Signs Your Home Needs Rewiring in Arundel

Published September 2026 | Signs your home needs rewiring

We asked our Electrician engineers the questions Arundel homeowners ask most. Here's what they told us.

What are the most common signs that a home needs rewiring?

This is the question our engineers get asked more than almost any other, and the answer often surprises people. The signs aren't always dramatic. In fact, most homeowners in Arundel are alarmed to discover they've been living with warning signs for years without realising it.

The most common indicators our engineers flag include persistent flickering or dimming lights, sockets or light switches that feel warm to the touch, a burning smell with no obvious source, fuses that blow frequently, discoloured or scorched socket plates, and circuit breakers that trip on a regular basis. None of these should be dismissed.

Warm switches and sockets are particularly concerning because they often point to wiring that's either overloaded or has developed a fault inside the wall where you can't see it. A burning smell is urgent. If you notice one and can't locate the source, switch off at the consumer unit and call a qualified electrician before doing anything else.

There's also one less obvious sign worth mentioning: a house that relies heavily on extension leads and multi-socket adapters. If you're using them constantly because you simply don't have enough sockets, your wiring was almost certainly designed for a time when homes had far fewer electrical demands. That's not necessarily a crisis in the short term, but it does suggest the system isn't keeping up with how you're actually using the property.

How old does wiring have to be before it becomes a concern?

This depends on the type of wiring and how it's been maintained, but as a general rule our engineers recommend paying close attention to any installation that's more than 25 to 30 years old. That doesn't automatically mean it needs replacing, but it does mean it needs testing.

The age thresholds that matter most are these. Pre-1966 wiring is almost certainly outdated. If your property has rubber-insulated cables, they will have deteriorated significantly over time and almost always need replacing outright. Wiring from the 1960s to 1980s typically uses PVC insulation which lasts longer, but installations from this period commonly lack modern safety features such as RCD protection. Properties wired in the 1990s can still be serviceable, but they're approaching the point where a full Electrical Installation Condition Report becomes essential.

Arundel has a large stock of older properties - Georgian and Victorian terraces, flint cottages, and period conversions - and our engineers regularly find wiring in these homes that's been patched and extended over the decades rather than replaced properly. That kind of piecemeal work can create real hazards, particularly where old and new wiring are joined incorrectly or where the original cables are hidden behind later alterations.

The safest first step is to have an Electrical Installation Condition Report (EICR) carried out by a registered electrician. This gives you a formal assessment of the condition of your installation and identifies anything that's unsafe or no longer meets current standards.

Are flickering lights always a sign of a serious problem?

Not always, but they should never be ignored. Our engineers explain it this way: a single light that flickers occasionally is often down to a loose bulb or a failing fitting. But if multiple lights are affected, or if the flickering happens consistently and you've already ruled out the obvious causes, that points to something within the wiring itself.

The most likely underlying causes of persistent flickering include loose connections at the consumer unit, a failing or overloaded circuit, poor connections at individual sockets or fittings, and arcing within cables or connections.

Arcing is the one that concerns electricians most. It occurs when electricity jumps across a gap in a damaged or poorly connected wire. It can generate enough heat to start a fire inside a wall cavity without any visible warning from the outside. Older homes that haven't had their wiring inspected in many years are at a higher risk of this kind of fault developing undetected, and by the time there's a visible sign, the situation has often already become serious.

If flickering is accompanied by a buzzing sound or a faint smell, treat it as urgent. Book an inspection rather than waiting to see whether things improve on their own.

What is a consumer unit and when does it need replacing?

The consumer unit - what most people still call the fuse box - is the central hub of your home's electrical system. It distributes power to individual circuits and houses the protection devices that cut the supply if a fault develops. Understanding what type you have matters more than most homeowners realise.

Older consumer units commonly contain rewirable fuses, which means when a fuse blows, someone has to manually replace the fuse wire before power is restored. Modern units use circuit breakers and RCDs (Residual Current Devices), which trip automatically and reset with the flip of a switch. The difference isn't just about convenience. RCDs provide a level of personal protection that older fuses simply can't offer, particularly against electric shock.

