Who is responsible for COC

[Dave A]

Essentially in terms of legislation both the user and owner are responsible (some fine print applies).

A COC may be deemed valid for as long as there is no change to the electrical installation and for a maximum of 2 years.

If the lease agreement is silent on who is responsible for electrical COC's - just who is going to have to foot the bill for a new one now is going to be very situation dependant.