Multi-Unit Development Site Finance & What to Expect

Financing a multi-unit development site sits somewhere between a standard land purchase and a full construction project. You're buying land with the intention to build multiple dwellings, and lenders treat this differently to owner-occupied construction because the risk profile changes when you move from one home to several units.

The approval process focuses heavily on the feasibility of your development. Lenders want to see that the numbers work before they commit funding, which means you'll need more than just a signed contract and a deposit. They'll assess the site's zoning, your experience as a developer or builder, the project's end value, and whether the rental or sale income justifies the loan amount. If you're new to development, expect tighter conditions and potentially a requirement to engage a registered project manager.

How Construction Finance Differs for Multi-Unit Sites

A construction loan for a multi-unit development operates on a progressive drawdown basis, but the structure is more complex than a single dwelling build. Instead of funding one set of progress payments, the lender releases funds across multiple stages that align with the completion of foundations, framing, lock-up, and final completion for the entire development, not individual units.

You'll typically only be charged interest on the amount drawn down at each stage, which helps manage cash flow during the build. The lender will require a quantity surveyor's report and a detailed cost breakdown before settlement. Most lenders also impose a Progressive Drawing Fee for each inspection and drawdown, which can add several hundred dollars per stage. If your development involves four units and six drawdown stages, that's 24 individual inspections and associated fees across the project.

Consider a scenario where a buyer purchases a 1,200-square-metre block in Mount Eliza zoned for multi-unit residential. The site allows four two-bedroom units under the local planning scheme. The buyer engages a registered builder on a fixed price building contract and applies for construction finance. The lender approves the loan based on a quantity surveyor's report showing projected end values that exceed total project costs by 20%. During construction, funds are released at six stages: base stage, frame stage, lock-up, fixing stage, practical completion, and final completion. At each stage, the builder submits invoices, the lender arranges a progress inspection, and funds are released directly to the builder within five business days of approval.

What Lenders Assess During the Application

Lenders evaluate development applications differently to standard home loans. They'll request a development application or at minimum, evidence that the site is zoned for the intended use and that council approval is either granted or likely. If you're purchasing the land before lodging plans, expect the lender to impose conditions requiring council plans to be submitted within a set period from the settlement date.

Your experience matters. If you've completed previous developments, provide evidence of those projects including final sale prices or rental yields. If this is your first development, lenders may require a larger deposit or limit the loan amount to a lower percentage of the project's end value. Some lenders will only offer development finance to applicants who can demonstrate prior building or project management experience, while others will proceed if you're using a registered builder and a fixed price contract.

The cost plus contract versus fixed price distinction is significant. A fixed price building contract gives the lender certainty around total project costs, which makes approval more likely. A cost plus contract introduces variability, and many lenders will either decline or apply a higher interest rate to account for the risk of cost overruns. The progress payment schedule must align with the lender's drawdown stages, so your builder needs to be willing to structure invoicing around the lender's requirements rather than their preferred payment terms.

How the Progressive Payment Schedule Works

The progress payment finance structure is tied to verified completion of each stage. Your builder can't simply invoice for the next stage and expect funds to be released. The lender will send a valuer or building inspector to the site, and that inspector will confirm the work matches the stage claimed. If the builder has invoiced for lock-up but the inspector finds that external cladding is incomplete, the drawdown won't proceed until the work is finished.

This creates timing pressure. Builders often need to pay sub-contractors before the next stage is fully complete, which means they're carrying costs while waiting for the inspection and drawdown to process. If your builder is working on thin margins, this can cause tension. Some builders will include a clause in the contract requiring you to cover any interest they incur due to delayed drawdowns, so read the building contract carefully before signing.

Renovation projects involving multiple units follow a similar process. If you're purchasing an older block of units in Mount Eliza and planning a substantial renovation that increases the number of dwellings, lenders will treat it as a development loan rather than a standard [home improvement loan](). The same progressive drawdown applies, and you'll need detailed plans, council approval, and a registered builder before the loan can settle.