Your consumer unit likely needs replacing if it contains old-style fuse wire rather than circuit breakers, if it has no RCD protection, if it's wooden-backed (common pre-1990s and now considered a fire risk due to its combustibility), or if it's showing any signs of overheating or burning around the casing.

Replacing a consumer unit typically costs between 500 and 900 pounds for a standard domestic installation, though the final figure varies depending on the size of the property and whether any additional work is required. This is one of the most cost-effective safety upgrades you can make. Our engineers have found wooden-backed consumer units in several Arundel properties in recent years, particularly in older homes that haven't had significant electrical work carried out since they were built.

What does a full rewire cost in the UK?

This is the question homeowners often dread asking, but the numbers are less alarming than many expect. The cost depends primarily on the size of the property and the complexity of the work involved.

Typical price ranges in the current market run roughly as follows. A one-bedroom flat or small terraced house typically comes in at 2,500 to 4,000 pounds. A three-bedroom semi-detached property is commonly between 4,000 and 6,500 pounds. A four-bedroom detached house tends to fall in the 6,000 to 10,000 pound range. Period properties or listed buildings can add 20 to 40 percent on top of these figures, due to the additional care and complexity the work requires.

These figures include materials, labour, and the completion certificate that confirms the work meets current regulations. They don't cover decoration, since rewiring typically involves chasing cables into walls and making good the plasterwork afterwards - that's usually a separate cost.

Labour rates in West Sussex are broadly in line with the wider South East, so expect to pay towards the higher end of national averages. Getting at least three quotes from NICEIC, NAPIT, or Elecsa registered electricians is sensible, and make sure each quote covers the same scope of work so you're comparing like with like. The Voltrade GoFIX diagnostic tool can help you build a clearer picture of what your installation actually needs before you start gathering quotes, which puts you in a much stronger position when speaking to contractors.

Can I stay in my home during a rewire?

In most cases, yes, but you'll need to accept some disruption and plan around it. A full rewire is one of the more intrusive pieces of work a home can go through. Cables need to be run through walls, floorboards may need lifting, and there will be periods each day when power is off to sections of the house.

Practically speaking, you'll typically have power to some circuits each day but not all. Cooking on an electric hob may be disrupted during parts of the process, so a microwave or camping stove can help bridge the gap. Dust and plaster will be a factor throughout, so protecting furniture and flooring from the outset saves a lot of cleaning up. A full rewire on a three-bedroom house typically takes between five and ten working days, depending on the complexity of the installation.

Some homeowners choose to stay with family or in temporary accommodation during the work, particularly if young children or elderly relatives are in the property. Others stay throughout and manage around it. There's no single right answer - it depends on your personal circumstances and the scale of the work.

If the property is currently empty - for example if you've recently purchased a house in Arundel that needs updating before you move in - that's the ideal time to carry out a rewire. Working in an unoccupied property avoids most of the disruption and often allows the work to proceed more quickly.

What happens during an electrical inspection?

An Electrical Installation Condition Report (EICR) is the formal process for assessing the safety of your home's wiring. Our engineers carry these out on a regular basis, and homeowners are often relieved to find it's less invasive than they'd anticipated.

Here's what the process typically involves. First, there's a visual inspection of the consumer unit, sockets, switches, and fittings throughout the property. This is followed by circuit testing using specialist equipment to identify faults, deterioration, and any areas of non-compliance with current standards. The engineer will also check that earthing and bonding arrangements are correct, and test RCDs and circuit breakers to confirm they respond as they should.

The process typically takes three to four hours for an average-sized home. You'll receive a written report at the end that codes any issues found. A C1 code means danger is present and requires immediate action. A C2 means the installation is potentially dangerous and needs addressing promptly. A C3 is a recommendation for improvement - it doesn't indicate a current danger, but it flags something worth addressing when you're planning future work.

