When should I have my house rewired? And how much does it cost?

As homeowners, we often focus on the aesthetics and functionality of our homes, but one crucial aspect that might go unnoticed is the electrical wiring. The electrical system is the backbone of any home, responsible for powering our devices, appliances, and lighting.

Over time, electrical wiring can become outdated and unsafe, potentially leading to electrical hazards and inefficiencies.

In this blog, we’ll explore when you should consider rewiring your home and the cost involved, the benefits it can bring beyond safety, and the types of homes that may be more susceptible to electrical problems.

Signs it’s Time to Rewire

Frequent Circuit Breaker Tripping

If your circuit breaker trips frequently or if you notice flickering lights when using high-power appliances, it could be a sign of overloaded or faulty wiring.

When the circuit breaker trips, it means that the flow of electricity to a specific circuit has been interrupted to prevent overheating and potential electrical hazards.

While occasional tripping can be normal, frequent tripping indicates an underlying problem that requires immediate attention.

circuit breaker tripping

Outdated Wiring Materials

Older homes might have wiring made of aluminium or knob-and-tube systems, which are not deemed as safe and efficient compared to modern copper wiring.

In the 1960s and 1970s, aluminium wiring was used as a cost-effective alternative to copper. However, aluminium wiring has a higher risk of overheating and causing fires due to its different thermal expansion properties compared to copper.

Knob-and-tube wiring was commonly used in homes built before the 1940s. It consists of ceramic knobs and tubes to secure and protect the wires. However, knob-and-tube wiring lacks grounding, and its insulation may degrade over time, increasing the risk of electrical hazards.

Over the years, electrical wiring standards and materials have evolved to meet the demands of modern technology and to improve overall safety, so if your home has aluminium or knob-and-tube wiring, it may be time to upgrade to modern copper wiring to prevent electrical damage.

Burning Smell or Scorch Marks

It’s obvious – but this indicates electrical overheating and should be addressed immediately to avoid potential fires.

Some common causes of burning smells or scorch marks include overheated wires, faulty outlets and overloaded circuits.

If you have any of these symptoms in your home – schedule a callout with us and we’ll carry out an inspection on your electrical wiring.

electrical socket scorch

Frayed or Damaged Wiring

Physical damage to wiring, such as exposed wires or visible deterioration, requires immediate attention.

Over time, electrical wires can deteriorate due to natural wear and tear. Exposure to environmental factors like temperature changes, moisture, and physical stress can lead to the breakdown of wire insulation.

Amateur electrical work or improper DIY installations can also cause wires to be nicked or cut, leading to fraying and potential hazards.

frayed wiring danger hazard

The benefits of rewiring your house

While safety is the primary concern when rewiring a home, there are several other benefits to be had.

Increased Energy Efficiency

Modern wiring and electrical systems are designed to be more energy-efficient, leading to potential cost savings on electricity bills.

Enhance the value of your Home

A rewired home with updated electrical features is likely to have a higher resale value, making it an investment in your property.

Support for Modern Technology

Rewiring allows you to accommodate modern technological advancements, such as smart home devices and charging stations for electric vehicles.

Improved Electrical Capacity

Upgrading the electrical system ensures it can handle the power demands of today’s electrical appliances and gadgets.


We had to include this – the safety benefit of rewiring your home is one of the most compelling reasons to consider rewiring your home.

Faulty or deteriorating wiring is a leading cause of electrical fires in homes. Rewiring ensures that all electrical components, including wires, outlets, and switches, are in optimal condition, reducing the risk of electrical fires caused by overheating.

Old or damaged wiring can also create electrical hazards, such as electrical shocks and electrocution

house rewiring

What types of homes are more susceptible to electrical problems?

While any home can experience electrical issues, certain types of homes may be more prone to them…

Older Homes: Properties constructed several decades ago may have outdated wiring systems that are not up to current safety standards.

DIY Electrical Work: Homes where previous owners attempted electrical work without proper expertise may have faulty wiring that needs to be corrected.

Historic Buildings: Vintage or historic homes may have original electrical systems that are inadequate for modern electrical demands.

Homes in High-Humidity Areas: Moisture can damage wiring over time, making homes in high-humidity regions more susceptible to electrical problems.

High humidity home

How much does it cost to rewire a house?

The cost of rewiring a house can vary significantly depending on several factors, such as the size of the property, the complexity of the wiring, the number of rooms and the material cost.

As a rough guide, we’ve supplied some real estimates we’ve issued customers below.

  • Small Property (1-2 bedrooms): The cost of rewiring a small property may start at around £3,000 to £5,000.
  • Medium Property (3-4 bedrooms): For a medium-sized property, the cost can range from £5,000 to £8,000.
  • Large Property (5+ bedrooms): Rewiring a larger property could cost anywhere from £7,000 to £10,000 or more.

Looking for a quote to rewire your house?

Here at Foster Electrical Services, we’ve rewired both domestic homes and commercial buildings all over Norfolk and Suffolk.

Whether it’s to supply you with peace of mind or for budgeting purposes, you can request an electrical inspection and rewiring survey via our website.

Request a quotation or survey

Whether you require a simple plug change or complete building rewiring, fill in our simple quotation/survey request form and one of our electrical experts will be in touch.

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