Top 10 Ways to Finance a Multi-Unit Development Site

How Construction Finance Works for Development Site Purchases

Construction finance for a multi-unit development site operates differently from standard residential lending. Lenders assess both the land acquisition and the development construction as a single funding proposition, typically through a progressive drawdown structure where funds release at specific milestones rather than as a lump sum. The loan amount covers the land purchase price, construction costs, and associated fees including council approval expenses and professional consultancy.

The application requires detailed documentation beyond standard construction loans for lawyers. You'll need council-approved plans, a fixed price building contract with a registered builder, a quantity surveyor's cost estimate, and evidence of pre-sales if the lender's loan-to-value ratio policy requires presale commitments for multi-unit projects. Most lenders advancing funds on development sites want to see a development application approved before proceeding to formal approval, though some will offer conditional approval earlier in the process.

Consider a scenario where you're acquiring a site zoned for four townhouses at $850,000, with construction costs estimated at $1.2 million. A lender advancing at 70% loan-to-value ratio would provide roughly $1.435 million across the land settlement and progressive construction drawdowns. The remaining $615,000 comes from your equity or cash, injected upfront at land settlement and progressively through the construction phase as the lender's percentage of each claim may fall below 100% of invoiced amounts.

The Progressive Drawdown Structure for Multi-Unit Projects

Funds release according to a progress payment schedule aligned with construction milestones. The builder invoices based on completed stages, a quantity surveyor or lender-appointed inspector verifies the work, and the lender releases payment directly to the builder or into your account depending on contract structure. Typical milestones include base stage, frame stage, lock-up stage, fixing stage, and practical completion, though multi-unit developments often include additional interim stages given the project scale and duration.

You only pay interest on funds drawn down at each stage, not the total approved amount. If $200,000 releases at base stage, interest accrues on that amount until the next drawdown occurs. Most lenders structure these facilities as interest-only during construction, with principal and interest repayments commencing after practical completion or once you transition to an investment loan structure if holding the completed units.

The progressive drawing fee applies each time the lender releases funds, typically between $300 and $500 per drawdown depending on the lender. Across six to eight drawdown events on a multi-unit project, these fees add $2,400 to $4,000 to your funding costs. Factor this into your feasibility analysis alongside interest costs, which accumulate throughout the construction period and either capitalise into the loan balance or require servicing from other income sources.

Fixed Price Contracts and Why Lenders Require Them

Lenders advancing construction finance on development sites require a fixed price building contract with a registered builder. Cost-plus contracts, where you pay actual costs plus a builder margin, expose the lender to budget blowouts and funding shortfalls. A fixed price contract transfers construction cost risk to the builder, provided the contract includes adequate provisional sum allowances for items like rock excavation or services connection that can't be accurately priced until work commences.

The contract must specify a progress payment schedule that aligns with the lender's drawdown milestones. If the builder's payment claims don't match the lender's inspection stages, disputes arise about when funds release. The builder needs payment to pay sub-contractors including plumbers and electricians, but the lender won't release funds until their inspector verifies the work justifies the claim amount. Draft the contract with this tension in mind, ensuring payment triggers match standard industry milestones rather than arbitrary percentages.

In our experience with multi-unit developments, builders quoting on four or more dwellings often structure contracts with more granular payment stages than standard residential builds. A townhouse project might include separate claims for each unit at frame stage rather than a single claim for all frames, spreading drawdowns across a longer period and reducing the dollar value of individual claims. This approach suits builders managing cash flow across multiple trades but requires careful coordination with your lender's inspection availability.

How Interest Accrues During the Development Period

Interest charges on construction finance for development sites typically exceed standard variable rates. Lenders price the higher risk associated with construction and development into the rate, which may sit 0.5% to 1.5% above their standard variable product depending on your loan-to-value ratio, presale position, and builder credentials. The rate applies only to drawn funds, so your interest cost in early stages remains relatively contained.

As an example, if $850,000 draws down at land settlement and the construction loan interest rate sits at 7.2%, you'll pay roughly $5,100 per month in interest on that portion alone. As construction progresses and further drawdowns occur, monthly interest increases proportionally. By the time $1.435 million is fully drawn, monthly interest reaches approximately $8,610. Over a 12-month construction period, total interest approaches $85,000, assuming a mid-point average drawdown across the period.

Most applicants capitalise interest into the loan during construction rather than servicing it from income. Lenders include an interest reserve in the approved loan amount, calculated based on the construction timeline and progressive drawdown schedule. If your development runs over time due to weather delays, material shortages, or builder scheduling issues, the interest reserve depletes faster than anticipated, potentially requiring additional equity injection or a loan increase to cover the shortfall.

