A simple guide to the details that make a Minor Works certificate complete, clear, and easy for the client to understand.
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Written and reviewed by Andrew Moore, founder of Elec-Mate, against BS 7671:2018+A4:2026, IET Guidance Note 3 and the IET On-Site Guide.
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A good Minor Works certificate should clearly say what was changed, added, repaired, or altered. The client should be able to read it later and understand the scope without calling you back for clarification.
That means the certificate should not just list a vague job title. It should name the circuit or area, explain the work completed, and show enough detail for the record to stand on its own.
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If the work was electrical, the certificate should include the test results that prove the work is safe and complete for its scope. The exact tests will vary by job, but the point is the same: the certificate should show the evidence, not just the conclusion.
If you need the wider testing structure as a reference, schedule of test results is a useful companion page.
The certificate should be readable by the client, not just by another electrician. That means plain language, clear notes, and a layout that makes the important points easy to find when the document is opened on a phone.
If the minor work is leading into a bigger job, the handover should point the client in the right direction. For pricing or follow-on work, electrical quoting is the next natural step.
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Not every job stays minor for long. If the work expands into deeper testing, a fuller inspection, or a larger remedial package, the paperwork should change with it. That keeps the record accurate and avoids forcing one small certificate to cover a bigger scope than it should.
A Minor Works Certificate covers a single circuit change — not a new installation, not a rewire. The form is short on purpose, but every field on it matters. The mistake people make is treating the MWC as a quick-fire receipt rather than a legal record. Skip the wrong field and the certificate stops being defensible.
The three fields that matter most are the description of work, the test results, and the declaration of compliance with BS 7671. Each one anchors a different part of the legal record. The description proves scope. The test results prove safety. The declaration proves competence. If any of the three is vague, the certificate weakens.
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