Earthing and bonding checks
• New switches, sockets and light fittings
• Circuit testing and final certification

The work usually covers bedrooms, living rooms, hallways, landings, kitchens, bathrooms, utility rooms, loft areas, garages and outdoor circuits if the agreed plan includes them.

A good electrician should not copy the old layout without thinking. Modern homes need more sockets, better kitchen planning, safer bathroom electrics, dedicated appliance circuits, outdoor power, internet points, security lighting and future-ready options.

New Cables, Sockets, Lighting and Consumer Unit

New cable installation sits at the centre of the project. The electrician routes cables through walls, ceilings, loft spaces or under floors so every circuit connects safely.

Sockets and switches then go into practical locations based on how you use each room. Living rooms may need power for a TV, router, lamps and chargers. Bedrooms may need sockets on both sides of the bed. Kitchens often need multiple appliance points and worktop sockets.

The consumer unit also plays a major role. It houses the protective devices that help reduce the risk of electric shock, overload and fire. During a full rewire, the electrician may upgrade the consumer unit so it suits the new installation and current safety expectations.

Items That May Need Separate Planning

Some extras may not come as standard unless you ask for them during the quote stage. These can include data cabling, CCTV wiring, smart home controls, EV charger supply, garden power, underfloor heating controls, alarm wiring, media walls and decorative lighting.

Discuss these features early. Late changes can delay the job, increase disruption and create extra work after walls or floors have already been finished.

What Does a Full House Rewire Involve?

A full house rewire usually follows a clear process: survey, planning, first fix, second fix, testing and certification. Each stage helps the electrician create a safe and practical installation.

The electrician starts with a property survey. They check the existing wiring, consumer unit, visible cable routes, earthing, bonding, access points and your requirements. They may ask how you use each room, which appliances you own, whether you plan future upgrades and whether renovation work will happen at the same time.

Next, the electrician plans the layout. This stage covers socket positions, switch positions, lighting points, appliance circuits, smoke alarms and any special electrical features.

First Fix Electrical Work

First fix means the electrician runs the new cables before fitting the final accessories. This stage can involve lifting floorboards, chasing walls, drilling access routes and pulling cables through the property.

This part usually creates the most disruption. You may see dust, noise, exposed cable routes and open access points. An empty property makes the work easier because electricians can move freely. A lived-in home needs more careful scheduling because furniture, floor coverings and daily routines can slow access.

Second Fix Electrical Work

Second fix starts after the electrician has installed the cables and prepared the surfaces for final accessories. At this stage, the electrician fits sockets, switches, light fittings, consumer unit connections and other visible electrical components.

The property starts to feel more finished during second fix. The electrician connects the circuits, labels the consumer unit and prepares everything for inspection and testing.

Testing and Certification

Testing checks that the new installation works safely. The electrician tests circuits, protective devices, earthing and other safety elements. This step does much more than a quick visual check.

After the installation passes testing, the electrician should give you the correct certificate. For a full house rewire, you should normally receive an Electrical Installation Certificate.

Why a Full House Rewire May Be Needed

Many homes need rewiring because the existing electrical system has become old, unsafe or unsuitable for modern life. Electrical installations do not last forever, and older wiring often struggles with today’s power demand.

A home that once powered a few lights, a television and basic appliances may now support laptops, chargers, kitchen equipment, smart devices, electric showers, outdoor lighting, home offices and entertainment systems.

Age alone does not create every problem. Poor DIY work, damaged cables, repeated tripping, buzzing sockets, burning smells, warm accessories and outdated fuse boxes can all point to electrical risk.

You may need a full house rewire when:

• Old wiring materials show signs of deterioration.
• The consumer unit no longer offers suitable modern protection.
• Circuits trip repeatedly without a clear appliance fault.
• Sockets look damaged, discoloured or overloaded.
• Previous electrical work looks messy, unsafe or inconsistent.
• A renovation exposes serious wiring problems.
• An inspection report highlights major issues.
• The home needs more sockets, lighting and dedicated circuits.

