Home extensions are one of the most popular ways homeowners in Cheshunt add space and value to their property.
Extra kitchens, rear extensions, loft rooms and open plan living areas can completely transform how a home feels and functions. However, one area that is often overlooked during an extension is the existing electrical system.
At JJB Electrical, we regularly carry out inspections and remedial work in Cheshunt homes where electrical problems only started after an extension was completed. In many cases, the issues are not immediately obvious and can develop quietly over time before turning into safety concerns.
Why electrical issues often appear after an extension
Most extensions involve adding new lighting, sockets, appliances and sometimes electric heating. While the new part of the home may look modern and well finished, the electrical system supplying it is often still relying on older wiring and an existing consumer unit that was never designed for the extra demand.
Common problems we see in Cheshunt include circuits that have been extended beyond their safe capacity, incorrect cable sizes being used to feed new areas, and poor connections hidden behind walls or ceilings. These issues may not cause an immediate failure, but they put constant strain on the system.
Overloaded circuits are one of the biggest risks
One of the most common electrical problems after a home extension is circuit overload. Many older homes in Cheshunt were wired decades ago, long before modern kitchens, large televisions, electric ovens and multiple charging points became standard.
When an extension is added, electricians or builders sometimes tap into existing circuits instead of installing new dedicated ones. This can lead to frequent tripping, warm sockets, flickering lights or unexplained power cuts. Over time, overloaded cables can overheat, increasing the risk of electrical fires.
Consumer units are often not upgraded
Another issue we frequently encounter is an outdated consumer unit that has not been upgraded to cope with the new electrical layout. Older fuse boards may not include modern safety features such as RCD or RCBO protection, which are designed to disconnect the power quickly if a fault occurs.
After an extension, the lack of modern protection becomes more dangerous because there are simply more circuits and appliances relying on that single point of control. For homeowners in Cheshunt, this means a fault in one area can affect the safety of the entire property.
Poor workmanship hidden behind new finishes
Extensions are often completed on tight budgets and timelines. Unfortunately, this sometimes results in rushed electrical work that is hidden behind plasterboard, flooring and cabinetry. Junction boxes buried in walls, loose connections and poorly routed cables are all things our electricians regularly uncover during inspections.
These issues rarely show symptoms straight away. Instead, they gradually worsen due to heat, vibration and everyday use. By the time a homeowner notices a smell, buzzing sound or repeated tripping, the fault has often been present for years.
Earthing and bonding is commonly overlooked
Correct earthing and bonding is essential for electrical safety, especially in kitchens, bathrooms and utility rooms often added during extensions. We frequently find that new metal sinks, appliances or pipework have not been correctly bonded to the electrical system.
In Cheshunt homes, this creates a hidden shock risk. If a fault develops and the earthing is inadequate, exposed metal parts can become live without any obvious warning signs.
How an electrical inspection can protect your home
If you have had a home extension in Cheshunt, or are planning one, an Electrical Installation Condition Report can identify problems before they become dangerous. An EICR allows a qualified electrician to assess the condition of your wiring, consumer unit, earthing and overall system capacity.
At JJB Electrical, our inspections focus on how well the electrical system supports the extension as well as the original part of the home. We look for overloaded circuits, outdated protection, poor connections and anything that could compromise safety or reliability.
Why Cheshunt homeowners trust JJB Electrical
We work with homeowners across Cheshunt who want peace of mind after building work. Our electricians are fully qualified, NAPIT registered and experienced in assessing both older wiring systems and modern extensions. We explain everything clearly, avoid unnecessary work and always prioritise safety and long term reliability.
Electrical issues after an extension are rarely caused by one single fault. They are usually the result of small compromises made during the build that add up over time. Addressing them properly protects your home, your family and your investment.
Book an electrical check today
If your home in Cheshunt has been extended and you are experiencing electrical issues, or you simply want reassurance that everything is safe, we are here to help.
Call 01992 276087 to book a professional electrical inspection or to discuss upgrading your electrical system. JJB Electrical provides trusted, high quality electrical services for homes throughout Cheshunt.