Deposit Requirements and Genuine Savings

Most lenders require a deposit of at least 20% to 30% of the total project cost for multi-unit development finance. Total project cost includes the land purchase price, construction costs, professional fees, council fees, and lender fees. If the land costs are substantial relative to the build cost, some lenders will assess the deposit against land value alone and then assess the construction loan separately, but this is less common for small-scale developments under six units.

Genuine savings still apply. If you're contributing a 25% deposit, lenders want to see that a portion of that deposit has been held in your account for at least three months. Gifted deposits are rarely accepted for development finance unless you're an experienced developer with multiple completed projects. Equity from an existing property can be used, but the lender will apply a conservative valuation to that property and limit the amount you can access based on their maximum loan-to-value ratio for development projects.

Interest Rates and Repayment Options During Construction

Construction loan interest rates for multi-unit developments are typically higher than standard home loans. You're looking at a margin above the lender's standard variable rate, and that margin reflects the additional risk of funding a development rather than a completed dwelling. Some lenders offer interest-only repayment options during the construction phase, which reduces your monthly commitment while the project is underway and no rental income is being generated.

Once construction is complete, most lenders will allow you to convert the construction loan to a standard investment loan if you're planning to hold and rent the units. If you're planning to sell, the lender will typically require the loan to be repaid within 12 months of practical completion or upon settlement of the unit sales, whichever occurs first. Make sure you understand the exit requirements before committing to a lender, because some construction loans include penalty clauses if the loan isn't repaid or converted within the agreed timeframe.

Owner Builder Finance and Custom Design Projects

Owner builder finance is difficult to secure for multi-unit developments. Most lenders will decline applications where the borrower is also the builder unless you hold a registered builder's licence and can demonstrate at least two completed projects of similar scale. Even then, the loan amount will be capped at a lower percentage of the project's end value, and the lender may require additional insurances or bank guarantees.

If you're proceeding as an owner builder, expect to provide a detailed project plan including timelines for each trade, evidence that you've secured fixed-price quotes from plumbers, electricians, and other sub-contractors, and proof that you can cover cost overruns from your own funds. The lender will not increase the loan amount mid-project if your costs exceed the original estimate, so budget conservatively and include a contingency of at least 10% to 15%.

Custom home finance for multi-unit sites works when you're building multiple dwellings to a custom design rather than using a project home or standard unit template. Lenders will require detailed architectural plans, a soil test, and confirmation that the design complies with local planning overlays. If your site in Mount Eliza falls within a heritage overlay or coastal management zone, expect additional conditions and potentially a requirement to provide evidence of council approval before the loan can settle.

Timing Requirements and Commencement Clauses

Most construction loans include a clause requiring you to commence building within a set period from the settlement date. This is typically six to 12 months, depending on the lender. If you purchase the land but delay lodging your development application or securing council approval, you may breach this clause and trigger a default interest rate or a requirement to repay the loan in full.

The commencement requirement is particularly relevant for multi-unit sites in areas like Mount Eliza, where planning approval can take six months or longer if objections are lodged or if the site requires detailed environmental assessments. If you're purchasing the land before plans are finalised, negotiate a longer commencement period with the lender upfront or structure the purchase so that settlement doesn't occur until after council approval is granted.

You'll need to provide regular updates to the lender during construction. Most lenders require a progress inspection report at each drawdown, and some also require quarterly updates even if no drawdown is occurring. If construction stalls for more than 60 days, the lender may freeze further drawdowns until you provide evidence that the project is back on schedule. This can create a cash flow problem if your builder walks off site or if you encounter unexpected issues like contaminated soil or heritage findings.

Call one of our team or book an appointment at a time that works for you to discuss your multi-unit development finance options and confirm what documentation your lender will require before you commit to a land purchase.

Frequently Asked Questions