Unlock the secrets to Construction Loan Structures

A construction loan releases funds progressively as your build reaches specific milestones, not as a lump sum at settlement.

This structure protects both you and the lender by ensuring money is only paid when work is verified, but it also means your borrowing capacity, repayment obligations, and interest costs change throughout the project. Understanding how the drawdown schedule aligns with your building contract, what costs you cover upfront, and when interest starts accruing is central to managing cash flow from demolition through to final inspection.

For buyers in South Yarra considering knock-down rebuilds or architect-designed homes on premium sites near Toorak Road or Fawkner Park, the structure you choose influences how quickly builders can progress, whether you can hold your existing property during construction, and how smoothly the transition from construction to a standard home loan occurs once the certificate of occupancy is issued.

How Construction Loan Drawdowns Are Released

Funds are released in stages based on a progress payment schedule tied to physical milestones, not calendar dates. A typical schedule includes draws at slab, frame, lock-up, fixing, and practical completion. The lender arranges a progress inspection before each payment, and funds are transferred to the builder once the stage is verified. You only pay interest on the amount drawn down at any point, which means your repayment obligation increases as the build progresses.

Consider a buyer building a two-storey residence in South Yarra with a total loan amount of $1,200,000. At slab completion, the lender releases 15% or $180,000. Interest accrues only on that $180,000 until the next draw at frame stage, when an additional $240,000 is released and the interest calculation adjusts to $420,000. The structure keeps your repayments lower during the early stages, but you need to budget for those increases as each milestone is reached and the outstanding balance grows.

Fixed Price Building Contracts and Their Impact on Loan Approval

Lenders require a fixed price building contract with a registered builder before approving construction finance. This contract sets out the total build cost, the progress payment schedule, and the timeframe for completion. Without a fixed price, the lender has no certainty about the final loan exposure, and your application will not progress. Cost plus contracts, where the builder charges for materials and labour as incurred, are not accepted by most lenders because the total cost remains undefined.

The contract also needs to align with the lender's standard drawdown stages. If your builder proposes a payment schedule that doesn't match the lender's requirements, the broker will work with both parties to adjust the structure before lodging the application. In South Yarra, where many buyers engage boutique builders for custom homes, ensuring the contract meets lender expectations from the outset avoids delays once council approval is finalised.

Land and Construction Packages vs Separate Land Purchase

A land and construction package bundles the land purchase and build under a single approval, often through a project home builder offering house and land packages in growth areas. In South Yarra, most construction projects involve land already owned or purchased separately, followed by a standalone construction loan application. The structure is different because the land is either unencumbered or subject to an existing mortgage that needs to be refinanced or held during the build.

If you own the land outright, the construction loan is secured against both the land and the work in progress. If you have an existing mortgage, you can refinance into a construction loan that consolidates the land debt and the new build, or structure it so the land loan remains separate and the construction funding sits alongside it. The second option is less common but can be relevant if your existing land loan has a lower rate or features you want to retain.

Construction to Permanent Loan Transitions

Most construction loans convert automatically to a standard variable or fixed home loan once the build is complete and the certificate of occupancy is issued. During construction, repayments are typically interest-only on the drawn balance. After conversion, the loan switches to principal and interest repayments based on the full amount, and you can select your ongoing rate structure and features at that point.

The conversion happens without needing to submit a new application, but the lender will reassess your income and liabilities to confirm you can service the full loan on a principal and interest basis. If your circumstances have changed since the original approval, such as a reduction in income or an increase in other debts, the conversion may require additional documentation or adjustment. This is why brokers structure the initial approval with enough buffer to accommodate the higher repayment once the loan converts, rather than approving at the edge of your capacity based solely on the interest-only period.

Managing Cash Flow and Upfront Costs During Construction

You are responsible for costs that fall outside the building contract, including council and utility connection fees, soil tests, engineering reports, and in some cases, the initial deposit to the builder. These are not covered by the construction loan drawdown and need to be paid from your own savings. In South Yarra, where site constraints or heritage overlays may require additional reports or variations, upfront costs can range from $20,000 to $40,000 depending on the complexity of the development application and the existing services on the site.

Lenders also charge a Progressive Drawing Fee for each inspection and payment, typically $300 to $400 per stage. Over five or six draws, this adds another $2,000 to $2,500 to the total project cost. These fees are disclosed in the loan documents but are sometimes overlooked when buyers calculate their cash requirements, and they are not capitalised into the loan, so they must be paid as the draws occur.

When Owner Builder Finance Is Structured Differently

Owner builder finance follows the same progressive drawdown model, but lenders apply stricter criteria because the construction risk is higher without a registered builder managing the project. You need an owner builder permit, detailed cost breakdown, evidence of trades already engaged, and in most cases, a larger deposit. The loan amount is typically capped at 80% of the land and construction value, compared to 90% or 95% available with a registered builder and fixed price contract.

Drawdowns are still tied to milestones, but the lender may require more detailed progress inspections or third-party certifier reports before releasing funds. Interest rates on owner builder construction loans are often higher than standard construction finance, and fewer lenders participate in this segment. If you are managing the build yourself on a South Yarra site, expect the approval process to take longer and the funding structure to be more conservative than it would be with a builder-led project.

Renovation Finance and How It Differs from New Builds

Renovation finance for substantial works such as second-storey additions, internal reconfigurations, or heritage restorations in South Yarra is structured similarly to construction loans, with progressive drawdowns tied to stages of work. The difference is that you continue living in the property or holding it as an investment while the work is completed, and the loan is secured against the existing dwelling plus the value being added through the renovation.

Lenders assess renovation applications based on the scope of work, the builder's contract, and the expected value on completion. If the renovation includes structural changes or requires council approval, the loan will not be released until those permits are finalised. For less extensive works that do not require progressive payments, a standard home improvement loan structured as a single drawdown may be more appropriate than a full construction facility.

Call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions