What Is An Electrical Safety Check? EICR Explained In The UK

An electrical safety check is one of those terms that gets thrown around a lot, by landlords, letting agents, electricians, and property buyers, but rarely gets a proper explanation. In most cases, it refers to an Electrical Installation Condition Report (EICR), which is a formal inspection of a property's fixed wiring and electrical systems carried out by a qualified electrician.

Whether you're a homeowner wondering if your electrics are safe, a landlord trying to meet your legal obligations, or a tenant who's been told one is due, understanding what this process actually involves matters. It affects your safety, your compliance, and potentially your insurance cover.

At Electrical Testing London, we carry out EICRs across London, Greater London, and the South East every day for domestic and commercial clients. This article breaks down exactly what an electrical safety check is, what happens during the inspection, who needs one, how often it's required, and what the results mean for you and your property.

Why electrical safety checks matter

Electricity is involved in roughly half of all accidental house fires in the UK, and a large proportion of those fires trace back to faults in fixed wiring or overloaded circuits rather than visible appliances. That's the core reason why understanding what is an electrical safety check matters, not just as a legal formality, but as a practical step toward keeping a building and the people inside it safe.

The risks of ignoring electrical faults

Electrical faults don't announce themselves. Deteriorating insulation, loose connections, and overloaded circuits can sit inside walls and consumer units for years without tripping a breaker or producing any visible sign of trouble. By the time a fault becomes obvious, perhaps through flickering lights, burning smells, or a tripped circuit, the underlying issue may already be serious.

An electrical fault that goes undetected for years can cause a fire or an electrocution in seconds.

Older properties carry particularly elevated levels of risk. Wiring installed decades ago was designed to handle far lighter electrical loads than modern households place on a system. Additions made without proper certification, or circuits extended by unqualified workers, compound that risk further. A regular check identifies these problems before they escalate into something far more difficult and expensive to deal with.

Why landlords face legal exposure without one

If you're a landlord renting out a property in England, you have a legal duty under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 to have the electrical installation inspected and tested at least every five years. Failure to comply can result in fines of up to £30,000, and your local authority has the power to arrange remedial work and recover those costs from you directly.

Beyond the financial penalty, the liability picture is significant. If a tenant is injured or a fire occurs as a result of a fault you could have identified through routine inspection, the consequences extend well beyond a fine. Landlords who cannot produce a valid EICR also risk finding that their buildings insurance is void at the point of a claim, leaving them fully exposed.

Why homeowners shouldn't assume their electrics are fine

There's a common assumption among homeowners that if nothing is visibly wrong, the electrics are fine. That's not how electrical systems age. Rubber-insulated wiring, common in properties built before the 1970s, becomes brittle over time and can crack, exposing live conductors inside cavities where nobody looks.

Even in newer properties, DIY electrical work or uncertified alterations carried out by previous owners can leave hidden problems throughout the installation. A formal electrical safety check gives you documented evidence that your system is safe, and where it isn't, it tells you exactly what needs attention before it becomes a costly or dangerous problem.

What gets checked in an electrical safety check

When people ask what is an electrical safety check, they often picture someone flicking a few light switches. The reality is considerably more thorough. A qualified electrician works through every accessible part of the fixed electrical installation, from the point where the supply enters the building through to the sockets, switches, and light fittings in each room.

The fixed wiring and consumer unit

The consumer unit (commonly called the fuse box) is one of the most important areas of the inspection. The electrician checks whether it meets current standards, whether the correct circuit breakers and RCD protection are in place, and whether the unit itself is in serviceable condition. They also inspect the main supply cables feeding the consumer unit, looking for signs of deterioration, damage, or inadequate installation.

From the consumer unit outward, each individual circuit is tested separately. This includes ring final circuits (which supply your sockets), radial circuits, lighting circuits, and any dedicated circuits for appliances such as electric showers or cookers.

Circuits added by previous owners without proper certification are among the most commonly flagged issues during an EICR inspection.

Earthing, bonding, and protective devices

Earthing and bonding are the safety systems designed to protect you from electric shock if a fault develops anywhere in the installation. The electrician confirms that the earthing arrangement is correct and that main protective bonding conductors connect properly to gas and water pipework where required.

Protective devices such as RCDs (residual current devices) are tested to confirm they trip within the time limits set by current standards when a fault is detected. These devices serve as a critical last line of defence against electrocution. A device that fails its trip time test is a serious safety issue that must be resolved before the inspection concludes.

