On a project, one certifying electrician owns the compliance from design to handover, so the Certificates of Compliance line up and nothing falls between subbies. What you get at handover (as-builts, CoC, O&M manuals) and why it makes the certifier sign-off painless.
On a project with several trades, electrical compliance can either run through one accountable person or scatter across subcontractors who each certify their own slice. The first makes handover clean. The second is where gaps hide. This guide explains the single certifying electrician model, what you receive at handover, and why it makes the final sign-off painless. It underpins our project work.
A single certifying electrician holds the compliance of the electrical works across the whole job: the design, the installation, and every Certificate of Compliance that results. They are not necessarily the only person with hands on tools, but they own the compliance picture from start to finish. That ownership means the certificates line up, the design is consistent, and there is one person accountable if a question arises. On a multi-trade site, that single line of accountability is the difference between a clean project and a paper chase.
When each subcontractor certifies only their own part, the risk lives at the boundaries. One subbie assumes another connected and certified a circuit; the other assumed the same in reverse; the connection sits uncertified between them. Nobody is lying and nobody is clearly at fault, which is exactly why these gaps survive until an inspection finds them. A single certifier removes the boundary problem by owning every certificate, so there is no seam for compliance to fall through.
We put one certifying electrician on the project so every Certificate of Compliance rolls up to one owner. The cheap arrangement lets responsibility scatter and the gaps appear at the seams.
A project run this way ends with a complete, consistent pack rather than a folder of mismatched documents. The handover should include:
Make the pack a condition of final payment so it arrives complete rather than trickling in afterward.
The building certifier's job is to confirm the work complies. When one electrician has owned the electrical compliance throughout, the certifier receives a clean, complete and consistent set of documents with nothing missing and nothing contradictory. There is no chasing a subbie who has left site, no reconciling two certificates that disagree. The sign-off becomes a review rather than an investigation. The same documentary discipline that makes a quote honest, showing the load calc, the cable sizing and the compliance paperwork before you sign, is what makes a project certifiable at the end. For how to spot the opposite on a quote, read how to spot a cheap energy quote.
On any project worth certifying, ask one question first: who is the single certifying electrician? If the answer is "each trade does their own", you have found where the compliance gaps will be. If the answer is a name, you have found who will make your handover clean.