An EICR for a standard three-bedroom home in the Arundel area typically costs between 150 and 300 pounds. Landlords are legally required to have one carried out every five years. Owner-occupiers should consider commissioning one every ten years, or whenever buying or significantly renovating a property.

Are there specific considerations for older and listed properties?

Arundel and the broader West Sussex area have a particularly high proportion of listed buildings, period properties, and older construction styles. These homes present specific challenges electrical work, and our engineers approach them differently from a modern build.

Listed building consent may be required before cables are chased into walls or any structural elements are disturbed. Original features such as lime plaster, cornicing, and wall panelling need to be protected carefully during the work. Some period properties have unusual layouts or materials that affect how cables can be routed through the building. And many older homes in this area have had multiple generations of electrical work carried out over the decades, creating a complex mix of old and new wiring that can be difficult to trace and potentially hazardous.

The solution in most cases isn't to avoid the work - it's to plan it carefully. A thorough pre-work survey allows a good electrician to identify the best routes for new cabling and to work with the character of the property rather than against it. It takes more time than rewiring a modern home, which is reflected in the cost, but it's entirely achievable with the right approach. If you own a listed or period property and you're concerned about the state of your wiring, commissioning an EICR gives you a clear baseline to work from before any planning conversations begin.

How urgent is it if my home fails an EICR?

It depends on the category of failure, and this is something our engineers find homeowners often misread in both directions - either underestimating a C1 finding or worrying more than necessary about a C3.

A C1 finding means there is immediate danger present. This requires action before the property continues to be occupied or before the affected circuit remains live. Examples include exposed live conductors, absent or inadequate earthing connections, or severely damaged cables. If your EICR returns a C1, don't wait.

A C2 finding means the installation is potentially dangerous. You don't need to vacate the property, but you do need to arrange remedial work promptly - typically within a few weeks. Most registered electricians will prioritise these jobs when contacted. A C3 is a recommendation rather than a requirement. It might flag that your installation doesn't comply with the very latest edition of the wiring regulations even though it isn't actively dangerous in its current state. You're not obliged to act on a C3, but it's worth factoring in when planning any future electrical work.

If you're buying a property and the survey reveals C1 or C2 findings, that's useful information to have during negotiations. Remedial electrical work is a legitimate basis for renegotiating the purchase price or asking the seller to carry out repairs before completion.

In summary

Electrical faults are among the leading causes of house fires in the UK, and the majority are preventable. The signs that a home needs rewiring are often subtle at first - a flickering light here, a warm socket there - but they rarely improve without intervention. For homeowners in Arundel and across West Sussex, particularly those in older properties, an EICR is the single most useful first step you can take. It tells you exactly what you're dealing with, puts any risks in clear context, and lets you plan any necessary work on your own terms - rather than waiting for a problem to force your hand at the worst possible moment.

How do I know if my home has an old-style fuse box that needs replacing?

Open the cover of your consumer unit and look inside. If you can see ceramic or rewirable fuses rather than plastic circuit breakers with switches, it almost certainly needs replacing. A wooden backing board inside the unit is another clear indicator that it predates modern safety standards and should be upgraded.

Is rewiring always required, or can individual circuits be repaired?

Not every electrical problem requires a full rewire. In some cases, replacing a faulty circuit, upgrading the consumer unit, or repairing a specific section of wiring is sufficient. An EICR will tell you exactly what needs doing and what the priority order should be, so you can address the most important issues first without necessarily committing to a full rewire straight away.

Do I need to notify anyone before having my home rewired?

Yes. Rewiring work falls under Part P of the Building Regulations in England, which means it must either be carried out by a registered competent person who self-certifies the work, or be notified to your local authority building control department before it starts. Any reputable registered electrician will handle this process as part of the job.

How long does rewired wiring typically last?

Modern wiring installed to current standards can typically last 25 to 40 years or more, provided the installation isn't overloaded and the property is kept in reasonable condition. Regular EICR checks every ten years help catch any deterioration early and confirm the system is still performing safely within its expected lifespan.