Guides & info

Guides and info on electrical compliance

Every guide and helpful article eCertify has written, in one place: what the certificates are, what an inspection costs, and how to tell whether your house actually needs work. Written by registered inspectors, in plain English. New guides land here first.

An eCertify electrician holding a test instrument

What does an electrical inspection cost?

Every eCertify inspection and certificate price in one table, including GST, with what is and is not included.

An eCertify inspector filling in an electrical certificate by hand

Which electrical certificate do I need?

ESC, COC, ROI or CoV. What each one covers, who issues it, and when the law requires it.

A clamp meter reading taken on a switchboard during an eCertify electrical safety check

Does this job need an inspection?

High-risk electrical work and mains work in NZ, for electricians: what counts, and when an independent inspector is required.

An eCertify Certificate of Compliance on a clipboard

ESC, COC, ROI, CoV: the plain-English version

A scenario-by-scenario checklist for picking the right certificate when an insurer, bank or council asks for one.

An eCertify electrician testing a wall outlet during an electrical safety check

Is my house electrically safe?

The signs worth taking seriously, what an inspector actually tests, and what old wiring looks like.

An eCertify inspector at the outdoor meter box of an Auckland house

Buying or selling a house

A building report does not test the wiring. What a pre-purchase or pre-sale electrical inspection tells you before settlement.

An eCertify electrician inspecting an open switchboard at an Auckland home

Do I need a new switchboard?

Told you need an upgrade? How to tell whether the board actually needs replacing, from an inspector's point of view.

Old tangled wiring being tested with a clamp meter by eCertify

Does my house need rewiring?

Most Auckland homes eCertify inspects do not need a rewire. The signs that genuinely point that way, and how an inspection settles it.

A socket tester showing a reading at a power outlet during an eCertify safety check

Electrical WOF for caravans and transportables

What an electrical warrant of fitness is, who needs one, what it costs, and the cheaper bring-it-in option.

An eCertify electrician arriving at a property for a pre-purchase inspection

Ask The Guru

A New Zealand electrical regulations question, answered with the governing clause explained in plain language. Free.