No. In every Australian state and territory, plumbing, gasfitting and electrical work must be carried out by a licensed tradesperson — being an owner-builder does not exempt you from licensed-trade requirements.
The rule is the same everywhere
An owner-builder permit lets you coordinate and manage your build — it does not license you to do work the law reserves for licensed trades. Across Australia, that reserved list always includes:
- Electrical work — a licensed electrician, who issues a certificate of electrical safety / compliance.
- Plumbing, drainage and gasfitting — a licensed plumber/gasfitter, who issues the compliance certificate.
This holds regardless of your skills or your permit. The compliance certificates these trades issue are also part of your build record and your handover pack.
What you can do yourself
The line varies by state and by your own competence, but owner-builders commonly handle non-licensed work — labouring, some carpentry, painting, landscaping — while engaging licensed trades for the rest. Some structural and waterproofing work must also be done or certified by registered practitioners depending on the state.
Why it’s not worth the shortcut
Unlicensed plumbing or electrical work voids insurance, fails at certification, and creates a liability that follows the house to the next owner. The certificates exist to prove the work is safe and compliant — there’s no owner-builder exemption, and no upside to pretending there is. Your state’s permit guide sets out exactly which trades are reserved where.