Financing a knock-down rebuild
Rebuilding on land you already own is one of the more sensible ways to end up in the house you actually want, and one of the more complicated ways to finance it. There is no purchase, so there is no purchase price for a lender to anchor to. Everything runs on the completed home's assessed value and on your ability to carry the debt while nothing is finished.
How the lending is structured
Your existing property, usually with the house still on it, provides the security. The lender assesses the completed dwelling's value based on the plans and the fixed-price build contract, then approves a facility covering the build. Funds are released in stages as construction progresses, commonly at slab, frame, lockup, fit-off and completion, each after an inspection. Interest accrues only on what has been drawn, so repayments start small and grow as the build advances.
What the lender is really assessing
Three things. The end value of the completed home, which caps the facility. Your capacity to service the eventual full debt, tested at a buffer rate. And the build itself: a licensed builder, a fixed-price contract, council or complying development approval, and adequate insurance. Owner-builder projects face a much shorter lender list and tighter terms, which is worth knowing before committing to that path.
Where rebuilds go wrong
Almost always the same two places. Contingency: variations, site costs and selections accumulate, and a mid-build application for more money is assessed hard and slowly. Holding the contingency inside the approved facility from the start means changes get funded at loan pricing on your timeline. And accommodation: you are paying a mortgage on a site with no house on it while also paying rent somewhere, for as long as the build takes. Both belong in the budget from day one.
Rebuild against renovate against move
Worth comparing honestly. A major renovation avoids demolition and can sometimes be funded more simply through an equity release. Moving avoids the build entirely but incurs transfer duty and selling costs. A rebuild delivers exactly the house you want on land you already have, at the cost of complexity and time. There is no universally right answer, only arithmetic and temperament.
The sequence, in order
Each stage depends on the one before it, which is why the finance is arranged before the builder is booked.
Before plans are finalised, before a builder is engaged. The end value and your servicing set what is possible.
Council or complying development approval, a licensed builder and a fixed-price contract are what lenders want to see.
Five stages is typical, each after inspection, with interest on drawn funds only. The construction guide.
Not a savings account you hope not to touch. Inside the approved amount, available at loan pricing.
Considering a rebuild rather than moving?
Charles can price the rebuild against buying elsewhere, including the holding costs nobody budgets for.
Knock-down rebuild questions
Can I borrow against land I already own?
Yes, that is the usual structure. Your existing property provides the security, and the lender assesses the completed home's value from the plans and the build contract. Existing equity in the land frequently means little or no additional cash deposit is required, which is one of the genuine advantages of rebuilding.
How do progress payments work?
The approved facility releases funds at completed construction stages, commonly slab, frame, lockup, fit-off and completion, each after an inspection. You pay interest only on what has been drawn, so repayments start low and rise as the build advances. The builder is paid from the facility rather than by you directly.
What happens if the build runs over budget?
Variations and site costs come from your contingency, which is precisely why it should sit inside the approved facility rather than in a savings account. Applying for additional funds mid-build is possible but assessed hard and slowly, and it happens at the worst possible moment.
Where do I live during construction?
Wherever you arrange, and it costs money. You will typically be servicing the loan on a site with no house while paying rent elsewhere, for the duration of the build. It is the cost most rebuild budgets omit, and it belongs in the plan from the beginning.
Is a rebuild better than renovating?
It depends on the existing house and what you want. Renovating avoids demolition and can sometimes be funded more simply; rebuilding gives you exactly the home you want without the compromises of working around old structure. Compare build cost plus contingency plus holding costs against the renovation alternative, honestly, before choosing.
Related guides
General information only, not credit or financial advice. Professional lending policies, eligible occupations and loan-to-value thresholds vary by lender and change over time. Eligibility is confirmed against current lender policy in an assessment; nothing on this page is a promise that any lender will approve any application.
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