A construction loan for a multi-unit development works differently to standard home finance because lenders release funds in stages as the build progresses, not as a lump sum upfront.
If you're planning a duplex, triplex, or townhouse development, the funding structure matters as much as the interest rate. You'll need council approval, a fixed price building contract, and enough equity or deposit to satisfy a lender's presale requirements. Many developers underestimate how much capital they need to hold before the first drawdown, or how progress payment schedules affect cash flow during construction.
What lenders assess before approving multi-unit construction finance
Lenders assess the project viability, your equity position, and whether you've secured the necessary council plans and development application approvals. Most require a registered builder working under a fixed price contract, along with evidence that the project will generate sufficient value to cover the loan amount once complete.
Consider a developer planning a three-townhouse project on a subdivided block. The lender asked for a quantity surveyor's report, proof of council approval, and presale contracts for at least one of the three units. The developer had 30% equity in the land, which satisfied the deposit requirement, but the lender also required evidence of a contingency buffer for cost overruns. The loan was structured with interest-only repayment options during construction, with principal and interest repayments commencing after practical completion.
How the progressive drawdown works during construction
Funds are released in instalments tied to construction milestones such as base stage, frame stage, lock-up, and practical completion. You only pay interest on the amount drawn down at each stage, not the full loan amount.
The builder submits progress claims to the lender, which arranges a progress inspection before releasing each payment. Most lenders charge a Progressive Drawing Fee or Progressive Payment Schedule fee for each inspection and drawdown, typically between $300 and $600 per stage. If the builder requests payment for the frame stage but the inspector finds the work incomplete, the drawdown is delayed until the issue is resolved. This can create cash flow pressure if the builder or sub-contractors such as plumbers and electricians are waiting for payment.
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Council approval and the timeline to commence building
Most construction loans require you to commence building within a set period from the Disclosure Date, often six to twelve months. If council approval is delayed or you can't start on time, the loan offer may lapse and you'll need to reapply.
In our experience, developers working on multi-unit projects in growth corridors sometimes secure finance before finalising their development application, assuming council approval will follow quickly. If the approval process drags beyond the lender's timeframe, the rate and terms originally offered may no longer apply. Locking in a construction loan interest rate before council plans are stamped introduces risk, particularly in areas where planning conditions can change between application and approval.
Cost plus contracts versus fixed price building contracts
Lenders prefer fixed price building contracts because they provide certainty on the final build cost. A cost plus contract, where the builder charges for materials and labour plus a margin, introduces uncertainty that makes it harder to assess loan serviceability and project risk.
Some developers prefer cost plus arrangements for custom design projects where the scope might change during construction, but this structure rarely suits construction finance for multi-unit developments. If the build cost blows out under a cost plus contract, the lender won't automatically increase the loan amount. You'll need to fund the difference from your own resources or negotiate a variation, which delays progress payments and completion.
How interest-only repayments work during the construction phase
You pay interest only on the funds drawn down at each stage, calculated daily and charged monthly. Once construction is complete, the loan typically converts to principal and interest repayments, either automatically or after a short interest-only period.
If $200,000 has been drawn for the base and frame stages, you're charged interest on that amount, not the total approved facility. As additional drawdowns occur for lock-up, fixing, and practical completion, the interest charge increases. Some borrowers assume they can make additional payments during construction to reduce the balance, but most construction loans don't allow this flexibility until the loan converts to a standard home loan structure after completion.
Presale requirements and how they affect your borrowing capacity
Lenders often require a percentage of units to be presold before approving finance for multi-unit developments, particularly if you're not an experienced developer. This reduces their risk and demonstrates market demand for the finished product.
A developer planning four townhouses was required to presale two units with unconditional contracts before drawdown could begin. The presale contracts provided certainty on exit strategy and helped the lender assess projected returns. Without those presales, the loan amount offered would have been lower, requiring the developer to inject more equity or scale back the project.
What happens if you're building as an owner builder
Owner builder finance is harder to secure for multi-unit projects because lenders see higher construction risk when a registered builder isn't managing the build. You'll need significant construction experience, trade qualifications, and a higher deposit to qualify.
Most lenders won't fund owner builder developments beyond a single dwelling or granny flat unless you can demonstrate a track record of completed projects. Even then, the loan amount is typically capped at a lower loan-to-value ratio, and the progress payment schedule may require more frequent inspections at your cost.
When a construction to permanent loan makes sense
A construction to permanent loan transitions automatically from construction funding to a standard home loan once the build is complete, avoiding the need to reapply or refinance. This structure works well if you plan to hold one or more units as investment property rather than selling immediately.
If you're developing a duplex and planning to live in one unit while renting the other, a construction to permanent loan lets you move straight into principal and interest repayments without triggering a new application. You'll need to meet the lender's serviceability requirements for the final loan amount, which means your income and expenses are assessed as if the full loan is already drawn.
How land and construction packages differ from buying land separately
A land and construction package bundles the land purchase and build contract into a single finance application, which can speed up approval and reduce upfront costs. However, these packages are less common for multi-unit developments because the land is often already owned or purchased separately before the development application is lodged.
If you're buying suitable land specifically for a multi-unit project, some lenders offer a land and build loan that covers both the purchase and construction in one facility. The land component is drawn at settlement, and the construction funding follows the usual progressive drawdown. This approach works if you've already secured council approval or have a clear path to DA approval before settlement.
Call one of our team or book an appointment at a time that works for you to discuss how construction finance can be structured for your multi-unit development. We work with lenders across Australia who understand progress payment finance and can tailor a solution to your project timeline and equity position.
Frequently Asked Questions
How does a construction loan work for a multi-unit development?
A construction loan releases funds in stages as the build progresses, tied to milestones such as base, frame, lock-up, and completion. You only pay interest on the amount drawn down at each stage, not the full loan amount upfront.
Do I need presales before a lender will approve finance for a townhouse development?
Many lenders require a percentage of units to be presold, particularly if you're not an experienced developer. This reduces their risk and demonstrates market demand for the finished product.
What is the difference between a fixed price contract and a cost plus contract?
A fixed price contract sets a total build cost upfront, which lenders prefer because it provides certainty. A cost plus contract charges for materials and labour plus a margin, introducing uncertainty that makes approval harder and limits your ability to manage cost overruns.
Can I use a construction loan if I'm building as an owner builder?
Owner builder finance is harder to secure for multi-unit projects because lenders see higher risk. You'll need significant construction experience, trade qualifications, and a higher deposit to qualify, and the loan amount will typically be capped at a lower ratio.
What happens if council approval is delayed after I secure a construction loan?
Most construction loans require you to commence building within six to twelve months from the Disclosure Date. If council approval is delayed beyond that period, the loan offer may lapse and you'll need to reapply, potentially at a different rate.
