EICR When Selling: Do You Need an Electrical Inspection?

Electrical safety is a growing concern in UK property transactions. While an Electrical Installation Condition Report is not a legal requirement for owner-occupier sales, it is increasingly expected by buyers, recommended by property surveyors, and valued by mortgage lenders. Understanding what an EICR involves — and what the results mean — helps you make informed decisions about whether to get one before selling.

This guide covers everything sellers need to know about EICRs, from what the electrician tests to how the coding system works, and how electrical findings typically affect the sales process in England and Wales.

What is an EICR?

An Electrical Installation Condition Report (sometimes referred to informally as a "CP12" for electrics, though that term properly refers to gas safety certificates) is a formal inspection and test of the fixed electrical installation in a property. It is carried out by a qualified and registered electrician to the standard set out in BS 7671, the IET Wiring Regulations.

The EICR assesses the condition of the electrical installation and identifies any defects, damage, deterioration, or non-compliance with current standards. The result is either "satisfactory" (no dangerous defects found) or "unsatisfactory" (one or more dangerous or potentially dangerous defects identified).

It is important to understand that an EICR assesses the fixed installation only — the wiring, consumer unit, sockets, switches, and fixed equipment. It does not cover portable appliances, and it is distinct from the electrical certificates issued when new work is carried out.

Do you need an EICR to sell your house?

The legal position

There is no legal requirement for owner-occupiers to obtain an EICR when selling their property. The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 require landlords to have a valid EICR before letting, and to renew it every five years — but this does not apply to owner-occupier sales.

Why sellers get one anyway

Despite the lack of legal obligation, there are compelling reasons to consider getting an EICR before marketing your property.

• Pre-empting buyer survey concerns — if the buyer's surveyor notes old electrics, a visible old fuse box, or a lack of RCD protection, they will recommend further investigation. Having an EICR ready answers these concerns immediately.
• Avoiding delays — if the buyer requests an EICR after their survey, it can add two to four weeks to the timeline. Having one ready keeps the process moving.
• Supporting the mortgage application — some lenders may require evidence of electrical safety if the valuation surveyor raises concerns. A satisfactory EICR satisfies this requirement.
• Demonstrating maintenance — a satisfactory EICR signals that you have maintained the property responsibly, which builds buyer confidence.

What the EICR inspection covers

An EICR is a thorough process that goes well beyond a visual check. The electrician will inspect and test the following elements.

Consumer unit (fuse board)

The consumer unit is the heart of the electrical installation. The electrician checks the type and age of the unit, whether it has RCD (residual current device) protection, the condition of MCBs (miniature circuit breakers) or fuses, the adequacy of the main earthing and bonding, and whether the unit complies with current regulations for fire enclosure (metal consumer units became mandatory for new installations in 2016).

Wiring

The electrician inspects accessible wiring for damage, deterioration, and signs of overheating. They assess the type and age of the wiring. Rubber-insulated wiring (pre-1960s) is a particular concern as the insulation degrades over time and can become a fire risk. Lead-sheathed wiring, found in some pre-war properties, is also flagged for replacement.

Sockets, switches, and accessories

Every socket, switch, and fixed electrical accessory is inspected for damage, correct wiring, and proper earthing. The electrician checks that sockets are not overloaded and that all accessories are securely fixed.

Earthing and bonding

Adequate earthing and bonding is critical for electrical safety. The electrician checks that the main earth connection is present and effective, that main bonding conductors are connected to gas and water services, and that supplementary bonding is in place where required (such as in bathrooms). Inadequate earthing is one of the most common C2 observations on EICRs.

Circuit testing

The electrician tests each circuit for insulation resistance (to check the condition of cable insulation), earth fault loop impedance (to ensure protective devices will operate quickly enough in a fault), and RCD operation time (to confirm RCDs trip within the required timeframe). These tests require the power to be switched off temporarily.

Understanding EICR codes: C1, C2, C3, and FI

The EICR uses a standardised coding system to classify any observations. Understanding these codes is essential for interpreting your report.

An EICR with any C1 or C2 observations will be classified as "unsatisfactory." C3 observations alone do not make the report unsatisfactory — they indicate areas where the installation could be improved but is not unsafe.

Common C2 observations

The most frequently encountered C2 (Potentially Dangerous) observations include:

• Lack of RCD protection on socket circuits — required by current regulations but absent in many older installations.
• Inadequate main bonding to gas and/or water services.
• Missing or inadequate earthing at the consumer unit.
• Deteriorated cable insulation (particularly rubber-insulated wiring).
• Incorrectly rated circuit protective devices (fuses or MCBs too large for the cable they protect).

Common C3 observations

Typical C3 (Improvement Recommended) observations include:

• Lack of supplementary bonding in bathrooms (no longer required by the 18th Edition if main bonding is adequate, but commonly noted).
• Consumer unit not in a metal enclosure (required for new installations since 2016 but not retrospectively).
• Two-way lighting circuits without an earth conductor (common in older properties).

