The short answer
Being Chartered does not, by itself, give an engineer the right to certify drawings. Chartered status (CPEng) is a competency credential awarded by Engineers Australia. The right to certify or sign off often depends on a statutory registration and the specific certification regime in your state, not on Chartered status alone.
Credential versus authority
Think of it as two separate things. CPEng says an engineer has demonstrated a level of competence. Statutory registration, and the certification rules of your jurisdiction, say who is legally allowed to certify a given piece of work. The two are related, CPEng is often a pathway to registration, but they are not the same.
The Queensland example
In Queensland, work that requires sign-off generally needs a Registered Professional Engineer of Queensland (RPEQ). CPEng is one recognised pathway toward RPEQ, but it is RPEQ registration, in the relevant area of engineering, that lets the engineer certify. A Chartered engineer who is not RPEQ-registered cannot provide that certification in Queensland.
Why it matters when you choose
Match the credential to what your approval actually requires. If your project needs a certificate that only a registered engineer can issue, confirm the engineer holds that registration, in the right field, and that it is current. CPEng alone may not be enough.
How to check
Ask which certification your approval needs, then confirm the engineer holds the matching registration. Public registers, the BPEQ RPEQ Directory in Queensland and the National Engineering Register nationally, let you verify it. Requirements vary by state, so confirm for your jurisdiction.
This is general information, not legal advice. Confirm the requirements for your project and location.
If you need an engineer who can certify your project, describe it and Edelvor will match you with one who holds the right registration.