The Easiest Way to Manage Construction Loan Risks

Construction funding carries risks that standard home loans do not. Your money releases in stages tied to building progress, your costs can shift during the build, and delays compound both timelines and budgets.

Kew has seen consistent demand for knockdown-rebuild projects and substantial renovations, particularly on larger blocks near Studley Park and the Cotham Road corridor. The combination of heritage overlays in parts of the suburb, high land values, and quality builder demand means construction timelines and budgets require careful management from the outset.

Fixed Price Building Contracts Reduce Cost Blowout Exposure

A fixed price building contract locks your construction cost at the time you sign. The builder agrees to complete the work for a set amount, regardless of material price increases or unforeseen site costs during the build.

Consider a renovation in Kew where council approval required additional engineering reports after construction commenced. Under a fixed price contract, the builder absorbed the extra consulting costs without passing them to the owner. The loan amount remained stable, and the progress payment schedule continued as planned. Without that fixed price structure, the owner would have needed to source additional funds mid-build or reduce the scope of work.

Cost plus contracts shift risk onto you. The builder charges their actual costs plus a margin, and if materials increase or site conditions require more labour, your total construction cost rises. Lenders structure loan limits based on your initial application, so cost overruns often mean finding additional funds from savings or requesting a loan increase mid-project, which may not be approved.

Progress Payment Schedules Determine When Funds Release

Lenders release construction funding in stages as work completes, not as a lump sum at the start. A progress payment schedule defines the percentage of the loan amount that releases at each stage, typically after a progress inspection confirms the work meets the required standard.

In our experience, disputes over progress inspections cause more delays than material shortages. If a plumber or electrician has not completed work to the inspection standard, the drawdown does not occur, and the builder waits for payment. That delay can cascade through the project if subcontractors stop work while waiting for funds.

Most lenders require five to six drawdowns across a build: deposit, slab or frame stage, lockup, fixing, and practical completion. Some also include a land purchase stage for house and land packages or land and build loan structures. Each stage requires a construction draw schedule that aligns with your builder's progress payment terms. If your builder expects payment within five business days of stage completion but your lender takes ten days to release funds after an inspection, you either need to cover the gap yourself or negotiate an extended payment term with your builder.

Interest Rate Structure Adds Holding Costs During Construction

During construction, lenders only charge interest on the amount drawn down, not the full loan amount. That reduces your repayment obligation while the build progresses, but it still creates a holding cost you need to fund from savings or income.

As an example, a project with a loan amount covering land and construction might draw $700,000 for the land purchase at settlement, then release a further $150,000 at slab stage three months later. At current variable rates, you would pay interest on $700,000 for the first three months, then on $850,000 from that point forward. Most construction loans offer interest-only repayment options during the build, meaning you are not reducing principal, just servicing the accruing interest.

Some lenders charge a Progressive Drawing Fee each time funds release, typically between $150 and $400 per drawdown. Over five drawdowns, that adds up to $2,000 in fees that sit outside the construction cost itself. Factor those fees into your cash flow planning before you commence building.

Council Approval Delays Can Trigger Contract Expiry Clauses

Most construction loan approvals require you to commence building within a set period from the approval date, often six months. If council approval or a development application takes longer than expected, your loan approval can expire before construction starts.

Kew sits within the City of Boroondara, where some streets fall under heritage overlays or neighbourhood character provisions that extend approval timeframes. A project near the Boulevard or Studley Park Road may require additional design review or neighbour consultation, pushing council plans approval beyond the standard six to eight weeks. If your construction loan approval expires while waiting for council, you may need to reapply, which means reassessment under current lending criteria and potentially a different interest rate or loan structure.

To manage this, delay your construction loan application until council approval is either confirmed or close to finalisation. You can submit your development application early, but holding off on the formal loan application until the approval is imminent keeps your finance timeline aligned with your build timeline.

Lender Valuation Risk on Custom Design Projects

Lenders assess construction funding applications based on the completed value of the property, not just the land value and construction cost. If the valuer determines the finished property will be worth less than your total loan amount, the lender may reduce your approved borrowing or decline the application.

Custom home projects with highly specific design features can present valuation challenges. A valuer considers comparable sales in the area, and if your design does not align with typical properties in Kew, the completed value estimate may come in lower than expected. In those cases, you either need to increase your deposit to bring the loan amount within the lender's acceptable range or adjust the design to align more closely with local market norms.

Owner Builder Finance Requires Different Lender Criteria

If you plan to act as owner builder rather than engage a registered builder, your construction funding options reduce significantly. Most lenders require a registered builder with appropriate insurance before they will approve a construction loan, as it reduces their risk exposure if the project stalls or quality issues arise.

Owner builder finance is available through some lenders, but it typically requires a larger deposit, carries higher interest rates, and involves more frequent progress inspections. The lender wants assurance that you can manage subcontractors, pay them on schedule, and deliver a project that meets the valuation expectations set at the start. If you do not have a construction management background, that assurance is harder to provide, and the lender prices that uncertainty into the loan terms.

Call one of our team or book an appointment at a time that works for you to discuss how construction funding structures apply to your project and what steps reduce financial risk during the build.

Frequently Asked Questions