How old electrics affect buyer surveys

Buyer surveys (Level 2 HomeBuyer Reports and Level 3 Building Surveys) routinely comment on the visible condition of the electrical installation. Surveyors are not electricians, but they will note visible concerns and recommend specialist investigation.

The following issues are commonly flagged by surveyors.

• An old fuse box with rewirable fuses rather than modern MCBs and RCDs — this is the single most commonly flagged electrical item.
• Visible older wiring styles (round-pin sockets, fabric-covered cables, bakelite fittings).
• Lack of RCD protection (indicated by the absence of RCD test buttons on the consumer unit).
• Signs of DIY electrical work (unsightly surface wiring, junction boxes, or non-standard installations).
• Extension or conversion work without evidence of Part P compliance.

When a surveyor recommends further electrical investigation, the buyer will almost certainly request an EICR before proceeding. Having one ready avoids this delay. For more on how electrical issues flagged in surveys affect the sales process, see our dedicated guide.

Consumer unit upgrades: the most common pre-sale improvement

If your property has an old-style fuse box — one with rewirable fuses, no RCD protection, and possibly a wooden or plastic enclosure — upgrading to a modern consumer unit is one of the most cost-effective improvements you can make before selling.

What a modern consumer unit provides

• RCD protection — rapidly disconnects the supply if a fault is detected, significantly reducing the risk of electric shock and fire.
• MCBs — miniature circuit breakers that trip automatically when a circuit is overloaded, replacing unreliable rewirable fuses.
• Metal enclosure — provides fire containment in the event of an internal fault.
• Circuit labelling — clearly identifies each circuit for safety and convenience.

Cost and requirements

A consumer unit upgrade typically costs between £350 and £600, including the unit, installation, and certification. The work must be carried out by a registered electrician (a member of NICEIC, NAPIT, ELECSA, or another competent person scheme) and will be notified to Building Control. You will receive a Building Regulations compliance certificate (Part P) and an Electrical Installation Certificate, which you should keep for your buyer's solicitor.

Part P certificates and selling

Part P of the Building Regulations covers electrical safety in dwellings in England and Wales. Certain types of electrical work are "notifiable" and must either be carried out by a registered competent person (who self-certifies) or notified to Building Control for inspection and sign-off.

Notifiable work includes

• Consumer unit (fuse board) replacement
• New circuits
• Electrical work in bathrooms, kitchens (within a certain distance of sinks), and outdoors
• Additions or alterations to existing circuits in special locations

Why Part P certificates matter for sellers

During conveyancing, the buyer's solicitor will ask whether any electrical work has been carried out and request sight of the Part P certificate. If the certificate is missing, it suggests the work may have been done without proper compliance. Options include applying for retrospective Building Control approval (which involves inspection and may require remedial work), obtaining an EICR to confirm the installation is satisfactory, or arranging indemnity insurance to cover the lack of sign-off.

Rewiring: when it becomes necessary

A full rewire is the most significant electrical upgrade a seller might face. It involves replacing all the wiring in the property with modern cables, installing a new consumer unit, and upgrading sockets, switches, and accessories throughout.

When rewiring is typically needed

• Rubber-insulated wiring (typically pre-1960s) — the insulation degrades over decades and becomes brittle and potentially dangerous.
• Lead-sheathed wiring (pre-war properties) — rare but should be replaced when found.
• Aluminium wiring — used briefly in the 1960s and 1970s, it is less safe than copper and often requires replacement.
• Wiring over 40 years old — while there is no fixed expiry date for wiring, installations over 40 years old are more likely to have deteriorated insulation and inadequate earthing.

Rewiring costs

A rewire is disruptive (it involves lifting floorboards and chasing walls), so sellers should weigh the benefit against the disruption — our guide on whether to fix or reduce the price after a survey can help with that decision. If an EICR confirms the existing wiring is satisfactory, a rewire is not necessary even if the wiring is old. For more on electrical upgrade costs, see our guide to rewire costs before selling.

Choosing an electrician for your EICR

Always use an electrician who is registered with a government-approved competent person scheme. The main schemes are NICEIC, NAPIT, ELECSA, and STROMA. Registration means the electrician is qualified, insured, and regularly assessed. You can verify registration on the scheme's website or through the Electrical Safety Register.

Avoid using an unregistered electrician for an EICR. The report will not carry the same weight with buyers, solicitors, or mortgage lenders, and may not be accepted as evidence of electrical safety. A registered electrician's EICR is a recognised, trusted document that can smooth the path to a successful sale. Outdated electrics are among the most common issues flagged in property surveys, so having a satisfactory EICR is one of the most effective steps you can take.

Frequently asked questions