Top Strategies to Understand Construction Loan Features

Construction finance works differently to a standard home loan because the property doesn't exist yet.

You're borrowing against something being built in stages, which means the lender releases funds progressively as the work is completed. Understanding how these features work helps you prepare for the cashflow requirements and timing involved in building a custom home, completing a renovation, or purchasing a house and land package.

Progressive Drawdown: How Lenders Release Funds During Construction

Lenders release construction funding in instalments as each stage of the build is completed and inspected. You don't receive the full loan amount upfront. Instead, funds are drawn down at key milestones such as base stage, frame stage, lock-up, fixing, and completion. Each drawdown is triggered by a progress inspection, which the lender arranges to confirm the work has been done to the required standard. This protects both you and the lender by ensuring funds are only released when progress has been verified.

In our experience, buyers underestimate how much coordination is required between the builder, the lender, and the inspections process. A delay in requesting a drawdown or organising an inspection can hold up payments to sub-contractors, which in turn delays the next stage of the build. Staying on top of the progress payment schedule and communicating with your builder about when each stage will be ready keeps the process moving.

Interest Charged Only on Drawn Amounts

You only pay interest on the amount drawn down at each stage, not the full loan amount. If your total loan amount is $500,000 and the lender has released $150,000 for the base and frame stages, your interest is calculated on $150,000 until the next drawdown occurs. This keeps your repayments lower during construction compared to what they'll be once the build is finished and the full loan is drawn.

Most construction loans offer interest-only repayment options during the build period, which means you're only paying the interest component each month without reducing the principal. Once construction is complete, the loan typically converts to a standard principal and interest home loan, or you can choose to continue with interest-only if the lender allows it and it suits your situation.

Fixed Price Contracts and Cost Plus Agreements

A fixed price building contract specifies the total cost of the build upfront, and the builder is responsible for completing the work within that amount. This gives you certainty about the loan amount you'll need and protects you from cost overruns caused by the builder. Most lenders prefer fixed price contracts because the risk is contained, and the progress payment schedule is clear from the outset.

A cost plus contract, on the other hand, means you pay the actual cost of materials and labour plus an agreed margin or fee to the builder. The final cost isn't locked in, which introduces more risk. Some lenders won't approve construction finance on a cost plus basis, and those that do often require a larger deposit or more detailed documentation. If you're considering a cost plus arrangement, confirm early on whether your lender will support it and what additional conditions might apply.

Progress Inspection Fees and Drawing Fees

Each time the lender releases funds, they arrange a progress inspection to verify the stage is complete. Some lenders charge a Progressive Drawing Fee or progress payment fee for each inspection and drawdown, which can range from around $200 to $400 per draw. Over the course of a build with five or six stages, these fees add up. Other lenders include the inspection costs within the loan without charging separately, so it's worth comparing how different lenders structure these fees when you're choosing your construction finance.

The inspection itself is usually conducted by a third-party valuer or building inspector who reports back to the lender. The lender then approves the drawdown and releases the funds directly to the builder or into a nominated account. The timing from inspection to funds being available can take a few days, so factor that into your builder's payment schedule.

Land and Construction Packages: How the Loan Is Structured

When you're buying land and building on it, the loan is typically split into two components. The first component covers the purchase of the land, and the second covers the construction. You settle on the land first, and once that's complete, the construction phase begins. During the land purchase, you'll pay interest on the amount borrowed for the land. Once construction starts, you'll also pay interest on the progressive drawdowns as they occur.

Consider a buyer purchasing suitable land in a growth corridor and planning to build a project home. They settle on the land with a portion of their loan, then wait for council approval and the development application to be finalised before construction can commence. The lender usually requires building to start within a set period from the loan's disclosure date, often six to twelve months. If there's a delay in obtaining council plans or approval, the buyer may need to request an extension from the lender or risk the construction loan offer expiring.

Timeframes and Council Approvals

Most construction loan approvals require you to commence building within a set period from the disclosure date, which is when the loan contract is issued. This timeframe is typically six to twelve months, depending on the lender. If council approval or the development application takes longer than expected, you may need to go back to the lender to request an extension or reapply for finance.

Delays at the council level are common, particularly in areas with high development activity or where the design requires non-standard approval. If you're planning a custom design rather than a standard project home, allow extra time for the approval process and make sure your builder and lender are aware of the expected timeline.

Owner Builder Finance and Registration Requirements

If you're planning to act as an owner builder rather than engaging a registered builder, your finance options are more limited. Most mainstream lenders require the construction to be managed by a registered builder with appropriate insurance and licenses. Owner builder finance is available, but it usually requires a larger deposit, more detailed documentation of your building experience, and closer oversight of the build by the lender.

Lenders want assurance that the project will be completed to a standard that supports the property's value. Without a registered builder, that assurance is harder to provide. If you're confident in your ability to manage the build and have relevant experience, talk to a mortgage broker who works with lenders that offer owner builder finance. Not all brokers have access to these products, so it's worth asking upfront.

Renovation Finance: How Construction Features Apply to Existing Homes

A house renovation loan works on similar principles to new build construction finance. Funds are released progressively as the renovation work is completed and inspected. The lender will want to see a fixed price contract from your builder, a scope of works, and council approval if the renovation involves structural changes or extensions.

Renovation finance is often used when the cost of the work is significant enough that paying upfront isn't practical. The loan covers both the purchase of the property and the cost of the renovation, or if you already own the property, you can refinance to release equity for the renovation. Refinancing to fund a renovation can be a useful way to access construction funding without selling or moving, particularly if your current property has increased in value since you bought it.

The same progressive drawdown structure applies, with funds released at agreed stages such as demolition, structural work, plumbing and electrical rough-in, and completion. If you're using a house renovation loan, make sure your builder is comfortable with the progress payment schedule the lender requires, as it may differ from their usual payment terms.

Converting to a Standard Home Loan After Construction

Once the build is complete and you've moved in, the construction loan converts to a standard home loan. This is sometimes called a construction to permanent loan. The interest-only period ends, and you begin making principal and interest repayments based on the full loan amount. The interest rate may also change at this point, depending on the terms of your loan.

Some lenders offer a single loan product that covers both the construction phase and the ongoing mortgage, while others require you to transition from a construction facility to a separate home loan product. If the latter applies, you'll go through a second settlement process once the build is finished. Understanding how the conversion works before you start the build helps you plan for the change in repayments and any additional costs involved.

If you're using investment loans for a build, the same construction loan features apply, but the way you structure the loan may differ depending on your tax situation and whether you're planning to rent the property once it's complete. Talk to your accountant and broker together so the loan structure supports both the build phase and your longer-term investment strategy.

Once you've worked through the features that matter for your build, the next step is getting your application in front of the right lender. Call one of our team or book an appointment at a time that works for you.

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