Updated 7 November 2026 (Australia/Sydney).
A useful renovation finance plan starts with the work itself. A cosmetic update and a structural extension can have different costs, documentation and payment schedules. Before deciding how to borrow, set out what is included, what is optional and what must be completed before the home can be used as intended.
Build the budget before choosing finance
Get written quotes with clear inclusions and exclusions. Add professional fees, approvals, temporary accommodation if needed and a separate allowance for unexpected work. Ask how variations will be priced and approved. Your contingency should be visible in the budget, rather than hidden in an optimistic estimate of the finished property’s value.
Map each expected payment to a funding source and date. Ask what would happen if the work ran late or a payment became due before finance could be released. Resolve that gap before signing commitments you cannot meet.
Compare ways to fund the work
Savings can fund some or all of a project, but consider how much emergency cash would remain. If you have an offset account, spending its balance can increase the loan balance on which interest is calculated. Redraw is different: access to extra repayments depends on the existing loan’s conditions. (Moneysmart: Mortgage offset accounts)
Ask whether increasing or refinancing the mortgage is available for your proposed work. Compare the repayment term and switching costs as well as the rate. Refinancing may involve discharge, application or fixed-rate break costs, and extending the term can increase interest over time. (Moneysmart: Switching home loans)
A personal loan is another option to compare for eligible improvements. Check its permitted purpose, security, fees, repayment term and early-payment conditions. A shorter term may require a higher monthly payment, so compare the total cost alongside affordability rather than selecting on the monthly figure alone. (Moneysmart: Personal loans)
Match major works to the payment process
Construction finance may suit some substantial renovations. For example, ANZ describes eligible major-renovation lending using a licensed builder, a fixed-price contract and progress payments. This is one lender’s process, not a universal approval rule or a recommendation of that lender. Ask the proposed lender which contract, valuation and payment requirements apply to your project. (ANZ: What you need to know about construction loans)
Do not assume the lender will fund every variation. Confirm how additional costs would be assessed and what cash you might need to provide before work begins.
Check the building contract separately
NSW guidance sets out written-contract requirements for residential building work. It also says progress payments should relate to work completed, and recommends checking the contractor’s licence details. Review the applicable insurance requirements and obtain legal advice on unclear or altered terms before signing. Finance approval does not replace these checks. (NSW Government: Contracts for residential building work)
Keep the approved scope, contract, invoices and loan documents together. Agree who will request each payment and allow time for the lender’s checks. A clear payment plan helps you see problems early without assuming the renovation will automatically add more value than it costs.
This is general information, not personal financial, credit, building or legal advice. Product availability and approval depend on the project and your circumstances.