Top tips to secure lower construction loan rates

Construction finance rates can vary widely between lenders, and the structure you choose directly affects how much interest you'll pay over the build period.

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Understanding Construction Loan Rates in the Current Market

Construction loan rates typically sit higher than standard home loan rates because lenders take on additional risk during the building phase. At current variable rates, most lenders price construction funding between 0.10 per cent and 0.50 per cent above their standard owner-occupier home loan products, with the exact margin depending on your deposit size, the builder's credentials, and whether you're using a fixed price building contract.

The difference matters more than it appears. A borrower arranging construction funding in Riverstone for a house and land package will only be charged interest on the amount drawn down at each stage, not the full loan amount from day one. That progressive drawdown structure means your interest cost builds gradually as each progress payment is released. However, the rate you secure at the outset determines the compounding cost across what is often a six to twelve month build period, and those months of interest-only repayment options add up quickly if your starting rate is uncompetitive.

We regularly see clients assume that because they're only drawing funds progressively, the rate is less important than it would be on a standard loan. That's a costly misunderstanding. Consider a borrower arranging $700,000 in construction funding at a rate 0.30 per cent higher than necessary. Even with progressive drawdown, that margin can cost several thousand dollars in additional interest over a typical build, and those funds come directly out of the budget you've set aside for finishes, landscaping, or contingency.

Fixed Price Contracts Deliver Rate Advantages

Lenders price construction finance based on certainty. A fixed price building contract with a registered builder removes one of the largest variables in a construction project, and most lenders reward that certainty with a lower interest rate or reduced fees compared to cost plus contracts or owner builder finance.

In a scenario where a Riverstone buyer is building a custom design home on suitable land, the lender will assess whether the builder is licensed, whether council approval has been granted, and whether the contract clearly defines the scope, price, and progress payment schedule. If all three elements are in place and the contract is genuinely fixed price, the borrower typically qualifies for the lender's standard construction loan interest rate rather than a higher-risk pricing tier.

The gap between standard and higher-risk construction rates can be as much as 0.40 per cent depending on the lender. That difference is not trivial when you're managing progress payments over six or more months. A fixed price contract also protects you from cost overruns that would otherwise require additional funding mid-build, which almost always comes at a higher rate or through personal savings.

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How the Progressive Drawing Fee Structure Affects Total Cost

Most lenders charge a Progressive Drawing Fee each time they release funds to your builder. This fee typically ranges from $300 to $500 per drawdown, and a standard residential build involves five to six progress payments aligned with the stages set out in your contract: slab down, frame up, lock-up, fixing, and practical completion.

That fee structure means a typical build incurs between $1,500 and $3,000 in drawdown fees alone, separate from the interest rate. Some lenders bundle these fees into a single upfront amount, while others charge per inspection. The total cost of your construction funding is the combination of the interest rate, the progressive fee structure, and any valuation or application costs, and it's the combination that matters rather than any single line item.

When comparing construction loan options from banks and lenders across Australia, check whether the lender conducts its own progress inspection or relies on an independent third party. Lenders that use their own panels can sometimes process drawdowns more quickly, reducing the delay between your builder completing a stage and funds being released to pay sub-contractors such as plumbers and electricians. Speed matters in construction finance because delayed payments can slow the build, and every additional week on site extends the period you're paying interest on drawn funds.

Land and Construction Package Versus Separate Purchases

Buyers arranging a land and construction package often secure more competitive construction funding than those purchasing suitable land separately and then arranging a project home loan months later. The reason is straightforward: lenders view a coordinated package with a single settlement and a requirement to commence building within a set period from the Disclosure Date as lower risk than a staged arrangement where land sits undeveloped.

Marsden Park and Riverstone both have significant house and land packages available through volume builders, and those packages typically come with pre-negotiated construction draw schedules and fixed price contracts already in place. That standardisation allows lenders to price the construction component more competitively because the variables are known and the builder is usually on the lender's approved panel.

If you're purchasing land separately, make sure your finance structure allows you to convert from a land loan to construction funding without reapplying or paying a second round of application fees. Not all lenders offer a seamless construction to permanent loan transition, and those that do often reserve their lowest rates for borrowers who commit to both phases upfront.

Why Interest-Only Repayment Options Matter During the Build

During the construction phase, most borrowers are approved for interest-only repayment options rather than principal and interest. You're paying rent or holding costs elsewhere while the build progresses, so requiring full principal and interest repayments on funds drawn for construction would create a significant cash flow burden.

Interest-only reduces your repayment to just the interest charged on the drawn amount. As each progress payment is released and your loan balance grows, your repayment increases incrementally rather than in one large step at practical completion. Once the build is finished and you've moved in, the loan converts to a standard principal and interest home loan with repayments calculated on the full amount.

