The Pros and Cons of Construction Loans for Investment

Choosing to Build an Investment Property During Separation

Building an investment property while separating might sound like adding complexity to an already complicated situation, but for some people it makes financial sense. Construction finance works differently to standard home loans because you're borrowing against something that doesn't exist yet, and lenders release funds in stages as the build progresses. This means your deposit needs to stretch further upfront, and you'll need capacity to cover holding costs while the property generates no income.

The main advantage is that you can create equity through the build itself. If you purchase suitable land in an area with solid rental demand and engage a registered builder on a fixed price building contract, you're often looking at a finished property worth more than the combined land and construction costs. The challenge is that during the construction phase, which typically runs six to twelve months, you're servicing a loan on an asset that isn't yet producing rent.

How Progressive Drawdowns Work in Practice

Construction finance releases in stages tied to specific milestones, not as a lump sum. Lenders only charge interest on the amount drawn down at each stage, which helps manage costs during the build. A typical progress payment schedule might release funds at slab, frame, lock-up, fixing, and completion stages.

Consider someone purchasing land for $280,000 and building an investment property with a construction cost of $320,000. The lender assesses serviceability on the full loan amount of $600,000, but initially you're only paying interest on the land component. Once the slab is poured and inspected, the next drawdown releases, and your interest cost increases. By lock-up stage, you might have drawn $450,000, and that's the figure your interest calculation is based on until the next release.

Most lenders charge a Progressive Drawing Fee each time they release funds, often between $200 and $400 per drawdown. Over five or six progress payments, this adds up. Some lenders also require a progress inspection before releasing each instalment, which is where a bank-appointed valuer or quantity surveyor confirms the builder has reached the claimed milestone. This protects both you and the lender, but it does mean delays in one trade can hold up the entire payment sequence.

The Difference Between Fixed Price and Cost Plus Contracts

A fixed price building contract sets the construction cost upfront, which gives you certainty when applying for finance. The lender knows exactly how much the build will require, and you're protected if materials or labour costs increase during construction. Most mainstream lenders will only consider construction finance with a fixed price contract from a registered builder.

A cost plus contract, where you pay the builder's costs plus a margin, introduces variables that most lenders won't accept for investment property construction. The risk is that costs blow out and you're either forced to inject more funds or leave the project incomplete. If you're separating and cash flow is already under pressure, that risk isn't worth taking just to save a percentage point on the builder's margin.

Holding Costs While the Property Isn't Tenanted

The period between settlement on the land and completion of the build is where construction finance gets expensive. You're paying interest on each progressive drawdown, council rates on the land, and potentially strata fees if you're building a townhouse or unit. None of this is offset by rental income because the property isn't habitable.

In our experience, people underestimate how much these holding costs add up over six to nine months. On a $600,000 loan with interest-only repayment options and a variable rate, you might be paying around $2,500 per month in interest alone by the time you're halfway through the build. Add rates, insurance, and any lender fees, and you're looking at close to $20,000 in costs before a tenant moves in. If you're also managing a property settlement or supporting dependents, that's a significant call on your cash flow.

Some lenders allow you to capitalise interest during construction, meaning it's added to the loan balance rather than paid out of pocket. This can ease immediate pressure, but it increases the debt you're carrying once the property is complete and reduces the equity buffer you've built.

When Council Approval Delays Push Out Your Timeline

Construction loans typically require you to commence building within a set period from the Disclosure Date, often three to six months. If your development application is still with council or you're waiting on modifications to council plans, that timeline can become a problem. Lenders won't extend the loan indefinitely, and if the approval drags beyond the allowable window, you may need to reapply or accept revised terms.

Delays also mean you're holding the land longer before construction starts, which extends the period you're paying interest with no progress. If separation proceedings are ongoing and your financial position is being reassessed by lawyers or the court, a delayed build can complicate settlement discussions because the asset's value remains speculative until completion.

Serviceability When You're Borrowing on One Income

Lenders assess construction loan applications based on the full loan amount, even though you won't draw it all at once. If you're applying on a single income post-separation, the bank wants to see that you can service $600,000, not just the $280,000 land component you're settling on first.

This is where construction finance diverges from a typical investment loan. The lender also considers that the property won't generate rental income for at least six months, so they'll often assess your capacity to carry both the construction loan and any existing debt without factoring in future rent. Some lenders will allow you to include projected rental income in serviceability once you can provide a signed builder's contract and council approval, but the rental figure they accept is usually conservative.

If your income has dropped due to separation or you're transitioning from joint to single borrowing, this can be the point where a construction loan application stalls. It's worth having a conversation with a broker who understands how different lenders assess construction finance before you commit to a land purchase.

Converting to a Standard Investment Loan After Completion

Once the build is complete and you have a certificate of occupancy, the loan converts from construction finance to a standard investment loan. At that point, you can refinance to a different lender if you've found a lower rate, or you can stay with the original lender and move to principal and interest repayments if that suits your strategy.

The advantage of converting is that you're no longer paying the higher interest rate that often applies during construction, and you can start claiming depreciation and other tax deductions once the property is tenanted. If you've built well and the property appraises above the total loan amount, you've created equity that can be accessed later for other purposes, whether that's buying out a former partner's interest in another asset or funding a deposit on your next home.

Some people use construction finance as part of a broader rebuild strategy after separation. Rather than splitting an existing property portfolio down the middle, one partner takes a block of land and builds a new investment, while the other retains an established property. This can make the division cleaner and avoid the need for a bridging loan or rushed sale.

Whether Building Fits Your Post-Separation Timeline

Construction finance makes sense if you have stable income, sufficient deposit, and at least twelve months before you need the investment property to be contributing to your cash flow. It doesn't suit situations where you need immediate rental income to meet serviceability for another purchase, or where your financial position is still being negotiated and you can't commit to a six-month build.

If you're weighing up whether to build or buy established, the question usually comes down to timeline and capacity to absorb holding costs. Building gives you a new property with full depreciation benefits and the potential to add value through design and location choice. Buying established gets you rental income immediately and avoids the risks associated with builder delays, cost variations, and council approvals.

For someone separating who's trying to establish a new financial foundation, construction finance is a tool that works in specific circumstances. It's not inherently better or worse than purchasing an existing investment property, but it does require a clear-eyed view of your cash flow, your timeline, and your ability to manage a project that will take months to deliver a return.

If you're considering building an investment property while separating and want to talk through how construction finance would work in your specific situation, call one of our team or book an appointment at a time that works for you.

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