Electrical work carries a compliance trail that plumbing and general trades mostly do not, and your invoice should reflect it. The certificate you issue is not an administrative afterthought — it is the document that proves the work was done to standard, and referencing it on the invoice ties the payment to the compliance record.
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Key takeaways
| Section | Example line | Note |
|---|---|---|
| Registration | Registered electrician no. 4471288 | Header, not a charge — justifies your rate |
| Job reference | Property address + job/quote number | Essential for landlords with multiple properties |
| Labour | Labour — 6.0 hrs @ $92/hr — $552 | Show hours |
| Second operative | Apprentice — 6.0 hrs @ $38/hr — $228 | Bill separately, at the correct rate |
| Materials | Each item named, qty, unit price | Cable, accessories, protective devices |
| Testing & inspection | Circuit testing and certification — 1.5 hrs — $138 | Billable labour, frequently given away |
| Certification | EICR / installation certificate no. EIC-2026-0912 | Reference the document number |
| Notification fee | Building control notification — at cost — $45 | Pass-through |
| Warranty | 12 months workmanship; parts per manufacturer | Text line |
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Two practical reasons. First, when a property is sold or let, the owner will be asked for electrical certificates, and an invoice that names the certificate number makes it findable years later — which generates repeat calls to you.
Second, if a fault or claim arises, an invoice that ties a specific certificate to a specific date and scope of work is a considerably stronger position than an invoice that says “electrical works — $1,100.”
A large share of electrical work is periodic inspection for landlords and letting agents. Two things to build into your invoicing:
Agencies will be slower payers than domestic customers. Net 30 is realistic; chase politely and systematically using reminder email templates.
Disclose the out-of-hours rate on the phone before you attend, and restate it on the invoice. As with plumbing work, an undisclosed surcharge is the fastest route to a disputed bill and a bad review.
Yes. It links the payment to the compliance record, helps the customer find the certificate years later, and strengthens your position if the work is ever questioned.
Yes, and you should. Testing is skilled, time-consuming labour requiring calibrated instruments. Bundling it into a general labour figure hides value you have delivered.
Requirements vary by jurisdiction, but it is good practice everywhere. It signals you are a competent registered person and quietly justifies a higher rate than an unregistered competitor.
Invoice labour only, and add a line noting materials were customer-supplied — plus a short statement that your warranty covers workmanship only, not the supplied parts. That distinction matters if a customer-bought accessory fails.
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