Proven Tips to Use Construction Loan Features

You Only Pay Interest on What's Been Drawn

With a construction loan, you only pay interest on the funds drawn down so far, not the full approved amount. If your loan is approved for $450,000 but only $120,000 has been released for the slab and frame, your interest repayments are calculated on that $120,000. Each time the builder reaches a stage and your lender releases the next progress payment, the balance increases and so do your repayments. This structure keeps early costs lower than they would be with a standard loan where you'd service the full amount from day one.

Most lenders offer interest-only repayment options during the construction phase, usually for six to 12 months. You're not paying down principal while the build is underway, which keeps the cash flow impact manageable when you're also covering rent or an existing mortgage. Once construction is complete and the loan converts to a standard home loan, you switch to principal and interest repayments unless you arrange otherwise.

Fixed Price Building Contract Matters More Than You'd Think

Lenders want to see a fixed price building contract before they'll approve construction finance. This contract locks in the total build cost, which protects both you and the lender from budget blowouts. Without it, the lender has no certainty that the approved loan amount will cover the full project, and you're left exposed if costs escalate halfway through.

Consider a FIFO electrician arranging a land and construction package in the northern suburbs of Perth. The builder quotes $380,000 for the build on a fixed price contract, with council approval already in place. The lender assesses the contract, confirms the registered builder has the right insurance and licensing, and approves the loan with a progressive drawdown schedule tied to five stages: base, frame, lock-up, fixing, and completion. Because the price is fixed, the lender knows exactly how much will be drawn at each stage, and the borrower knows there won't be surprise costs unless they change the scope themselves. That certainty is why lenders insist on it.

The Progressive Drawing Fee Adds Up

Each time your builder requests a progress payment and the lender releases funds, most lenders charge a progressive drawing fee. This usually sits between $200 and $400 per drawdown. Over five or six drawdowns, that's $1,000 to $2,400 in fees on top of your other borrowing costs. It's not huge, but it's often overlooked when budgeting for a build.

Some lenders waive or reduce this fee for certain loan products, and others bundle it into the loan amount rather than requiring upfront payment. If you're comparing construction loans for FIFO workers, ask how the progressive drawing fee is structured and whether it can be capitalised. When cash flow is tight during a build, every few hundred dollars matters.

Progress Inspection Determines When Funds Are Released

Your lender won't release funds just because your builder asks for them. They'll send a valuer or inspector to verify that the stage is complete and the work matches what was agreed in the contract. If the inspection shows the frame isn't finished or the plumbers haven't signed off, the payment gets held until the issue is resolved.

This protects you from paying for incomplete work, but it can delay your builder if the inspection is booked out or there's a dispute over whether a stage is truly finished. Most builders know the routine and will only submit a payment request when they're confident the stage will pass, but delays do happen, particularly if council plans required late changes or subcontractors fell behind. You won't have control over the inspection schedule, but staying in touch with your builder and lender keeps you across any timing issues before they cause friction.

Cost Plus Contract Increases Your Risk

A cost plus contract means the builder charges you for the actual cost of materials and labour, plus a margin. The total build cost isn't fixed, which means you won't know the final price until the job is done. Most lenders won't approve construction finance on a cost plus contract because the risk of a blowout is too high, and if they do, they'll often cap the loan amount well below what you'd get with a fixed price contract.

Unless you're doing a highly custom design where a fixed price isn't realistic, a cost plus contract creates uncertainty that affects both your approval and your budget. If a builder only offers cost plus terms, it's worth getting quotes from other registered builders who work on fixed price contracts, particularly if you're relying on loan approval to proceed.

Interest Rate Structure Through Construction and Beyond

During construction, most lenders charge interest at a variable rate, even if you plan to fix your rate once the build is complete. The reason is practical: your loan balance is changing every few weeks as progress payments are made, and a fixed rate doesn't accommodate that kind of movement. Once construction is finished and your loan converts to a standard home loan, you can lock in a fixed rate if that suits your situation.

Some lenders offer a construction to permanent loan structure, which means you don't need to reapply or go through a second approval once the build is done. The loan automatically rolls over into the ongoing mortgage with the rate and terms you agreed upfront. Others treat construction as a separate phase and require a new application when the house is complete. The first option is usually smoother for FIFO workers, particularly if your roster or income structure has changed between approval and completion.

You'll Need to Commence Building Within a Set Period

Most construction loan approvals include a condition that you must commence building within a set period from the disclosure date, usually three to six months. If you don't start within that window, the approval lapses and you'll need to reapply. This deadline exists because lenders base their approval on current land values, income, and interest rates, and those can shift significantly over time.

If you're waiting on council approval or your builder has a long lead time, make sure the lender knows before you accept the formal approval. Some will extend the commencement period if there's a documented reason for the delay, but others won't. Missing the deadline doesn't just mean reapplying, it means the lender will reassess everything from scratch, including your income, debts, and the property value.

Land and Build Loan Combines Two Transactions

If you're buying suitable land and building separately rather than going through a house and land package, you'll need a land and build loan that covers both the land purchase and the construction. The land component settles first as a standard purchase, and then the construction loan activates once you're ready to start building.

In our experience, this structure works well for FIFO workers who want to secure a block in a specific location and then take time to finalise their design and builder. The lender assesses both the land value and the proposed build cost upfront, so you know your full borrowing capacity before committing to either. You'll need development application approval or at least confirmation from council that the land is suitable for the type of build you're planning, otherwise the lender won't proceed. For advice on how your borrowing capacity is calculated across both components, it's worth speaking with someone who understands how FIFO income is assessed.

Owner Builder Finance Is Hard to Get

If you're planning to act as an owner builder and manage the construction yourself, most mainstream lenders won't approve construction finance. The reason is straightforward: lenders assess risk based on whether the builder is licensed, insured, and has a track record of completing projects on time and on budget. When you're the builder, those protections don't exist, and the lender has no recourse if the build stalls or goes over budget.

A few specialist lenders will consider owner builder finance, but they'll require a much larger deposit, often 30% or more, and they'll want evidence that you have genuine building experience and all the required permits. Unless you've done it before or you're in the trades yourself, getting approval is an uphill fight. For most FIFO workers, using a registered builder on a fixed price contract is the only realistic path to securing construction funding.

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