The easiest way to finance a knockdown rebuild

A knockdown rebuild in Fairfield requires a construction loan that releases funds progressively as your builder completes each stage. Unlike a standard home loan where you receive the full amount upfront, construction finance is drawn down in instalments linked to your builder's progress payment schedule.

How construction funding works for a knockdown rebuild

You only pay interest on the amount drawn down at each stage, not the full loan amount. When you demolish the existing property and commence building, the lender holds the approved loan amount in a construction account. As your registered builder completes foundation work, frame stage, lockup, fixing, and practical completion, the lender releases funds after a progress inspection confirms the work is done. A Progressive Drawing Fee typically applies at each drawdown, usually between $300 and $500 per inspection depending on the lender.

Consider a buyer who purchases an older property in Fairfield near the Fairfield Showground precinct. The existing dwelling is dated and requires full demolition. They secure council approval for a new custom design, engage a registered builder under a fixed price building contract, and arrange construction finance through a lender that offers a land and construction package. The loan amount covers the existing purchase price plus demolition and construction costs. Interest is charged monthly on whatever has been drawn, starting with the land component. As the builder completes the slab pour, the first progress payment is released. By lockup stage, roughly 60% of the construction funds have been drawn. The buyer pays interest only on that 60%, not the full construction loan amount, which saves several thousand dollars during the build period compared to drawing the full amount upfront.

Council approval and the development application timeline

Your lender will require proof of council approval before they finalise your construction loan application. Fairfield City Council assesses development applications for knockdown rebuilds, and approval times vary depending on the complexity of your custom design and whether the property sits within a heritage or bushfire zone. Most lenders give you a set period from the Disclosure Date to commence building, typically six to twelve months. If council approval takes longer than expected, you may need to request an extension from your lender before that deadline expires.

Fixed price building contract and cost plus contracts

A fixed price building contract sets the total build cost upfront and protects you from cost overruns. Most lenders prefer this structure because it provides certainty around the loan amount and reduces the risk of funding shortfalls midway through construction. A cost plus contract, where you pay the builder's actual costs plus a margin, offers more flexibility for custom designs but requires a larger contingency buffer and closer lender oversight. If you choose a cost plus arrangement, your lender may require a quantity surveyor's report before approving the loan amount, and they will scrutinise each progress payment more closely to confirm costs align with the original estimate.

In a scenario like this, a buyer planning a knockdown rebuild on a corner block in Fairfield's Edensor Park locality wanted high-end finishes and significant design variation. They initially pursued a cost plus contract with a custom builder, but their lender required a 20% contingency buffer on top of the estimated build cost, which pushed the total loan amount beyond their borrowing capacity. They revised the approach, moved to a fixed price contract with a project home builder who offered enough design flexibility, and reduced the contingency requirement to 10%. The revised loan amount fit within their servicing limits, and the construction loan application was approved within three weeks. The build completed on time, and the buyer transitioned to principal and interest repayments once the final progress payment was released at practical completion.

Interest-only repayment options during construction

During the construction phase, most lenders offer interest-only repayment options, meaning you only pay interest on the drawn-down portion of your loan amount each month. This keeps your repayments lower while the property is uninhabitable and you may still be paying rent or covering other accommodation costs. Once construction reaches practical completion and you receive your occupancy certificate, the loan typically converts to a construction to permanent loan. At that point, you can choose to continue with interest-only repayments for an agreed period, usually one to five years, or switch to principal and interest repayments immediately. The decision depends on your cash flow and whether you plan to use the property as your home or hold it as an investment property.

Progressive Payment Schedule and managing cash flow

Your builder's progress payment schedule determines when funds are released, and understanding this structure helps you manage cash flow during the build. A typical schedule includes a deposit at contract signing, then payments at base stage, frame stage, lockup, fixing, and practical completion. Each payment is a percentage of the total contract price. Your lender arranges a progress inspection before releasing each instalment, and the inspection confirms that the work stage is complete and matches the builder's invoice. If the inspector identifies incomplete work or defects, the lender may withhold part of the drawdown until the builder rectifies the issue. This protects you from paying for work that hasn't been delivered and ensures quality construction throughout the project.

Loan structure for land and build projects in Fairfield

Fairfield's established residential areas near the railway line and around Fairfield Hospital attract buyers looking to secure suitable land for a knockdown rebuild, especially where older homes on larger blocks offer potential for modern, energy-efficient designs. A land and build loan combines the land purchase and construction costs into a single facility, avoiding the need for separate finance arrangements. Some lenders offer first home buyer concessions on construction finance, including reduced deposit requirements and stamp duty exemptions where applicable. If you already own the land, the lender uses the current land value as part of your deposit calculation, which can reduce the amount of cash you need to contribute upfront.

If your budget allows, you can make additional payments during the construction phase to reduce the outstanding loan amount and lower the interest charged once you transition to the permanent loan. Most construction loan products permit extra repayments without penalty, but confirm this with your lender before committing to a specific product. A mortgage broker can compare construction loan options from banks and lenders across Australia and identify which products offer the most flexibility for your circumstances.

Call one of our team or book an appointment at a time that works for you to discuss your knockdown rebuild finance and confirm your construction loan options.

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