Everything You Need to Know About Multi-Unit Development Finance

Building multiple dwellings on a single site requires a different financing structure than a standard home loan.

Development finance for multi-unit projects operates on a progressive drawdown basis, where funds release at specific construction milestones rather than as a lump sum upfront. Lenders assess both the land value and the completed development value, and they'll only charge interest on the amount drawn down at each stage, not the total approved loan amount. The structure reflects the staged risk profile of the project and the cash flow needs of builders and sub-contractors.

How Multi-Unit Construction Funding Differs From Standard Home Loans

Standard home construction loans release funds across four to six stages. Multi-unit development finance can involve 10 or more draw points depending on project complexity.

Consider a dual occupancy project in Templestowe where the build involves two separate dwellings on a subdivided block. The lender structures the draw schedule around key milestones for each dwelling plus shared site costs. Initial draws cover demolition and site preparation, then foundation and slab for both units, followed by separate frame and lock-up stages for each dwelling. Because the builder needs to coordinate multiple trades across two structures, the cash flow requirements differ significantly from a single home build. The progressive drawdown matches these cash flow needs while limiting the lender's exposure until each milestone is verified through a progress inspection.

The construction loan application process for multi-unit projects requires council plans, a development application approval, fixed price building contract, and a detailed cost breakdown that separates site works from individual dwelling costs.

What Lenders Assess Before Approving Development Finance

Lenders evaluate the end value of the completed project, not just the land and build cost.

For a townhouse development in Doncaster, a lender will obtain a valuation that includes both 'as is' land value and 'as if complete' development value. The loan amount is determined by the lower of either 80% of the total development cost or 65-70% of the completed development value, depending on your experience and the lender's appetite for development finance. If the completed value sits at $2.4 million and total costs including land are $1.8 million, the maximum loan would typically be $1.44 million at 80% of cost. You'd need to cover the difference with cash or equity.

Lenders also examine whether you have a registered builder under a fixed price contract, whether the project has council approval and all necessary permits, and whether you've allowed contingency within the budget. Development applications that show complex site conditions or non-standard designs will attract more scrutiny and may require a larger deposit.

The Progressive Drawing Fee and How It Affects Your Budget

Most lenders charge a Progressive Drawing Fee each time funds are released during construction.

This fee typically ranges from $300 to $500 per drawdown and covers the cost of the progress inspection and the lender's internal administration. For a multi-unit project with 12 separate draw points, these fees can add $3,600 to $6,000 to your total project cost. Some lenders cap the number of included inspections and charge additional fees beyond that point, while others offer unlimited draws within a set construction period. The fee structure should be confirmed during the loan application stage and factored into your overall budget alongside other financing costs like interest during construction and settlement costs.

In our experience, buyers underestimate these cumulative fees when comparing loan offers. A lender advertising a slightly lower construction loan interest rate may charge higher drawing fees, which erodes the apparent saving over the life of the build.

Fixed Price Contracts Versus Cost Plus for Development Projects

A fixed price building contract is almost always required for lender approval on multi-unit developments.

Under a fixed price contract, the builder agrees to complete the project for a set sum regardless of cost variations, provided the scope doesn't change. This gives the lender certainty that the loan amount will cover the build. A cost plus contract, where the builder charges actual costs plus a margin, introduces uncertainty around the final loan amount and is rarely acceptable to lenders unless you're an experienced developer with substantial equity and a strong relationship with a specialist lender.

For a four-townhouse project in Bulleen, a fixed price contract might be set at $1.6 million including all site works, services, and individual dwelling construction. If material costs increase or the builder encounters unexpected site conditions covered under the contract, the builder absorbs those costs. Variations initiated by you as the owner, such as upgraded fixtures or design changes, sit outside the fixed price and require additional funding. Your finance structure needs to account for a contingency buffer to cover these potential variations without stalling the build.

How the Progress Payment Schedule Aligns With Construction Stages

The progress payment schedule in your building contract should align with the construction draw schedule from your lender.

Misalignment between what the builder expects to be paid and when your lender releases funds creates cash flow problems. If your builder's contract specifies payment at frame stage but your lender's draw schedule splits frame into separate stages for each dwelling, you'll need to negotiate either the builder's payment terms or the lender's draw structure before work begins. Some builders are willing to adjust their payment schedule to match the lender's draw points, particularly if they've worked on similar development projects before. Others hold firm to their standard terms, which may require you to fund gaps with your own capital.

We regularly see this issue with house and land packages adapted for dual occupancy, where the builder's standard contract was designed for a single dwelling and doesn't accommodate the staged funding of two separate structures on the same site.

Interest-Only Repayment Options During the Build Phase

Most construction loans for multi-unit projects operate on interest-only repayments during the build.

You're charged interest only on the funds drawn down to date, calculated daily and charged monthly. If $600,000 has been drawn after the slab stage, you pay interest on $600,000, not the full approved loan amount of $1.4 million. As further draws occur, the interest cost increases in line with the outstanding balance. This structure keeps repayments manageable during construction when you're not yet generating income from the property and may still be covering existing accommodation costs.