Electrical faults can create fire and shock risks. Ask a qualified electrician to inspect the installation before you make a major decision.

Full House Rewire Time: How Long Does It Take?

Full house rewire time depends on property size, access, room count, occupancy and extra electrical work. Electricians can usually complete a small empty property faster than a large furnished home.

Renovation projects can also speed things up because walls, ceilings or floors may already sit open. A lived-in property needs more care because the electrician must work around furniture, belongings, carpets and household routines.

Extra features can also extend the timeline. Additional sockets, outdoor electrics, smart controls, data cabling, electric shower circuits, kitchen redesigns or a new consumer unit location can all add time.

Empty House vs Lived-In Home

An empty house gives electricians easier access. They can lift boards, chase walls, isolate power and move through rooms without working around furniture or daily routines.

A lived-in home needs a more detailed plan. The electrician may work room by room, keep temporary power where possible and coordinate disruption around the household. This approach can make life easier during the project, although it may take longer overall.

Good preparation helps. Clear access to walls, sockets, loft spaces, cupboards and floor areas can reduce delays. Finalising socket and lighting positions before work starts also keeps the project moving.

Full House Rewire Certificate: What Should You Receive?

After a full house rewire, you should receive an Electrical Installation Certificate, often called an EIC. This document confirms that the electrician inspected, tested and recorded the new electrical installation.

A full house rewire certificate matters because it proves that a qualified person completed and checked the work against the relevant electrical standard. You may need it when selling the property, speaking with insurers or proving compliance after major electrical work.

In England and Wales, some domestic electrical work also needs Building Regulations notification. A registered competent person can usually handle this process. If the work goes through building control, you should receive the right compliance documentation.

Electrical Installation Certificate vs EICR

An Electrical Installation Certificate covers new electrical installation work, such as a full rewire.

An Electrical Installation Condition Report checks the condition of an existing installation. Homeowners, buyers and landlords often use an EICR to understand whether older wiring remains safe.

For a full rewire, the key document is the Electrical Installation Certificate. If you live in England or Wales, the work may also need a Building Regulations compliance certificate. If you lose a Part P notification certificate, NICEIC suggests using the Check My Notification tool. For missing EICs or EICRs, you normally need to contact the original contractor.

UK Rules and Standards for a Full House Rewire

A full house rewire should follow UK electrical safety standards and the relevant building rules for your location.

BS 7671, also known as the Wiring Regulations, gives electricians the main technical standard for electrical installations in the UK. Building Regulations set safety expectations for domestic electrical work.

In England and Wales, Part P plays a key role in domestic electrical safety. Notifiable work must follow the correct route. A registered electrician can self-certify certain work, while other projects may need local authority building control involvement.

Scotland and Northern Ireland use different systems. Registered electricians in Scotland still work to BS 7671 and issue safety certificates for electrical work. Northern Ireland guidance also refers to Electrical Installation Certificates for newly built or completely rewired properties.

Because rules differ across the UK, choose an electrician who understands the local compliance route.

How to Plan a Full House Rewire Properly

Good planning makes a full rewire much smoother. Once the electrician has chased walls and run cables, changes become harder. Before work begins, think carefully about how you use each room.

In the kitchen, plan points for the oven, hob, extractor, fridge freezer, dishwasher, washing machine and small appliances. Place worktop sockets where you actually prepare food, boil the kettle and use everyday devices.

Living rooms often need sockets for a television, router, lamps, gaming equipment, speakers and chargers. Bedrooms may need sockets on both sides of the bed, dressing table points, wall lights or home office connections.

Hallways and landings need practical lighting control. Bathrooms require extra care because water changes the safety rules. Outdoor areas need suitable weather-rated equipment and safe circuit design.

Think ahead too. You may not need an EV charger, data cabling, garden office supply or smart lighting today, but it makes sense to discuss future provision while the property already has open access.

