Avoid these 5 mistakes when buying land to build on

Buying land and building a house isn't like getting a standard home loan.

You're dealing with two assets instead of one, payments that get released in stages, and lenders who want to see council plans before they commit a dollar. If you're working as a concreter, you've probably seen enough slabs poured to know that timing and sequence matter. Same applies when you're funding the job.

The single thing you need to understand is this: construction finance works on progressive drawdown. The lender doesn't hand over the full loan amount upfront. They release funds at specific stages as the build progresses, and you only pay interest on what's been drawn down so far. That structure affects everything from how much cash you need upfront to when your builder gets paid.

The upfront cash requirement sits higher than you'd expect

You need to cover the land purchase in full before construction funding kicks in. Most lenders require you to settle the land first, then switch to construction drawdown once you've got council approval and a fixed price building contract in place. That means finding a deposit for the land plus stamp duty and settlement costs before the building loan starts.

Consider a concreter looking at a block in a growth corridor. The land costs are settled separately, often requiring a 10% to 20% deposit depending on the lender and your circumstances. Once that's done, the construction portion of the loan activates, but only after the lender has reviewed the building contract, council plans, and development application. If you're planning to start work within six months of settlement, you need those approvals moving before you buy the land. Delays in council approval mean delays in drawdown, and you're still holding the land costs in the meantime.

Progress payments don't align with your builder's invoice schedule

Lenders release funds based on their own inspection schedule, not your builder's payment terms. A typical progress payment schedule might include drawdowns at slab stage, frame stage, lockup, fixing, and completion. Your builder invoices you, you request a drawdown from the lender, the lender sends an inspector, and then the funds get released. That gap between invoice and payment can stretch to a week or more.

If your builder operates on a cost plus contract instead of a fixed price building contract, some lenders won't touch it. They want certainty around the final loan amount, and cost plus arrangements don't provide that. You'll also pay a Progressive Drawing Fee each time funds get released, usually a few hundred dollars per drawdown. That's separate from the interest you're paying on the amount already drawn down. Most construction loans offer interest-only repayment options during the build, which keeps your monthly costs lower while the house is going up. Once construction finishes, the loan converts to a standard principal and interest mortgage, assuming you've set up a construction to permanent loan from the start.

Lenders expect you to commence building within a set period from the Disclosure Date

Most construction loans include a condition that you start building within six to twelve months of loan approval. If you buy land with the intention of sitting on it for a year or two before building, the construction loan approval will lapse. You'll need to reapply, and your circumstances might have changed by then.

That timeframe also affects how you structure the purchase. Some buyers try to lock in land now and build later, but construction finance doesn't work that way. The lender approves the loan based on the land value, the building contract, and your current income. If any of those shift before you start, the approval might not hold. For concreters working with variable income or contract-to-contract employment, that means getting your self-employed loans documentation sorted before you commit to the land purchase. Lenders want to see consistent income over at least two financial years, and if you're waiting for the next tax return to show stronger earnings, that delay could push your construction start date outside the lender's window.

Not all land is considered suitable by lenders

Some blocks look like a solid buy until a lender's valuer gets involved. Land on steep gradients, blocks with easements that limit building placement, or sites that need significant earthworks before construction can start often get knocked back or valued lower than the purchase price. If the valuer decides the land is worth less than you're paying, the lender reduces the loan amount accordingly, and you need to cover the difference in cash.

Rural or semi-rural blocks come with extra scrutiny. If the land is zoned for rural residential or sits outside a standard urban growth area, some lenders won't offer construction finance at all. Others will lend but at a higher interest rate or with a larger deposit requirement. Before you sign a contract on the land, check that the block meets lending criteria. That includes access to town water and sewer, road access that isn't dependent on an unmade road, and zoning that permits residential construction without additional development hurdles.

Assuming all lenders handle construction loans the same way

Some lenders allow you to act as an owner builder if you hold the right licenses and can demonstrate relevant building experience. Others won't lend to owner builders at all, even if you're a qualified tradesperson. The same applies to using an unregistered builder. Most lenders require a registered builder with appropriate insurance before they'll approve construction funding.

The way lenders assess the building contract also varies. Some accept progress payment schedules that front-load more of the cost toward early stages like slab and frame. Others require a more evenly distributed payment structure. If your builder's proposed schedule doesn't match the lender's requirements, you'll be caught between the two trying to renegotiate terms. For concreters who might be doing their own slab work or subcontracting to mates in the trade, that can create issues if the lender sees a conflict of interest or questions whether the progress inspections will be independent. Having access to construction loan options from banks and lenders across Australia means you're not stuck with one lender's interpretation of how the job should be funded.

Another difference is how lenders handle cost overruns. If the build runs over budget due to site conditions or material price increases, some lenders allow you to request additional funds as long as the property value still supports the higher loan amount. Others cap the loan at the original approval and leave you to cover the extra costs. That's worth clarifying before you commit, because a $10,000 overrun on a $300,000 build isn't unusual, and finding that cash mid-construction is harder than planning for it upfront.

Funding land and construction separately creates complexity that doesn't exist when you're buying an established house. The structure works, but only if you understand how progressive drawdown operates, what lenders expect in terms of timing and documentation, and where the cash flow pressure points sit. For concreters used to working on commercial or residential projects with staged payments, the logic isn't foreign, it's just applied to your own build instead of someone else's.

Call one of our team or book an appointment at a time that works for you. We'll look at your situation, match it to lenders who handle construction finance for tradies, and make sure the land you're buying actually stacks up for the build you're planning.

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