Council Approval and Development Application Requirements

You can't commence construction without council approval, and most lenders won't provide formal approval without sighting the development consent. The development application process involves submitting architectural plans, engineering reports, traffic studies, and environmental assessments depending on the site and local planning controls. Once submitted, council assessment periods vary considerably, from eight weeks in some jurisdictions to six months or more where applications face objections or require additional information.

Some lenders offer conditional approval before the development application finalises, allowing you to secure the site with confidence that finance will proceed once consent issues. The conditional approval typically lapses if you don't satisfy the condition within a specified period, often six months. If your development application extends beyond that timeframe, you'll need to request an extension or resubmit the application, which may require updated supporting documents including updated income verification and a fresh property valuation.

Purchasing a development site without development consent increases risk but may also reduce acquisition cost, as sites with approved plans command a premium. If you're acquiring unconsentted land, ensure your contract of sale includes a cooling-off period or subject-to-planning-approval clause that allows you to withdraw if the development application refuses or approves with conditions that render the project unviable. Your solicitor drafts these clauses, but your broker and quantity surveyor should review the approval conditions to confirm they don't compromise your funding structure.

When You Need to Commence Construction After Settlement

Most construction loan approvals require you to commence building within a set period from the disclosure date or loan settlement, typically six to 12 months. If you settle on the land but delay construction commencement beyond this window, the lender may require a full re-assessment including updated valuation, income verification, and credit check. Property values and your financial position may have shifted in the interim, potentially affecting your borrowing capacity or the lender's willingness to proceed.

This condition exists because lenders price construction finance based on current market conditions and construction costs. A 12-month delay could see material and labour costs increase by 10% or more in volatile conditions, eroding the feasibility margin the lender relied on when approving the facility. If you're acquiring a site but can't commence construction immediately due to tenant leases, contamination remediation, or staged development plans, discuss the timeline upfront with your lender to confirm their policy accommodates your intended holding period.

Transitioning from Construction to Permanent Lending

Once construction reaches practical completion, the facility transitions to a standard investment loan or converts to a construction to permanent loan structure depending on the lender's product. The interest rate typically reduces to standard variable or fixed rates at this point, though you'll need to requalify based on the completed development's rental income and your overall servicing position at that time.

If you're retaining the completed units as rental properties, lenders assess serviceability based on 80% of the rental income across all four units plus your employment income, minus your existing commitments and the new loan repayments. If rental income and your salary don't support the full loan balance on a principal and interest basis, you may need to remain on interest-only repayments, inject additional equity to reduce the balance, or sell one or more units to reduce debt.

Some applicants prefer to refinance to a different lender at completion rather than transitioning with the construction lender. This approach makes sense if the construction lender's ongoing rates or features don't suit your long-term strategy, or if another lender offers better terms for your completed investment portfolio. Refinancing incurs discharge fees, application fees with the new lender, and valuation costs, but may deliver sufficient rate or feature improvements to justify the expense. Our investment loan refinancing for lawyers page outlines the refinancing process in detail.

Equity Requirements and Loan-to-Value Ratios

Lenders advancing on multi-unit development sites rarely exceed 70% to 75% loan-to-value ratio, calculated on the lower of cost or 'as if complete' valuation. If the land costs $850,000 and construction costs total $1.2 million, your total cost is $2.05 million. At 70% loan-to-value ratio, the lender advances $1.435 million, requiring $615,000 in equity from you. That equity might come from savings, existing property equity accessed through a separate facility, or a combination of both.

If the 'as if complete' valuation based on the estimated end value of the four completed townhouses comes in at $2.4 million, the lender still calculates their advance on cost rather than end value at the initial approval stage. Some lenders reassess at practical completion and may increase the facility if the completed value exceeds the cost base, but you can't rely on this when structuring your initial equity position. Using equity release loans for lawyers to fund the deposit and preliminary costs is common, provided your overall servicing position supports the combined debt.

Owner Builder Finance and When It Applies

If you're acting as owner builder rather than engaging a registered builder, your finance options narrow considerably. Most mainstream lenders won't advance construction finance to owner builders on multi-unit developments due to the increased risk of cost blowouts, project delays, and incomplete construction. Specialist lenders offering owner builder finance typically require higher equity contributions, charge higher interest rates, and impose stricter progress inspection requirements.

Owner builder finance may suit experienced developers with trade qualifications and direct relationships with sub-contractors, but even then, the funding cost and equity requirement often outweigh the saving on builder margins. Unless you have substantial construction experience and capacity to manage multiple trades across four units simultaneously, engaging a registered builder with a fixed price contract delivers better access to funding and transfers construction risk away from you and your lender.

Call one of our team or book an appointment at a time that works for you to discuss your development site acquisition and how construction funding structures around your specific project scope, equity position, and intended exit strategy.

Frequently Asked Questions