What to Expect During the Rewiring Process

A full house rewire can disrupt daily life. Clear planning can reduce stress, but you should still expect noise, dust and temporary power interruptions.

Wall chasing can create dust. Drilling can create noise. Electricians may need to lift floorboards, move furniture, access loft spaces and work in almost every room. Carpets and finished surfaces may need protection or later repair.

Decoration usually sits outside the electrical work unless the quote says otherwise. Some electricians include basic making good. Others leave the walls ready for a plasterer or decorator. Clarify this before the job begins.

A clear schedule helps. Ask which rooms the electrician will start with, when the power may go off, whether they can provide temporary power and what access they need each day.

Choosing the Right Electrician for a Full House Rewire

A qualified and competent electrician should handle a full house rewire. This project needs proper design, installation, inspection, testing and certification. It does not suit guesswork or casual DIY.

Look for domestic rewire experience, proper insurance, strong reviews, clear communication and knowledge of certification requirements. In England and Wales, a registered competent person scheme can also make compliance easier.

Before you book, ask the electrician to explain the scope of work, project stages, access requirements, certification process, building control notification, consumer unit specification and lighting layout. Also ask how they handle hidden issues if they find problems during the job.

A reliable electrician will explain the process clearly and help you feel confident before work begins.

Final Thoughts on a Full House Rewire

A full house rewire gives an older property a safer and more practical electrical system. It replaces outdated wiring, improves circuit design, upgrades safety protection and gives you a properly tested installation.

The best results start with good planning. Think about how each room works, where sockets should go, which appliances need dedicated circuits and which future upgrades may matter later.

Most importantly, choose a qualified electrician who can complete the work to the correct standard and provide the right certificate. A safe electrical installation does more than power the home. It protects the property and everyone inside it.

Need a safe, certified full house rewire? Contact Ideal Electricians for a professional survey, clear rewiring plan and compliant electrical installation.

FAQs About Full House Rewire

1. What is a full house rewire?

A full house rewire means a qualified electrician replaces the fixed electrical wiring and main electrical accessories across the whole property. The work usually covers new circuits, sockets, lighting, switches, consumer unit work, testing and certification.

2. What does a full house rewire include?

A full house rewire usually includes new wiring for sockets, lights, switches, appliance circuits, consumer unit protection, smoke alarms where specified, earthing and bonding checks, testing and an Electrical Installation Certificate.

3. What does a full house rewire involve?

A full house rewire usually involves a survey, electrical layout planning, first fix wiring, second fix accessories, consumer unit connection, inspection, testing and certification.

4. How long does a full house rewire take?

The timeline depends on property size, access, occupancy, number of rooms and finish level. Electricians usually complete empty properties faster than lived-in homes because they can access rooms, floors and walls more easily.

5. Do I need a certificate after a full house rewire?

Yes. You should normally receive an Electrical Installation Certificate after a full rewire. In England and Wales, notifiable work may also need Building Regulations compliance documentation.

6. Can I live in the house during a full rewire?

You can live in the house during some rewires, but the project can disrupt daily life. Expect dust, noise, limited room access and temporary power interruptions. Many homeowners choose to move out if the work affects the whole property.

7. Is a full rewire better than a partial rewire?

A full rewire works better when the whole installation looks old, unsafe or unsuitable. A partial rewire can work when most circuits remain safe and only one area needs upgrading.

8. Will rewiring damage walls and floors?

Rewiring often affects walls, floors or ceilings because electricians need access for new cables. Ask the electrician before work starts whether they include making good or whether you need a plasterer or decorator afterwards.

9. Should I get an EICR before a full house rewire?

An EICR can help confirm the condition of the existing installation. If the property has old wiring, unknown electrical history or visible warning signs, an inspection can help you choose the right next step.

10. Who should carry out a full house rewire?

A qualified, competent and insured electrician should carry out a full house rewire. For notifiable work in England and Wales, a registered electrician can also make certification and Building Regulations compliance easier.