Granny Flat Finance

Adding a granny flat to your property can generate rental income, house a family member, or significantly increase the overall value of your site. The finance, however, sits in a narrow policy band. Most banks apply conservative LVRs and require a licensed builder contract and council approval before they will issue a formal loan offer. Self-employed borrowers face additional friction with income documentation. Settled Funding Group works with homeowners and investors adding granny flats across Australia, accessing bank and non-bank lenders whose policy fits, and for unique scenarios can introduce you to private finance options.

Who This Is For

• •Homeowners adding a granny flat to generate rental income from their existing property
• •Those building a granny flat to house a family member such as an aged parent or adult child
• •Investors adding a granny flat to boost rental yield on an existing investment property
• •Borrowers on a battle-axe block or large suburban lot with room for a secondary dwelling
• •Those who have obtained complying development or DA approval for a granny flat
• •Self-employed borrowers building for investment using equity in their existing property

How Granny Flat Finance Works

Granny flat finance is typically structured as a construction loan drawn against the existing equity in your property. The lender assesses the combined LVR: the existing mortgage balance plus the granny flat build cost, measured against the on-completion value of the whole property with the new dwelling included. Because the LVR caps are often tighter than standard construction loans, your equity position and the on-completion valuation are particularly important. Joseph Farhat reviews your existing equity, your council approval type, and your build plan, then identifies the lenders across the panel whose granny flat policy fits your situation.

A $1M alt doc construction loan funded a house and granny flat for a self-employed borrower in Blacktown. The key approval factors were adequate equity in the site, a licensed builder contract, valid CDC approval, and well-prepared alternative income documentation. See the Blacktown house and granny flat case study for the full picture of what made that application work.

What Lenders Assess for Granny Flat Finance

• •Combined LVR against on-completion value: lenders assess the total loan (existing mortgage plus build cost) as a proportion of the on-completion value of the entire property. Many banks cap this lower than for a standard construction loan.
• •Council approval type: a complying development certificate (CDC) is the simplest path. A full DA is acceptable but adds time. Most lenders require approval before issuing formal loan offers.
• •Licensed builder contract: a fixed-price contract with a licensed builder is required. Owner-builder granny flats face additional policy restrictions at most bank lenders.
• •Income and serviceability: sufficient income to service the combined debt during construction and at completion. Self-employed borrowers can access alt doc options through non-bank lenders.
• •Land size and setback compliance: lenders check that the lot size and proposed dwelling footprint comply with council setback and coverage rules. Non-compliant sites are a common reason applications stall.
• •Rental income treatment: some lenders include projected rental income from the granny flat in the serviceability calculation; others do not. Non-bank lenders are generally more accommodating on this point.

The Granny Flat Finance Process: What to Expect

1. 1.Initial review: share your property details, existing mortgage balance, CDC or DA, builder contract, and income position with Settled Funding Group. Joseph Farhat assesses the combined LVR position and identifies lenders whose granny flat policy accommodates your scenario.
2. 2.Full application prepared and submitted with CDC or DA documentation, builder contract, income documentation, and any existing mortgage details.
3. 3.Lender commissions an on-completion valuation of the whole property including the new granny flat.
4. 4.Formal approval and loan documents issued, typically two to four weeks from submission.
5. 5.Staged drawdowns released from slab through to practical completion. Settled Funding Group coordinates with the lender at each progress payment milestone throughout the build.

Indicative Finance Options

Granny Flat Finance Broker

Granny flat and secondary dwelling finance sits in a narrow policy band that varies sharply between lenders. Many banks cap the LVR lower than for a standard construction loan, require a licensed builder contract, and treat the second dwelling cautiously when assessing value and rental income. Whether the granny flat is for family, rental, or dual occupancy, and how the lender values the combined property, all change the outcome, and a scenario one lender declines is often funded comfortably by another. A broker who knows which lenders genuinely fund secondary dwellings saves you time, avoids wasted applications and unnecessary credit enquiries, and reaches non-bank and specialist lenders that borrowers cannot easily approach directly. For complex or alt-doc granny flat scenarios, a broker knows where the deal will actually get done.

Settled Funding Group represents you, not the lender. Joseph Farhat reviews your site, your build plan, and your income position, then matches your scenario to the right lender from our 90+ panel and negotiates terms on your behalf. We prepare and manage the application from assessment through to your first construction drawdown, and for unique scenarios we can introduce you to private finance options. As a broker, we are typically paid by the lender on settlement, so in most cases there is no direct cost to you. If your granny flat finance is complex or has been declined elsewhere, talk to us early and we will tell you honestly what is achievable.