Simple hacks to secure construction finance

Building a custom home means you need a lender who releases funds in stages as your builder completes each phase.

Most professionals we work with are surprised to learn that construction finance works completely differently to a standard home loan. Instead of receiving the full loan amount upfront, funds are released progressively as your registered builder hits agreed milestones. You only pay interest on what's been drawn down, not the total loan amount. That structure protects both you and the lender, but it also means the application process involves more documentation and a longer approval timeline than you might expect.

Why Construction Loans Release Funds in Stages

Lenders release funds progressively because the property you're borrowing against doesn't exist yet. A construction to permanent loan typically involves five or six drawdowns tied to specific building stages: slab down, frame up, lockup, fixing, and practical completion. Your builder submits a claim at each stage, the lender arranges a progress inspection, and once the work is verified, the funds are released. Between drawdowns, you pay interest only on the amount drawn down so far, which keeps your repayments lower during the build.

Consider a medical professional purchasing suitable land for around the current median in a growth corridor, then building a custom design home with a fixed price building contract of $650,000. At slab stage, the lender might release $130,000. Until frame stage, you're only paying interest on that $130,000 plus the land loan, not the full $650,000. Once the frame is up and inspected, another $195,000 is drawn, and your interest adjusts accordingly. This continues until practical completion, when the loan converts to a standard home loan with principal and interest repayments.

Fixed Price Contracts and Why Lenders Require Them

Most lenders will only approve construction funding if you have a fixed price building contract with a registered builder. That contract locks in the total cost and sets out a clear progress payment schedule, which gives the lender certainty that the project won't blow out halfway through. A cost plus contract, where the builder charges materials at cost plus a margin, introduces too much uncertainty for most lenders to accept.

Your contract should include a start date and a requirement to commence building within a set period from the disclosure date, usually six months. If your builder delays beyond that window, some lenders will reassess the loan or require a new valuation. The contract also needs council approval and a development application already lodged or approved, depending on the lender's policy. Without these documents in place, your construction loan application won't progress past the initial assessment.

How the Progress Payment Schedule Lines Up with Drawdowns

Your builder's progress payment schedule and the lender's progressive drawdown schedule need to match. Builders typically expect payment at five or six stages, and lenders structure their drawdowns around the same milestones. The timing matters because your builder won't continue to the next stage until they're paid, and the lender won't release funds until the current stage is inspected and signed off.

In our experience, delays happen when the progress inspection reveals incomplete work or when council sign-off takes longer than expected. That can leave your builder waiting for payment and you waiting for the lender to release the next drawdown. Building in a two-week buffer between stages helps, but the schedule is tighter than most people anticipate. If you're managing trades yourself as an owner builder, the coordination becomes even more involved, and many lenders either won't offer owner builder finance or will require a higher deposit and more detailed project documentation.

What Happens to Interest Rates During the Build

During construction, you'll typically be on a variable construction loan interest rate for the interest-only repayment period. Some lenders offer the option to fix part of the loan once it converts to a standard home loan after practical completion, but most don't allow you to lock in a fixed rate during the building phase itself. That's because the loan amount changes every time a new drawdown is made, and fixed rates require a set loan balance.

Once your home reaches practical completion and the final drawdown is made, the loan converts to a construction to permanent loan. At that point, you can choose a variable rate, a fixed rate, or a split between the two, and you'll switch from interest-only repayments to paying down both principal and interest. The conversion is usually automatic, but it's worth confirming the rate and repayment structure with your mortgage broker a few weeks before completion so there are no surprises.

Progressive Drawing Fees and Other Costs to Budget For

Lenders charge a progressive drawing fee each time they arrange an inspection and release funds. That fee is usually between $300 and $500 per drawdown, and over five or six stages, it adds up. Some lenders cap the total fee, others don't. You'll also need to budget for council fees, building insurance from the day construction starts, and any additional payments your builder requires outside the main contract, such as site costs or upgrades to fixtures.

If you're building a house and land package through a project home builder, some of these costs are bundled into the contract, but if you're working with a custom builder on your own land, you'll need to manage each expense separately. A land and construction package can sometimes include a single loan that covers both the land purchase and the build, which simplifies the process but may come with a higher interest rate during construction.

Applying for Construction Finance as a Medical Professional

Medical professionals often have access to Construction Loan options from banks and lenders across Australia that offer higher borrowing capacity, lower deposit requirements, or waived lender's mortgage insurance. These benefits apply to construction loans just as they do to standard home loans, but you'll still need to meet the lender's construction-specific criteria: a fixed price contract, a registered builder, council plans, and a clear timeline.

Your borrowing capacity is assessed based on your income at the time of application, but because you're not making full repayments during the build, lenders will also factor in what your repayments will be once the loan converts. If you're planning to build your dream home while still renting or living elsewhere, you'll need to show you can service both your current housing costs and the future loan repayments. That's where working with a renovation Finance & Mortgage Broker familiar with medical professionals can make a real difference, because they know which lenders assess serviceability more flexibly and which ones will count your future income from upcoming contracts or partnerships.

When to Start the Application Process

You should apply for construction finance before you sign the building contract, not after. Lenders need to review the contract, the plans, and the builder's credentials before they'll issue formal approval. If you sign the contract first and then discover the lender won't accept your builder or your deposit is too small, you're stuck renegotiating or walking away.

The application process typically takes three to four weeks longer than a standard home loan because the lender's credit team needs to assess the builder, the contract, the land title, and the construction timeline. Once you have formal approval, you'll usually have 90 days to settle on the land and another six months to commence building. If your builder isn't ready to start within that window, you may need to extend the approval or reapply, which can mean updated valuations and income verification.

If you're ready to build and want to understand how the draw schedule, contract structure, and loan conversion will work for your situation, call one of our team or book an appointment at a time that works for you.

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