Electrical Installation Certificates Explained: What You Get After Every Job

Every piece of certified electrical work in Scotland produces specific documentation. The format depends on the type of work, but the underlying purpose is the same: to record what was done, confirm it meets BS 7671, and provide the homeowner with a document that supports compliance, sale, insurance, and any future inspection. Most homeowners encounter these documents only when work is completed, and the names and abbreviations can be confusing. This guide explains what each document is, when you receive it, what it tells you, and how to use it.

The three main documents

For Scottish electrical work, three documents cover the vast majority of situations:

• Electrical Installation Certificate (EIC): issued for new installations, alterations, and major additions.
• Minor Works Certificate (MWC): issued for smaller alterations such as adding a single socket or replacing a switch.
• Electrical Installation Condition Report (EICR): issued for periodic inspection of an existing installation.

Each document is produced under the same overarching framework (BS 7671 and the IET Code of Practice) but covers different categories of work. Understanding the differences helps you know what to expect from any given electrical project.

Electrical Installation Certificate (EIC)

When is it issued?

An EIC is issued for new installations and significant alterations, including:

• A new installation in a new build property.
• A new circuit added to an existing installation.
• A consumer unit replacement.
• A major alteration affecting multiple circuits.
• A full or partial rewire.
• A new EV charger circuit.
• A new electric shower circuit.

What does it contain?

The EIC has three main sections:

• Details of the installation: Property address, client name, type of installation, supply characteristics.
• Design, construction, and inspection details: Names of the persons responsible for the design, construction, and inspection. For most domestic work, the same NICEIC contractor takes all three roles.
• Schedule of inspections and test results: Detailed records of the visual inspection and electrical testing carried out on every circuit affected by the work.

Who needs it and why?

The homeowner receives the EIC at completion. The certificate is the formal record that the work was done to BS 7671. It is needed for:

• Building Standards self certification through the competent person scheme.
• Sale of the property (buyers’ solicitors typically request electrical documentation).
• Insurance compliance.
• Any future EICR (the EIC documents what the previous installer did).
• Manufacturer warranty claims (some warranties require evidence of certified installation).

Minor Works Certificate (MWC)

When is it issued?

An MWC is issued for smaller alterations that do not warrant a full EIC. Typical scenarios:

• Adding a single socket or switch.
• Replacing a damaged accessory.
• Adding a small spur to an existing ring main.
• Replacing a light fitting.
• Adding a small item of fixed equipment to an existing circuit.

What does it contain?

The MWC is a single page document covering:

• Details of the work carried out.
• Confirmation that the existing circuit was tested before and after the alteration.
• Test results for the affected circuit.
• Confirmation that the work meets BS 7671.
• The contractor’s signature and certification details.

Who needs it and why?

The homeowner receives the MWC at completion. It serves the same purposes as the EIC but for smaller scope work. Both documents are stored together in the property file.

Electrical Installation Condition Report (EICR)

When is it issued?

An EICR is issued after a periodic inspection of an existing installation rather than after new work. Triggers include:

• 5 yearly cycle for Scottish private rentals (legal requirement).
• 10 yearly recommendation for owner occupied homes.
• Pre purchase or pre sale inspection.
• Change of use or change of tenancy.
• After significant electrical issues (frequent trips, scorching, accessory failures).
• Insurance or lender request.

What does it contain?

The EICR is the most detailed of the three documents:

• Details of the property and inspection.
• Summary verdict: satisfactory or unsatisfactory.
• List of observations with codes (C1, C2, C3, FI).
• Recommendations for any required remedial work.
• Schedule of inspection (every item checked).
• Schedule of test results (every circuit tested).
• Declaration signed by the inspector.

Who needs it and why?

For Scottish private rentals, the EICR is mandatory under the Repairing Standard. For other properties, it is the standard evidence of installation safety. For more on the EICR specifically, see our pillar guide on EICR services in Aberdeen.

