Do you know what land purchase loans really cost?

When you buy land to build on, you're not funding one thing but two separate stages that need to be coordinated carefully.

The land purchase settles first, which means you'll need to service that loan while your house is being built. Many young families underestimate how long that period lasts and what it costs. A land and construction package structures the funding so that you're only paying interest on what's been drawn down at each stage, but it still requires you to carry the land loan from day one. That can stretch a household budget if construction takes longer than expected or if you're waiting on council approval before work can start.

How land and build loans are structured

A construction to permanent loan is split into two phases. The first phase covers your land purchase, and the second phase releases funds progressively as your build reaches key milestones. Once construction is complete, the loan converts to a standard home loan with principal and interest repayments.

Consider a young family purchasing suitable land and planning a custom design. They settle on the land with a 10% deposit, and the lender approves construction funding based on a fixed price building contract with a registered builder. During construction, the lender releases funds at intervals tied to a progress payment schedule, usually after a progress inspection confirms that each stage has been completed. The family pays interest only on the land loan and the amount drawn down for construction, which keeps repayments lower during the build. Once the house is finished and they move in, the loan switches to a standard repayment structure.

This structure works well when timelines align, but delays in the development application or material shortages can extend the period you're paying interest without living in the property. That's why understanding the full timeline and budgeting for it is central to making this approach work for your household.

What council approval and timing mean for your budget

You'll typically need to commence building within a set period from the disclosure date, which is when your lender formally approves the construction loan. If council plans take longer to process or if your builder's schedule is pushed back, you may be holding the land loan longer than anticipated.

In our experience, families often focus on the build cost and overlook how long they'll be servicing the land loan before construction even starts. If you're renting while you wait, that's a double cost. If you're living with family, the timeline might be more manageable, but it still needs to be factored into your overall budget.

Some lenders allow you to capitalise interest during construction, which means the interest is added to the loan balance rather than paid out of pocket each month. That can help with cash flow, but it increases the final loan amount and the interest you'll pay over the life of the loan. It's worth discussing with your broker whether interest-only repayment options or capitalising interest makes more sense for your situation, particularly if you're managing other costs like childcare or a single income during parental leave.

How progress payments and drawdowns are coordinated

Construction funding is released in instalments, usually aligned with a progressive drawing schedule set out in your fixed price contract. The builder submits progress claims at stages like base, frame, lockup, fixing, and practical completion. The lender arranges a progress inspection, and once the work is verified, the funds are released to the builder.

You'll be charged a progressive drawing fee each time a drawdown occurs, which typically ranges from $200 to $400 per inspection depending on the lender. If your build has five or six drawdown stages, those fees add up. They're separate from the construction loan interest rate and need to be included in your overall cost planning.

The amount drawn down at each stage is usually a percentage of the total contract price, and you only pay interest on what's been released. If the contract is $450,000 and the first drawdown is 10% for the base stage, you'll start paying interest on $45,000 in construction funding plus whatever you've borrowed for the land. As each stage is completed and funds are released, your interest cost increases progressively until the full loan amount is drawn.

This is different from a house & land package, where the land is often already titled and the build timeline is more predictable. When you're purchasing land separately and coordinating your own builder, the timing depends on multiple parties, and delays at any point can affect your cash flow.

What happens if you're using an owner builder or cost plus contract

If you're acting as an owner builder or using a cost plus contract instead of a fixed price building contract, lenders treat the application differently. Owner builder finance is considered higher risk, so fewer lenders offer it, and those that do typically require a larger deposit and charge a higher construction loan interest rate.

Under a cost plus arrangement, the final build cost isn't fixed, which means the lender needs to assess whether the loan amount will cover the project. You'll need detailed costings, quotes from sub-contractors, and evidence that you have a buffer for unexpected expenses. Most lenders will also want to see that you have experience managing a build or that you're working with a project manager.

For young families without a background in construction, this path is usually more complex than working with a registered builder under a fixed price contract. The time required to coordinate plumbers, electricians, and other trades, along with the financial risk of cost overruns, often outweighs the potential savings.

How Blackfish Finance helps you plan the full funding picture

When you're buying land and building, the loan structure is only one part of the picture. We work with you to map out the timeline, the staging, and the cash flow so you know what you'll be paying at each phase and how long that phase is likely to last. That includes understanding when council approval is likely to be finalised, what your builder's schedule looks like, and whether you need to budget for capitalised interest or additional payments during the build.

We also help you access construction loan options from banks and lenders across Australia so you're not limited to one lender's terms or structure. Different lenders offer different draw schedules, fees, and interest structures, and finding the right fit can make a material difference to your cash flow during construction.

If you're weighing up whether to buy land and build or purchase an established home, we can model both scenarios with you so you can see the full cost and timeline before you commit. That includes looking at borrowing capacity across both options, factoring in how much you can service during construction, and planning for the transition to full repayments once the build is complete.

Call one of our team or book an appointment at a time that works for you. We'll walk through your situation, the land you're considering, and the type of build you're planning, and structure the funding so it supports your family's goals without stretching your budget beyond what's sustainable.

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