How to Prepare Construction Loan Documentation

What Documentation Do You Need for a Construction Loan Application?

A construction loan application requires detailed plans, contracts, and proof of costs before approval. Lenders assess both your borrowing capacity and the viability of the build itself, which means you'll need council-approved plans, a fixed price building contract with a registered builder, and a clear breakdown of how funds will be drawn down during construction.

Consider a buyer planning a knock-down rebuild in Mentone. They own the land outright and have engaged an architect to design a two-storey family home. The lender won't just assess their income and deposit. They'll want to see council plans, a development application approval or confirmation that approval is pending, a signed contract with the builder, and a progress payment schedule that shows when each stage will be completed and how much will be drawn at each point. Without these documents in place, the application stalls.

The difference between a standard home loan and construction funding comes down to risk. A lender can't value a property that doesn't exist yet, so they rely on documentation to confirm the project is viable, the costs are reasonable, and the builder is capable of completing the work.

Council Approval and Development Applications

You need either full council approval or confirmation that your development application has been lodged before most lenders will assess your construction loan application. Some lenders will issue conditional approval while council consent is pending, but they won't release funds until all approvals are finalised.

Mentone sits within the City of Kingston, and depending on the scope of your project, you may need a planning permit in addition to a building permit. If you're demolishing an existing dwelling and rebuilding, or if your design includes a second storey or certain setback variations, council approval timelines can stretch to several months. Lenders understand this, but they need to see evidence that the application is progressing. A copy of your lodged development application, correspondence from council, or a planning permit if already issued will satisfy this requirement.

If you're building a project home on a vacant block in one of the newer subdivisions near Mentone's eastern boundary, council approval is often more direct. But even in those cases, the lender will want confirmation that all necessary permits are either in hand or actively being processed.

Building Contract and Fixed Price Requirements

Most lenders require a fixed price building contract before they'll approve construction funding. This contract must be signed by both you and a registered builder, and it should include a detailed scope of works, timelines, and a progress payment schedule.

A cost plus contract, where the builder charges actual costs plus a margin, is harder to finance. Lenders prefer certainty, and a cost plus arrangement introduces variables that make it difficult to assess total project cost upfront. If you're working with a custom builder who prefers this structure, expect to spend more time finding a lender willing to consider it, and be prepared for a smaller loan amount or higher deposit requirement.

The contract also needs to specify when construction will commence. Many lenders include a clause that requires you to commence building within a set period from the disclosure date, often six months. If your builder can't start within that window, you may need to renegotiate or extend the approval, which can delay settlement.

Progress Payment Schedule and Draw Documentation

Construction loans are drawn progressively, not as a lump sum. The lender releases funds in instalments as each stage of the build is completed and verified. Your building contract should include a progress payment schedule that aligns with these stages, typically foundation, frame, lock-up, fixing, and completion.

Lenders only charge interest on the amount drawn down at each stage, which keeps costs lower during construction. But they also charge a progressive drawing fee each time funds are released. This fee covers the cost of a progress inspection, where a representative from the lender or a third-party valuer confirms that the stage has been completed to an acceptable standard before releasing the next payment.

In a scenario where a Mentone homeowner is adding a second storey to their existing weatherboard home, the progress payment schedule might include demolition, new foundation for the upper level, frame and roof, external cladding, internal fit-out, and final completion. Each stage needs to be documented clearly in the building contract so the lender knows when to release funds and the builder knows when to expect payment. If the schedule is vague or doesn't match the lender's standard draw stages, you'll need to negotiate adjustments before approval.

Proof of Deposit and Genuine Savings

Construction loans typically require a deposit of at least 10% to 20% of the total project cost, which includes both the land value and the build cost. If you already own the land, the equity in that land can form part or all of your deposit. If you're purchasing land as part of a land and construction package, you'll need to show genuine savings or equity from another property.

Lenders want to see that your deposit has been held in your account for at least three months, or that it comes from a documented source such as the sale of a property, an inheritance, or a gift from family with a signed declaration. Funds that appear suddenly without explanation won't meet the genuine savings requirement, and that can limit your borrowing capacity or require you to take out lenders mortgage insurance.

For a Mentone resident planning to build on a block near the Mentone Girls' Secondary College precinct, where land values have held firm, the equity in that land might cover the entire deposit requirement. But the lender will still want evidence of additional funds to cover settlement costs, council fees, and any gaps between the contract price and the final loan amount.

Builder Credentials and Insurance

Your builder must be registered and hold the appropriate insurance for the project. In Victoria, this means domestic building insurance, which protects you if the builder becomes insolvent or fails to complete the work. Lenders will request a copy of the builder's registration, their insurance certificate, and in some cases, recent financials to confirm they're solvent.

If you're acting as an owner builder, documentation requirements increase significantly. You'll need to prove you have the skills and experience to manage the project, provide a detailed cost breakdown, and show how you'll engage and pay sub-contractors such as plumbers and electricians. Most lenders either don't offer owner builder finance or limit it to borrowers with construction industry experience and a strong financial position.

How the Application Comes Together

Once you've gathered council plans, a signed fixed price building contract, proof of deposit, and builder credentials, the lender assesses your borrowing capacity using the same serviceability criteria as a standard home loan. They'll look at your income, expenses, existing debts, and credit history, but they'll also assess the total project cost against the estimated end value of the completed home.

If the project involves a renovation rather than new construction, such as extending a period home near Mentone Beach, the lender may require a pre-renovation valuation and a projected post-renovation valuation. The loan amount will be based on whichever is lower: your borrowing capacity or a percentage of the completed property value.

Access to construction loan options from banks and lenders across Australia means you're not limited to a single product. Some lenders offer interest-only repayment options during the construction phase, which keeps costs down while you're still paying rent or holding your existing property. Others convert automatically to principal and interest once construction is complete. The structure you choose depends on your cash flow and whether you're planning to live in the property or hold it as an investment.

If your current loan is coming up for renewal or you're considering whether to consolidate construction funding with an existing mortgage, a loan health check can clarify your options before you commit to a specific lender or product. Construction finance sits alongside your other borrowing, and the way you structure it affects your long-term flexibility and repayment timeline.

Call one of our team or book an appointment at a time that works for you. We'll review your project, confirm what documentation your preferred lenders need, and make sure your application is structured to give you access to the right funding at each stage of the build.

Frequently Asked Questions