How an EICR works from start to finish

Understanding what is an electrical safety check also means knowing what to expect on the day itself. The process follows a structured sequence from the moment the electrician arrives to the point where every stage of testing is complete, and knowing what happens helps you prepare your property and avoids unnecessary delays.

Before the inspection begins

The electrician will ask you for access to every room in the property and to the consumer unit. You don't need to do anything technical to prepare, but clearing the area around the fuse box and making sure all rooms are accessible speeds things up considerably. If you've had any previous electrical work carried out, sharing existing certificates or reports gives the inspector useful context from the outset.

During the inspection

Your inspector works through the installation circuit by circuit, carrying out both visual checks and live electrical tests. Some tests require the power to specific circuits to be switched off temporarily, so you should expect brief supply interruptions in different parts of the property at various points during the inspection. The electrician records the result of each test against the values required by current regulations as they go.

Most domestic EICR inspections take between two and four hours, depending on the size and age of the property.

Properties with uncertified additions or older wiring typically take longer to inspect. The electrician logs every observation during the process, including anything that deviates from current standards or presents an immediate safety concern.

After the testing is complete

Once testing is finished, the electrician compiles the findings into the formal EICR document. Items that failed testing or require further investigation are assigned a classification code that reflects how serious the issue is. You receive this report as a written record of the condition of your electrical installation, and that document determines what happens next.

What the EICR report means and what to do next

Once you receive your EICR, you'll see that every observation has been assigned a classification code and the report carries an overall outcome of either Satisfactory or Unsatisfactory. Understanding what those codes mean is the practical core of knowing what is an electrical safety check, because the report tells you not just whether there's a problem but how urgently it needs addressing.

Understanding the classification codes

The codes follow a standardised system set out in BS 7671, the UK wiring regulations that govern all electrical installations. The four codes you'll encounter are C1, C2, C3, and FI, and each carries a different level of urgency.

A report that contains a C1 or C2 observation, or an FI code, is classed as Unsatisfactory. A C3 code on its own does not make a report Unsatisfactory, but it still represents a genuine shortcoming worth addressing when the opportunity arises.

If your report is classed as Unsatisfactory, remedial work must be completed and a signed completion certificate issued before your installation can be considered compliant.

What happens if your report is unsatisfactory

Receiving an Unsatisfactory result does not mean your property is immediately unusable, but it does mean specific remedial work is required within a defined timeframe. For landlords in England, the regulations require that C1 and C2 faults are rectified within 28 days of the inspection, or sooner if the report specifies it.

Once the remedial work is completed by a qualified electrician, they issue a signed completion certificate. You then send a copy of both the EICR and the completion certificate to your tenants and, if requested, your local authority.

How often you need a check and UK legal duties

One of the most practical answers to the question of what is an electrical safety check comes down to frequency and legal obligation. The rules differ depending on whether you own the property, rent it out, or operate it as a business, so knowing which category applies to you determines how often you need to act.

Landlords in England: your legal obligations

Under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020, landlords must have an EICR carried out at least every five years on all rented properties. You must provide a copy of the current valid EICR to each tenant within 28 days of them moving in, and to any prospective tenant within 28 days of a written request.

Landlords who fail to comply face fines of up to £30,000 per property, and local councils can arrange remedial work and recover those costs directly from you.

Where an existing EICR specifies a shorter inspection interval, that shorter period overrides the five-year default. You must also complete any remedial work identified within 28 days of the inspection, or within the timeframe stated in the report if that is sooner.

Homeowners and commercial properties

Homeowners face no legal obligation to obtain an EICR, but most electrical engineers and insurers recommend one every ten years, or when you buy a property, carry out significant renovations, or move into an older building. If your property was built before the 1970s, an earlier inspection interval makes practical sense given the age and likely condition of the wiring.

Commercial properties carry their own duties under health and safety legislation, and employers must ensure their electrical installations are maintained in a safe condition. In practice, most commercial EICRs are carried out every three to five years, with the specific interval depending on the type of premises and the level of electrical demand placed on the installation.

Next steps

Now that you know what is an electrical safety check, the next move is straightforward: find out whether your property is due one and book it with a qualified, experienced electrician. If you're a landlord, check the date on your current EICR. If it's within the next 12 months of expiry, arranging the inspection early gives you time to deal with any remedial work without rushing to meet your legal deadline.

Homeowners who haven't had an inspection in the last ten years, or who have moved into an older property, should treat this as a priority rather than something to revisit later. Electrical faults don't wait, and the cost of an inspection is a fraction of what a serious fault can cost you to put right. If you're ready to arrange an inspection or want a clear quote upfront, get in touch with our team and we'll take it from there.