First Home Buyer Granny Flat Australia 2026 — Grants, Duty Concessions & Rental Income

General information only — not financial advice. This content is intended as educational guidance. Consult a qualified financial adviser, mortgage broker, or legal professional before making financial decisions. See our full disclaimer.

Buying a property with a granny flat as a first home buyer combines FHB stamp duty concessions with rental income. The granny flat income improves borrowing power and can significantly offset mortgage repayments.

Frequently Asked Questions

Can a first home buyer get the stamp duty exemption on a property with a granny flat?

Yes, in most states — the FHB stamp duty exemption applies to the whole property as long as you intend to live in the main dwelling as your principal place of residence. Having a granny flat on the property does not disqualify you, but some states set price thresholds that may exclude larger granny flat properties.

Can I include granny flat rental income in my home loan application?

Most lenders will include prospective granny flat income at 70–80% if there is an existing tenancy. For a new granny flat, some lenders include a modest rental estimate (based on a rental assessment) but not all. Ask your broker which lenders are most flexible.

Calculate Your Numbers

Use our free calculator to get personalised results based on your specific situation. No sign-up required.