An "Unsatisfactory" mark on your electrical certificate isn’t a penalty; it’s a proactive shield against the fire risks and £30,000 fines that can catch London landlords off guard in 2026. Knowing exactly what fails an eicr report is the first step to maintaining a safe property and avoiding the stress of last-minute repairs. We understand that the 28-day legal deadline for remedial works often brings more anxiety than the inspection itself, especially when you’re worried about being overcharged for unnecessary work.

This guide promises to strip away the confusing jargon around RCDs and earthing to give you total clarity. We will preview the most common faults found in London homes and explain the difference between a critical danger and a minor recommendation. You’ll finish with a clear plan to navigate compliance whilst ensuring your property remains a safe, welcoming environment for your tenants.

Common Faults That Result in an Unsatisfactory EICR Report

Understanding what fails an eicr report starts with the consumer unit. The most common culprit is a lack of RCD (Residual Current Device) protection. These devices are lifesavers that disconnect power in milliseconds if they detect a fault, yet many older London boards lack them entirely. Without RCDs, your property won’t meet modern UK wiring safety standards, leading to an immediate ‘Unsatisfactory’ result.

Inadequate earth bonding is another frequent fail point. If your gas and water pipes aren’t correctly earthed, they could become live during a fault, creating a massive shock risk. We also frequently find damaged or exposed wiring caused by dangerous DIY repairs amongst previous tenants. Exposed copper or loose connections are high-risk hazards that always result in a fail status.

Bathrooms are high-risk zones where we often find incorrect light fittings. Using non-IP rated lights near a shower or bath is a major safety breach. These fittings aren’t designed to handle moisture or splashes, making them a primary reason for a failed report when we’re identifying what fails an eicr report for local landlords.

Why Older London Properties Are at Higher Risk of Failing

London’s unique landscape of Victorian and Edwardian conversions presents specific challenges. Many properties still rely on outdated ‘fuse wire’ boards that simply can’t handle the load of modern appliances. We also occasionally encounter perished rubber cabling (VIR) in un-refurbished flats, which becomes brittle and dangerous over time. All London homes must now adhere to BS 7671, which is the UK national standard for electrical installations.

Decoding EICR Results: C1, C2, and C3 Classifications

Your EICR report uses a standardised coding system to signal the severity of any electrical issues found. Understanding what fails an eicr report helps you plan your maintenance schedule more effectively and protects your investment. A C1 (Danger Present) code is the most critical. It indicates an immediate risk of injury, such as live wires being exposed. In these cases, our electricians will often need to isolate the circuit on-site to keep the building safe. A C2 (Potentially Dangerous) code is also a fail. It requires urgent remedial work within 28 days to maintain legal compliance.

Conversely, a C3 (Improvement Recommended) code is not a fail. It’s a suggestion to bring the property up to modern safety standards, like adding extra sockets to prevent the use of extension leads. Finally, an FI (Further Investigation) code is used if a circuit cannot be fully tested due to restricted access. This also results in an unsatisfactory report until the investigation is complete. Deciphering these codes is essential for any London landlord aiming for total peace of mind.

Which Codes Actually Fail Your EICR Report?

When asking what fails an eicr report, remember that only C1, C2, and FI codes trigger an overall ‘Unsatisfactory’ status. Following the government guidance for landlords is vital to avoid local council fines of up to £30,000. Prioritising C2 repairs ensures your London property stays on the right side of the law and keeps your tenants safe. For a deeper dive, check out our EICR Certificate: The Complete Landlord Guide to Electrical Safety in 2026. If you’ve received a report with these codes, our team can provide transparent advice on the next steps.

Managing Remedial Works and Achieving Compliance in London

Once you’ve identified what fails an eicr report, the clock starts ticking. Under the Electrical Safety Standards Regulations 2020, London landlords have a strict 28-day window to complete C1 and C2 remedial works. Missing this deadline can lead to local authority fines of up to £30,000. Failing doesn’t automatically mean you need a full rewire, though. Often, a targeted consumer unit upgrade can resolve several C2 faults simultaneously, saving you time and money whilst modernising your property’s safety.

Proving compliance is just as vital as the repairs themselves. Instead of paying for a completely new EICR, you can often use a ‘Minor Works Certificate’ or an ‘Electrical Installation Certificate’ to demonstrate that specific faults were rectified. This keeps your documentation in order without unnecessary expense. Many landlords find that using a one-stop shop like CFS group simplifies the entire process, as we can manage both your EICR and your Gas Safety Certificate London in a single, coordinated visit.

How to Choose a Trusted London Electrician for Repairs

Always verify that your chosen electrician is NICEIC or NAPIT registered. This ensures that the local authority will accept your certification as valid. To avoid the hidden costs often found in London property maintenance, look for providers who offer fixed-price remedial quotes. At , we bring 15 years of experience to every project, offering transparent, reliable trade services across the capital. We pride ourselves on being a dedicated partner that removes the stress of compliance for busy landlords.

Securing Your London Property with Confidence

Navigating the complexities of electrical safety doesn’t have to be a source of stress. Identifying what fails an eicr report and understanding the critical differences between C1 and C2 codes is the first step towards total compliance. You must act within the 28-day legal window. This avoids heavy fines and ensures your tenants remain safe in their homes. Our NICEIC registered electricians bring 15 years of London property expertise to every inspection, providing fixed-price safety certifications with transparent reporting.

We’re here to act as your dedicated partner, handling everything from initial testing to seamless remedial works. Book your professional EICR and remedial assessment with CFS Group Limited  today to gain complete peace of mind. Keeping your property safe and compliant is a straightforward process whilst you have the right experts by your side.

Frequently Asked Questions

Is a C3 code an automatic fail on an EICR report in 2026?

No, a C3 code is not an automatic fail. It signifies an ‘Improvement Recommended’ status, meaning your installation is safe but doesn’t meet the very latest standards. When considering what fails an eicr report, only C1, C2, and FI codes result in an overall ‘Unsatisfactory’ mark. You aren’t legally required to act on C3 recommendations, although they often improve long-term safety.

How long do I have to fix electrical faults after an unsatisfactory EICR?

You have a maximum of 28 days to complete any necessary remedial works following an ‘Unsatisfactory’ report. If the inspector identifies a C1 ‘Danger Present’ code, they may need to isolate the circuit immediately for safety. Prompt action ensures you remain compliant with the law and avoids potential fines of up to £30,000 from your local London council.

Can my tenant refuse entry for an EICR inspection if I think it will fail?

Tenants can technically refuse entry, but they are usually in breach of their tenancy agreement by doing so. Landlords have a legal duty to ensure electrical safety, and you must provide at least 24 hours’ written notice before an inspection. If a tenant refuses, keep a detailed record of your communication to prove you’ve taken all reasonable steps to comply.

Do I need a completely new EICR after the remedial works are finished?

No, you don’t usually need a completely new EICR report once the faults are fixed. Instead, your electrician will issue a Minor Works Certificate or an Electrical Installation Certificate to prove the remedial work was completed. You should keep these documents alongside your original ‘Unsatisfactory’ report to demonstrate full compliance to local authorities or future tenants during your next inspection cycle.