Comparison of the three documents

Aspect	EIC	MWC	EICR
Purpose	New work or major alteration	Small alteration	Periodic inspection
Triggered by	Installation work	Small installation work	5 year cycle, change of tenancy
Content	Schedules of inspection and test for new work	Single page summary	Full inspection report with codes
Codes	N/A (work meets standard or it does not)	N/A	C1, C2, C3, FI
Validity	Permanent record of work done	Permanent record	5 years for private rentals
Building Standards notification	Yes	Yes for notifiable work	No (not new work)

What if I do not receive the right document?

If electrical work is completed and you do not receive the appropriate certificate, the work is not properly documented. The consequences:

• Building Standards non compliance: The work has not been formally notified.
• Insurance issues: Claims involving the work may be declined.
• Sale problems: Buyers’ solicitors will likely flag the missing documentation.
• Future EICR issues: The next inspector cannot reference what was done.
• Warranty problems: Manufacturer warranties may require evidence of certified installation.

Always insist on receiving the appropriate certificate at completion. A trustworthy contractor produces the document as a standard part of the job. If a contractor is reluctant to provide certification, that is itself a sign to consider before proceeding with the work.

How long should I keep these documents?

Permanently. The EIC, MWC, and EICR documents form the property’s electrical history and are useful for:

• Future EICRs (the next inspector references the prior work).
• Property sales (buyers and solicitors want the full electrical history).
• Insurance claims (documentation supports any claim involving electrical work).
• Warranty claims (manufacturer cover often depends on evidence of certified installation).
• Major alterations (designers and contractors reference the existing installation history).

A simple folder or digital archive works well. Photograph each document at completion as a backup. Pass the documentation to the next owner if you sell the property.

Other certificates you may encounter

For specialist work, additional documentation applies:

• MCS Installation Certificate: for solar PV and battery storage installations under the Microgeneration Certification Scheme. Required for Smart Export Guarantee registration.
• OZEV documentation: for EV charger installations under the Office for Zero Emission Vehicles grant scheme. Required for the OZEV grant claim.
• Building Warrant approval: for major works that require Council approval beyond what the competent person scheme covers.
• Specialist commissioning certificates: for fire detection, alarm, and access control systems.

Faithful Spark provides all relevant certification at completion of every project. The documentation is part of the standard scope, not an optional extra.

Frequently asked questions

How long after the work should I receive the certificate?

For most projects, the certificate is issued at completion or within 1 to 3 working days afterward. The notification to the competent person scheme typically follows within 7 to 30 days depending on the scheme’s processes. Faithful Spark sends the documentation by email at completion and confirms competent person registration once it is logged.

Can I get a copy if I lose the original?

Yes. The contractor and the certification body both retain copies. Contact your original contractor first; if they are no longer trading, contact the certification body (NICEIC or SELECT) for an archive copy.

Is a digital PDF acceptable?

Yes. Most certification is now issued and stored digitally. Digital PDFs are accepted by Aberdeenshire Council, the First Tier Tribunal, lenders, insurers, and conveyancing solicitors. Keep a digital copy and a printed copy for redundancy.

My EICR is satisfactory but mentions “limitations”. What does that mean?

Limitations note any parts of the installation that were not fully accessible or fully tested due to physical access constraints (concealed circuits, fixed furniture, locked rooms). The limitations are noted on the certificate and the EICR remains valid for the parts inspected. For older or complex properties, some limitations are common.

What if my EIC was issued by a contractor who is no longer NICEIC certified?

The EIC documents the work that was done at the time. If the contractor was certified at the time, the certificate remains valid. The contractor’s current status does not retrospectively invalidate older work. If you need a fresh inspection of the work, a current NICEIC contractor can provide an EICR that documents the current condition.

Book a NICEIC certified electrician

Faithful Spark provides NICEIC certified electrical work across Aberdeen, Aberdeenshire, Peterhead, Ellon, and Fraserburgh. Every project produces the appropriate certificate at completion: EIC for new installations, MWC for smaller alterations, EICR for inspections, and any specialist certification for solar PV or EV charger work. See our companion guides on EICR services in Aberdeen and why NICEIC approval matters.

Contact Faithful Spark

Faithful Spark Electricians. NICEIC approved. Local Aberdeen team. Full electrical services with certified documentation for Aberdeen, Peterhead, Ellon, Fraserburgh and across Aberdeenshire.