Once construction is complete and the final draw occurs, the loan typically converts to principal and interest repayments, though some lenders offer extended interest-only periods if you're planning to hold the dwellings as investment properties. The transition to principal and interest repayments can significantly increase your monthly obligation, so the holding strategy and cash flow should be modelled before you commence building.

Council Approval Timing and Finance Pre-Approval

You can obtain finance pre-approval before council approval is finalised, but formal loan approval is conditional on permits being in place.

A pre-approval gives you a clear understanding of your borrowing capacity and the loan structure available, which is useful when finalising your development application and negotiating with builders. However, the lender won't issue a formal loan offer or allow drawdowns to begin until you provide evidence of council approval, building permits, and a signed fixed price building contract with a registered builder. For projects in areas like Northcote or Fairfield where planning overlays and heritage considerations can extend approval timeframes, this conditional approach allows you to move forward with design and planning while finance is being arranged, without committing the lender prematurely.

Most lenders require construction to commence building within a set period from the formal approval date, typically six months. If delays push construction past this window, the loan offer may lapse and require reassessment under current lending criteria and interest rate conditions.

Choosing Between Standard Banks and Specialist Development Lenders

Major banks will fund straightforward dual occupancy and small townhouse projects, but more complex developments often require specialist lenders.

If your project involves four or more dwellings, staged subdivision, or you're acting as an owner builder, the major banks typically decline or heavily restrict their offer. Specialist development lenders operate with higher risk appetites and more flexible serviceability models, but they charge higher interest rates and often require larger deposits. For a six-unit development, a specialist lender might offer 65% of project costs at a rate 1.5% to 2% above standard variable, compared to a major bank offering 80% of a dual occupancy at standard rates.

Access to a wide panel of lenders, including both major banks and development specialists, allows you to match the right funding structure to your specific project without over-paying or under-funding. A mortgage broker with experience in development finance can assess which lender suits your project scope, experience level, and financial position before you invest time in a full application.

How Equity in Existing Property Can Fund Your Deposit

Many multi-unit developments in Melbourne are funded using equity from an existing home rather than cash savings.

If you own a property in Templestowe worth $1.2 million with a $400,000 mortgage, you have $800,000 in equity. A lender will typically allow you to access up to 80% of the property's value, which is $960,000, leaving $560,000 in usable equity after accounting for the existing mortgage. This equity can be used as the deposit and contingency buffer for your development project without requiring you to sell your home or draw down savings. The existing property is cross-secured with the development site, and both are released from security once the development is complete and either sold or refinanced.

This approach is common for buyers who want to retain their family home while building investment dwellings on a separate site. The key consideration is serviceability, as you'll be carrying interest costs on both the existing mortgage and the construction loan during the build phase. Your income needs to support both obligations, or you'll need to demonstrate that presales or a clear exit strategy will reduce the debt burden once construction is complete.

What Happens If Construction Costs Exceed the Approved Loan Amount

If costs overrun and the approved loan doesn't cover the final stages, you'll need to provide additional funds to complete the build.

Lenders won't increase the loan amount mid-construction unless the overrun is due to a formal variation that increases the end value of the project and a new valuation supports the higher loan amount. Unplanned cost blowouts due to builder delays, unforeseen site conditions not covered by the contract, or poor budget planning must be funded by the borrower. This is why a contingency of 10-15% is recommended for any multi-unit project, held as accessible cash or equity rather than built into the loan amount.

In one scenario we handled, a dual occupancy project in Doncaster encountered rock during excavation, which wasn't identified in the soil test and wasn't covered under the builder's fixed price contract. The additional excavation and engineering costs added $40,000 to the build. The borrower had contingency available in offset and was able to cover the gap without delaying construction. Without that buffer, the project would have stalled at slab stage while additional funding was arranged.

Converting From Construction to Permanent Loan After Completion

Once construction is complete, most construction loans convert to a standard principal and interest home loan or investment loan.

This conversion, sometimes called a construction to permanent loan, occurs automatically once the final inspection is completed, the builder issues a certificate of occupancy, and the lender's valuer confirms practical completion. The interest rate typically transitions from the construction loan interest rate to the lender's standard variable or fixed rate, depending on what you've locked in. For multi-unit projects where you're retaining some or all dwellings as investments, you can structure the loan to split across multiple securities, allowing you to sell individual dwellings and pay down portions of the debt without refinancing the entire project.

If you're planning to sell the completed dwellings, the construction loan remains in place until settlement, at which point the sale proceeds are used to repay the loan. Some lenders charge an early repayment fee if the loan is discharged within a set period, typically 12 months, so the exit strategy should be considered when selecting the lender and loan structure.

Call one of our team or book an appointment at a time that works for you to discuss how development finance can be structured around your specific project, site, and financial position.

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