Multi-Unit Construction Loans: What Not to Overlook

Building multiple units on one site changes how lenders assess your application and how funding is released during construction.

Most lenders treat a multi-unit development differently from a single dwelling, even if you're only building two townhouses. The loan structure, deposit requirements, and draw schedule are all affected by the number of units you're constructing. Understanding how construction finance works for multi-unit projects means you know what to prepare before you submit an application and what to expect once the build begins.

How Construction Finance Differs for Multi-Unit Builds

Construction funding for multi-unit developments is released in stages as the build progresses, not as a lump sum upfront. The lender only charges interest on the amount drawn down, which means your repayments increase as each progress payment is made. You'll typically make interest-only repayments during construction, with principal and interest repayments starting once the build is complete and the loan converts to a standard mortgage.

The number of units affects which lenders will consider your application. Some lenders cap their construction lending at two units, while others will fund up to four units as a residential loan. Anything beyond four units is usually treated as a commercial development and requires a different type of funding structure. The deposit requirement also increases with the number of units, with most lenders asking for at least 20% to 30% deposit for a duplex or triplex build.

What Lenders Assess Before Approving a Multi-Unit Construction Loan

Lenders assess your application based on the completed value of the development, not just the land and construction costs. They'll order a valuation that estimates what the finished units will be worth, either as individual dwellings or as a completed development. That valuation determines how much they're willing to lend.

You'll need council approval in place before most lenders will issue formal approval. A development application that's been submitted but not yet approved usually won't be enough. The building contract also matters. Most lenders require a fixed price building contract with a registered builder, and they'll want to see a detailed progress payment schedule that matches the construction draw schedule they're willing to fund. Cost plus contracts or owner builder arrangements are harder to fund for multi-unit projects, and many mainstream lenders won't consider them at all.

Your income also gets more scrutiny. If you're planning to sell one or more units on completion to reduce the loan, some lenders will factor in the projected sale proceeds when assessing serviceability. If you're keeping all units as rentals, they'll assess your ability to service the full loan amount using your current income plus the estimated rental income from the completed units.

Construction Draw Schedules and Progressive Payment Structures

The construction draw schedule controls when funds are released during the build. For multi-unit developments, the schedule is usually tied to key milestones such as slab down, frame up, lock-up, fixing stage, and practical completion. Each time the builder reaches a milestone, they request a progress payment. The lender arranges a progress inspection to confirm the work has been completed to that stage, then releases the next drawdown.

Most lenders charge a Progressive Drawing Fee each time they release funds, typically between $300 and $500 per drawdown. If your build has six or seven progress payments, those fees add up. Some lenders cap the number of drawdowns they'll fund, which means your builder's progress payment schedule needs to align with what the lender is willing to release.

Consider a member of Victoria Police building a duplex in Werribee. The land cost is covered upfront, and the construction contract is set at a fixed price with six progress payments. The lender agrees to fund the build based on a seven-stage draw schedule, including an initial deposit to the builder and six progress payments. Each drawdown is inspected before release, and the borrower pays interest only on the total amount drawn down at that point. Once both units reach practical completion, the loan converts to a standard investment loan with principal and interest repayments, and the rental income from both units is used to service the debt.

How Interest Accumulates During the Build

Interest accrues only on the amount drawn down, not the full approved loan amount. At the start of construction, you might only have drawn down 10% to 20% of the total loan, so your repayments are relatively low. As each progress payment is released, the drawn balance increases and so do your repayments.

Some lenders allow you to capitalise the interest during construction, which means the interest charges are added to the loan balance rather than paid out of pocket each month. That can help with cash flow during the build, but it increases the total debt you'll carry once construction is complete. Other lenders require you to make interest payments as they fall due, which keeps the loan balance lower but requires more cash on hand during the build.

If the build takes longer than expected, you'll pay interest for a longer period. Most construction loans for police officers allow for a build period of 12 to 18 months, but delays with council inspections, materials, or subcontractors can extend that timeframe. Lenders don't usually charge extra fees if the build runs over, but your interest costs will be higher the longer the construction period lasts.

When Owner Builder or Spec Build Structures Are Considered

Most lenders require a registered builder and a fixed price contract for multi-unit developments. Owner builder finance is available, but fewer lenders offer it and the deposit requirement is usually higher. If you're planning to act as owner builder, expect to need at least 30% deposit and be prepared to provide detailed costings and a project timeline.

Spec builds, where you construct the units without a pre-sale in place, are treated differently again. Some lenders will fund a spec build if you have development experience or if you're keeping the units as investments. Others won't lend at all unless you have a pre-sale contract in place for at least one of the units. The more units you're building, the more cautious lenders become about funding without a sale secured.

Linking Construction Finance to a Land Purchase

If you're buying land and building in one transaction, you'll need a land and construction package structured to release funds in two stages. The first drawdown covers the land purchase, and the remaining funds are held back and released progressively as the build proceeds.

You'll usually need to settle on the land before construction can begin, which means you'll be paying interest on the land component while the development application is being finalised and the builder is preparing to start. Some lenders allow you to make interest-only repayments on the land portion until construction begins, then roll the construction funding into the same facility once the build is underway.

Timing matters. Most lenders require you to commence building within a set period from the disclosure date, usually six to 12 months. If your development approval is delayed or your builder isn't ready to start, you may need to renegotiate the loan terms or find a lender with more flexibility around start dates.

What Happens After Practical Completion

Once the build reaches practical completion and the occupancy certificate is issued, the loan converts from construction funding to a standard mortgage. If you're keeping the units as investments, the loan structure typically shifts to principal and interest repayments, though interest-only repayment options may be available for a set period if you're holding the properties long term.

If you're selling one or more units, the sale proceeds are used to reduce the loan balance. Some lenders require you to sell within a certain timeframe after completion, particularly if they assessed your serviceability based on projected sale proceeds rather than rental income. Other lenders are more flexible and allow you to hold the units as long as you can service the debt.

The valuation at completion is important. If the finished units are worth less than the lender's original valuation, you may need to reduce the loan balance or provide additional equity to meet the lender's loan-to-value ratio requirements. If the units are worth more than expected, you may have access to additional equity that can be used for further investment or to offset other debt.

Multi-unit construction funding requires more planning and documentation than a standard home loan, but the structure is consistent once you understand how lenders assess the application and release the funds. If you're working shifts or managing a build while on roster, having the funding and draw schedule locked in upfront means fewer decisions to make during construction.

Call one of our team or book an appointment at a time that works for you. We'll walk through the application process, match you with lenders who fund multi-unit builds, and make sure the draw schedule aligns with your builder's payment terms.

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