Avoid These Construction Loan Approval Mistakes

Understanding Construction Loan Approval Requirements

Construction loan approval requires detailed documentation that standard home loan applications don't demand. Lenders assess your plans, your builder, your contract structure, and your capacity to service debt throughout a build that can take twelve months or longer.

The most common mistake we see in Bentleigh is treating a construction loan application like a standard purchase application. A registered builder's fixed price building contract is mandatory before most lenders will consider approval. You'll also need council approval for your development application, which means finalised plans drawn to building permit stage. Lenders won't progress an application based on preliminary sketches or concept designs.

Consider a buyer planning a custom design on a block near Centre Road. They approached their bank with architectural renders and a cost estimate from their builder. The application stalled immediately because the lender required council plans, a signed contract with a progress payment schedule, and engineering reports. The delay added three months to their timeline and pushed their build into a higher interest rate environment.

Why Fixed Price Contracts Matter for Approval

Most lenders will only approve construction finance against a fixed price building contract, not a cost plus contract. A fixed price contract locks in the total build cost, which allows the lender to calculate loan serviceability and loan-to-value ratio with certainty.

A cost plus contract introduces risk that the final build cost could exceed the approved loan amount. Even if you're working with a builder you trust, lenders treat cost plus arrangements as higher risk and either decline the application or apply stricter lending criteria. If your builder is proposing a cost plus structure, ask whether they can provide a fixed price alternative before lodging your construction loan application.

In Bentleigh, where many buyers are knocking down post-war homes near the Bentleigh Club or around Patterson station to build contemporary two-storey designs, this distinction becomes critical. Lenders familiar with quality construction in established suburbs will still require contract certainty before approving construction funding.

How Progress Payment Schedules Affect Funding

Your builder's progress payment schedule determines when funds are released during construction. Lenders align their progressive drawdown with these milestones, typically across five or six stages from base slab through to final completion.

The structure of your progress payment finance needs to match your builder's payment terms. If your builder requires 10% at slab stage but your lender's construction draw schedule only releases 5%, you'll need to cover the shortfall from your own funds. This mismatch catches buyers who haven't reviewed both documents side by side before signing.

Most lenders will only charge interest on the amount drawn down at each stage, not the full loan amount. During construction, you'll usually have interest-only repayment options, which keeps costs manageable while the property generates no income. Once construction completes, the loan converts to a standard principal and interest loan under what's known as a construction to permanent loan structure.

Lenders also charge a Progressive Drawing Fee each time funds are released, typically between $200 and $400 per drawdown. Over six drawdowns, this adds $1,200 to $2,400 to your total build cost. Factor this into your budget when calculating how much you need to borrow.

What Happens During Progress Inspections

Before releasing funds at each stage, your lender arranges a progress inspection to confirm the work claimed by your builder has been completed to an acceptable standard. The inspector checks that plumbers, electricians, and other sub-contractors have finished their work and that the build is progressing according to the council plans.

If the inspector identifies defects or incomplete work, the lender may withhold part of the drawdown until the issue is rectified. This can create cash flow problems for your builder and delay the next phase of construction. The solution is to ensure your builder understands that lender inspections are non-negotiable and that each stage must be fully complete before requesting payment.

In areas like Bentleigh, where blocks are often tight and neighbouring properties are close, inspectors also check for compliance with boundary setbacks and overlooking provisions. Any variation from the approved plans can trigger a hold on funding until council approval is updated.

Construction Loan Interest Rates and Rate Types

Construction loan interest rates are typically slightly higher than standard variable home loan rates during the construction period. Some lenders offer the option to fix your interest rate once construction is complete and the loan converts to a standard mortgage, but fixing during the build phase is less common.

During construction, most buyers remain on a variable rate and make interest-only payments based on the progressive drawdown balance. Once the build is finished and you move in, you can refinance to a lower rate, switch to a fixed rate, or remain on the variable product your construction loan was approved under.

If you're building a land and construction package or purchasing suitable land separately before building, your interest rate during the land-holding phase will depend on whether the lender treats the land loan and construction loan as separate facilities or a single combined loan. Some lenders charge higher rates on vacant land, so clarify this structure before committing.

Mistakes That Delay or Derail Approval

The first mistake is applying without a registered builder. Owner builder finance exists, but it's harder to access, requires demonstrated construction experience, and attracts higher rates. Unless you hold a building license and can prove prior project completions, avoid assuming you can self-manage the build and still secure standard construction finance.

The second mistake is underestimating how long council approval takes. Lenders need to see an approved building permit, not just a lodged application. In Bentleigh, particularly for developments that remove established vegetation or alter streetscape character, council processes can extend beyond three months. Start this process well before approaching lenders.

The third mistake is failing to account for the requirement to commence building within a set period from the Disclosure Date. Most lenders require construction to start within six months of loan settlement. If your builder's schedule doesn't align with this condition, you risk the loan offer expiring before work begins.

How Much Deposit You Actually Need

Construction loans typically require a larger deposit than purchase loans. Most lenders will lend up to 80% of the combined land and construction cost without requiring lenders mortgage insurance. Beyond 80%, LMI becomes expensive and some lenders cap construction lending at 90% regardless of insurance.

Your deposit also needs to cover upfront costs that sit outside the loan amount. These include council and building permit fees, soil tests, engineering reports, and any additional payments your builder requires before the first drawdown. In our experience, buyers planning new home construction should budget at least 25% of the total project cost in accessible savings or equity.

If you already own suitable land, your existing equity can form part of your deposit. Lenders will revalue the land at current market rates, and that value contributes to your overall loan-to-value calculation. For buyers purchasing house and land packages from developers, the land component is usually settled first, and the construction loan is approved separately against the building contract.

When to Speak to a Mortgage Broker About Construction Finance

The ideal time to speak to a mortgage broker in Bentleigh is before you sign anything with a builder or purchase land. Different lenders have different appetites for construction funding, and not all lenders offer the same progressive payment schedule or inspection process.

Some lenders are more flexible with custom design projects, while others prefer project home loans with volume builders using standardised plans. Some will fund house renovation loans or spec home finance, while others restrict lending to new builds on vacant land. Knowing which lenders align with your project type prevents wasted time and declined applications.

If you're also considering off the plan finance or investment loans for a build-to-rent project, the lending criteria shifts again. Access construction loan options from banks and lenders across Australia by working with a broker who understands how to structure your application for the project you're actually undertaking, not the project the lender prefers to see.

Call one of our team or book an appointment at a time that works for you. We'll review your plans, your builder's contract, and your financial position to identify which lenders will approve your construction loan application without unnecessary delays or conditions you can't meet.

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