The interest rate during the construction phase directly determines those interest-only payments. A lower rate means lower holding costs while you're waiting to occupy the property, and that frees up cash flow to cover other settlement costs, council fees related to the development application, or interim accommodation. Buyers building a new home in Riverstone while living in rental accommodation particularly benefit from minimising interest costs during construction, because you're effectively paying to live somewhere else and funding the build simultaneously.

Comparing Construction Funding Across Lender Panels

Not every lender offers construction finance, and among those that do, the rates and fee structures vary significantly. The major banks tend to have the most established construction loan processes and the widest appetite for project home loan applications, but their rates are not always the most competitive. Regional lenders and non-bank specialists sometimes offer lower construction loan interest rates to win market share, but their progress payment finance processes can be slower and their appetite for custom design or owner builder projects more limited.

Access to construction loan options from banks and lenders across Australia means comparing not just the headline rate but the serviceability assessment, the progress inspection turnaround time, and whether the lender will accept your builder without requiring additional documentation. A lender that prices construction funding at 0.15 per cent below a competitor but takes three weeks per drawdown instead of one will often cost you more in delayed build time and extended interest than the rate saving delivers.

Riverstone borrowers building new home construction finance arrangements should also confirm whether the lender requires you to hold buildings insurance from slab stage or whether the builder's warranty covers the structure until practical completion. That detail affects your cost base during construction and should be factored into the total funding comparison.

What Happens When the Build Converts to Permanent Finance

Once construction reaches practical completion and you've received the occupation certificate from council, your construction loan converts to a standard home loan. This conversion is typically automatic if you've arranged a construction to permanent loan from the outset, but the interest rate on the permanent phase is not always identical to the construction phase rate.

Some lenders offer a lower ongoing rate post-construction, particularly if you're moving from interest-only to principal and interest repayments and the loan is now secured against a completed dwelling rather than a work in progress. Others keep the rate consistent across both phases. The key is to confirm at application whether the rate you've been quoted applies only during construction or continues once you've moved in, and whether any discount or offset features activate only after conversion.

Borrowers who arrange construction finance without confirming the post-construction rate sometimes find themselves on a higher standard variable rate once the build is finished, at which point refinancing becomes the most effective way to secure a better ongoing rate. Planning the exit from construction funding is as important as planning the entry, and that planning should happen before you sign the building contract and trigger the first drawdown.

When to Lock Construction Funding Before Council Approval

Most lenders will provide conditional approval for construction finance before you've received final council approval, but they won't release any funds until council plans are stamped and the development application is formally approved. If you're building a custom home on a vacant block in Riverstone, arranging your funding ahead of council approval locks in your construction loan interest rate and removes one variable from the project timeline.

Rate lock periods typically run for 90 days, which is enough time to finalise council approval in most cases, but if your development application is complex or requires additional submissions, you may need to extend the lock or reapply. Some lenders charge a fee to extend a rate lock beyond the initial period, while others allow one extension at no cost. Clarify that policy before you commit, particularly if your builder has flagged that council approval may take longer than the standard six to eight week timeframe.

Locking your rate early also protects you if the Reserve Bank raises the cash rate during your council approval period, as has occurred three times already in the current cycle. A borrower who locked construction funding in early months of the year before the February rise avoided an immediate 0.25 per cent increase in their construction loan application rate, a saving that compounds across every drawdown from slab to completion.

Call one of our team or book an appointment at a time that works for you. We'll compare construction funding across our full panel, confirm which lenders will support your builder and contract type, and make sure the structure you're arranging delivers the lowest total cost across both the build and the permanent loan that follows.

Frequently Asked Questions

How much higher are construction loan rates compared to standard home loans?

Construction loan rates typically sit between 0.10 per cent and 0.50 per cent above standard owner-occupier home loan rates, depending on your deposit, builder credentials, and contract type. The margin reflects the additional risk lenders take on during the building phase.

Do I pay interest on the full loan amount from day one of construction?

No, you only pay interest on the amount drawn down at each stage of the build. Your interest cost builds progressively as each payment is released to the builder, rather than on the full loan amount from the start.

What is a Progressive Drawing Fee and how much does it cost?

A Progressive Drawing Fee is charged each time the lender releases funds to your builder, typically ranging from $300 to $500 per drawdown. Over a standard five to six stage build, total drawdown fees usually amount to between $1,500 and $3,000.

Does a fixed price building contract affect my construction loan rate?

Yes, a fixed price contract with a registered builder typically qualifies you for a lower construction loan rate because it removes cost uncertainty for the lender. The rate difference between fixed price and cost plus contracts can be as much as 0.40 per cent depending on the lender.

What happens to my construction loan once the build is finished?

Once you receive practical completion and the occupation certificate, your construction loan automatically converts to a standard home loan if you've arranged a construction to permanent loan structure. The interest rate and repayment type may change at that point, so confirm the post-construction rate before you commit.


Ready to chat to one of our team?

Book a chat with a Mortgage Broker at KM Financial Service today.