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Granny Flat Finance 101: How Australians Are Paying for Their Builds
Cost & Finance

Granny Flat Finance 101: How Australians Are Paying for Their Builds

August 17, 2026

Financing a granny flat build isn't like getting a standard home loan. Here's how Australians are actually paying for their secondary dwellings.

Option 1: Home Equity

If you have equity in your existing home, redrawing or refinancing is the most common approach. Interest rates are typically lower than personal loans, and the granny flat adds value to your property.

Option 2: Construction Loan

Some lenders offer construction loans specifically for granny flats. These work like standard construction loans with progress payments, but not all lenders are familiar with secondary dwellings.

Option 3: Personal Savings

Many granny flat builders offer payment plans tied to construction milestones: deposit, slab, frame, lock-up, and completion. This can make the cost more manageable.

Option 4: Personal Loan

For smaller builds, a personal loan may suffice. Rates are higher than mortgage rates, but the application process is simpler and faster.

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