Avoid These 5 Mistakes with Construction Loan Drawdowns

You only pay interest on what you've actually drawn down, not the full loan amount from day one.

That's the advantage of construction finance over a standard home loan, but only if the drawdown schedule matches the actual pace of your build. Get that timing wrong and you're paying interest on money sitting unused, or worse, scrambling to cover costs the bank won't release yet because your progress inspection didn't tick the right boxes.

Erina's building market has picked up over the past year, with blocks around Erina Heights and The Grange seeing steady activity. Council approval times through Central Coast Council can vary, and plenty of builders are booked out months in advance. That means your drawdown schedule needs to account for real-world delays, not the optimistic timeline your builder put in the initial quote.

Linking Drawdowns to a Fixed Price Building Contract That Doesn't Match Reality

Your drawdown schedule should align with your builder's progress payment schedule, not the other way around. Most lenders structure construction funding around five or six stages: base, frame, lockup, fixing, and practical completion. Your builder invoices at similar milestones, but the percentages don't always line up.

Consider someone building a custom design home on a sloping block near Erina Fair. The builder's contract listed a 10% deposit, then 15% on base, 25% on frame, 25% on lockup, 15% on fixing, and 10% at completion. The lender's drawdown schedule, however, released 20% at base and only 20% at frame. That meant the builder was owed 5% more at base than the bank released, and the owner had to cover the gap from savings. Over a $600,000 build, that's $30,000 out of pocket until the next stage.

Before you sign anything, compare the builder's invoice schedule with the lender's proposed drawdown percentages. If they don't match, either negotiate with the builder to adjust the payment terms or talk to your broker about a lender with more flexible staging.

Underestimating Progress Inspection Delays and the Impact on Payment Timing

Lenders require a progress inspection before releasing each drawdown. An independent valuer visits the site, checks the work completed, and signs off that the stage is done. That process adds time, and if the valuer finds incomplete work, the drawdown gets delayed until the builder fixes it.

In our experience, inspections can add anywhere from a few days to two weeks between when the builder invoices and when the funds actually hit their account. Some builders are fine with that lag, others aren't. If your builder expects payment within seven days of invoicing and the bank takes ten days to release funds after inspection, you're either paying late fees or covering it yourself temporarily.

Plumbers, electricians, and other sub-contractors don't wait for banks. They invoice the builder, the builder pays them, and the builder then invoices you. If your drawdown is delayed because the progress inspection found the tiling wasn't finished or the frame wasn't fully braced, the builder's cash flow takes a hit. Some builders will absorb that, others will pass the frustration along to you.

Not Accounting for Council Plans and Development Application Timing in Your Loan Approval Conditions

Most construction loan approvals come with a condition that you must commence building within a set period from the disclosure date, usually six or twelve months. If you're still waiting on council approval or finalising plans when that clock runs out, the approval expires and you start again.

Central Coast Council's development application process can take anywhere from a few weeks to several months, depending on the complexity of the design and whether neighbours lodge objections. If you're building in a bushfire-prone area around Erina or a block with significant slope, expect additional requirements and longer approval times.

The timing works like this: you submit plans, council reviews, you make adjustments, council approves, builder finalises the contract, lender releases funds for the land purchase or first drawdown. If any step in that sequence takes longer than expected, your loan approval can lapse before construction even starts. Some lenders are flexible with extensions, others aren't.

Before applying for a construction loan, confirm with your builder and draftsperson how long they expect council plans to take. Factor in at least an extra month beyond their estimate. If you're buying a house and land package, the developer usually handles approvals, which can speed things up, but you're still tied to their timeline.

Assuming Interest-Only Repayments During Construction Mean Zero Out-of-Pocket Costs

During the build, most lenders offer interest-only repayment options, which means you're only paying interest on the amount drawn down so far, not the full loan amount. That keeps repayments low while the house is being built, but it doesn't mean you're paying nothing.

If you've drawn down $300,000 at current variable rates, you're still looking at somewhere around $1,200 to $1,500 per month in interest payments, depending on the lender. That's manageable for some people, but if you're also paying rent or covering a mortgage on your existing home, it adds up quickly.

Some lenders also charge a progressive drawing fee each time funds are released, usually between $150 and $400 per drawdown. Over five or six stages, that's another $1,000 to $2,000 in costs that don't go toward the build itself. Not every lender charges this fee, so it's worth comparing options before locking in.

Choosing a Cost Plus Contract Without Understanding How It Affects Loan Approval and Drawdowns

A cost plus contract means the builder charges you the actual cost of materials and labour, plus a margin, rather than a fixed price. It gives you more control over finishes and changes, but most lenders won't touch it because there's no cap on the final price.

Lenders prefer fixed price building contracts because they know exactly how much they're funding. With a cost plus arrangement, the build could end up costing $50,000 more than the original estimate, and the lender has no way to assess that risk upfront. A handful of lenders will consider cost plus contracts for owner builder finance or if you're using a registered builder with a strong track record, but expect higher scrutiny and possibly a larger deposit requirement.

If you're set on a cost plus contract, talk to your broker before signing anything with the builder. You might need to provide a detailed breakdown of estimated costs and lock in a maximum price the lender will fund, with any overruns coming out of your pocket.

Building a new home in Erina gives you the chance to design exactly what you want, whether it's a custom home on a block near Terrigal Drive or a project home in one of the newer estates. Getting the progressive drawdown structure right from the start means fewer surprises, fewer out-of-pocket costs, and a smoother process from slab to handover.

Call one of our team or book an appointment at a time that works for you. We'll compare construction loan options from banks and lenders across Australia and match the funding structure to your builder's payment schedule, not the other way around.

Frequently Asked Questions