Top Strategies to Finance Investment Property Construction

Building an investment property from the ground up gives you control over design, location, and depreciation benefits that older stock can't match.

The decision you're facing is whether to buy established or build new, and if you choose to build, how the funding actually works when there's no property to secure the full loan against on day one. Construction finance releases funds in stages as the build progresses, which means you're only paying interest on what's been drawn down, not the full amount from the start. That structure changes your cashflow during the build and affects how you structure the rest of your deposit and holding costs.

How Construction Loans Release Funds in Stages

A construction loan pays the builder in instalments tied to specific milestones rather than handing over the full amount upfront. The lender holds the total approved amount and releases it progressively as each stage is verified by an independent inspector. You'll typically see five to six drawdowns covering slab, frame, lockup, fixing, and practical completion. Between each drawdown, you're charged interest only on the amount released so far, which keeps your repayments lower during the build compared to a standard loan.

Consider an investor building a three-bedroom duplex on a subdivided block in Halls Head. They've purchased the land for cash and need construction funding for the build. The lender approves the full construction amount but releases it in stages. After the slab is poured and inspected, the first drawdown of around 15% is released. At that point, the investor is paying interest on 15% of the total loan, not the full amount. As the frame goes up and lockup is reached, subsequent drawdowns occur, and the interest portion climbs accordingly. By the time the build reaches practical completion, the full loan is drawn and the investor converts to principal and interest repayments with rental income covering most of the cost.

Fixed Price Building Contracts and Why Lenders Require Them

Most lenders will only approve construction finance against a fixed price building contract with a registered builder. The contract locks in the total build cost, which allows the lender to assess the loan against a known figure rather than an estimate that could blow out. Cost plus contracts, where you pay the builder's costs plus a margin, are harder to finance because the final price isn't confirmed. If you're planning to build as an owner builder, your options narrow significantly and you'll need a lender that specialises in that structure.

In Mandurah, where land and build packages are common through volume builders in estates around Lakelands and Madora Bay, the fixed price contract is standard. The builder provides a itemised quote, the lender assesses it alongside the land value, and the combined security supports the total loan. If the build cost comes in under budget, the lender doesn't release the unused portion. If it runs over, you'll need to cover the difference from your own funds unless you've built a buffer into the original loan amount.

The Progress Payment Schedule and Inspection Process

Each drawdown is triggered by a progress claim from the builder and verified by the lender's valuer or inspector. The builder submits evidence that a stage is complete, the lender arranges an inspection within a few days, and once confirmed, the funds are released directly to the builder. The schedule is usually set out in the building contract, and the lender will want to see it before approving the loan. You don't control the timing of each drawdown beyond making sure the build is progressing on schedule.

Delays at council approval or with subcontractors like plumbers and electricians can push out the progress payment schedule, which extends the interest-only period and delays the point at which rental income starts. If you're building an investment property in an area like Greenfields, where new estates are being developed and council plans are still being finalised, factor in potential approval delays when you're calculating holding costs. The longer the build takes, the longer you're covering loan interest without rental income to offset it.

Interest-Only Repayment Options During the Build

During construction, you'll make interest-only repayments on the drawn portion of the loan. Once the build is complete and you convert to a standard investment loan, you can choose to stay on interest-only for a set period or switch to principal and interest repayments. Staying interest-only after completion maximises your tax deductions and keeps repayments lower, which matters if the rental yield is tight or you're holding the property for capital growth rather than immediate cashflow.

Some lenders allow you to make additional payments during the interest-only period without penalty, which can reduce the principal before you switch to full repayments. Others lock you into interest-only with no offset or redraw until conversion. If you're managing multiple properties or expecting a lump sum during the build, check whether the loan structure allows for extra payments without triggering break costs or fees.

Land and Construction Packages Versus Separate Purchases

You can finance a build by purchasing land first and arranging construction finance separately, or by using a land and construction package where both are funded together from the start. The package approach is cleaner because the lender assesses the combined value upfront and you settle on the land with construction funding already approved. If you buy the land separately, you'll need to refinance or take out a second loan to cover the build, which adds another application and potentially another set of fees.

In Mandurah, where house and land packages are widely available through builders working in new estates, the package approach is common. The builder has a relationship with the developer, the land is ready to build on, and the lender can assess the deal as a single transaction. If you're buying suitable land independently, perhaps an infill block closer to the Mandurah foreshore or in an established pocket like Dudley Park, you'll likely handle the land purchase and construction finance as two separate steps. Both work, but the timing and deposit structure differ.

What Lenders Assess When Approving Construction Finance

Lenders assess construction loans differently to standard home loans because the security doesn't exist yet. They'll look at the land value, the build cost, the builder's credentials, and your ability to service the loan once it's fully drawn. The builder needs to be registered and insured, the plans need council approval, and the contract needs to include a clause requiring you to commence building within a set period from the disclosure date. If those elements aren't in place, the application won't progress.

Your borrowing capacity is calculated based on the completed property's value, not just the land. The lender will order a valuation based on the plans and specifications, which estimates what the finished property will be worth. If that valuation comes in lower than the combined land and build cost, you'll need a larger deposit to cover the gap. In areas like Secret Harbour where land values have climbed but build costs have also increased, the gap between total cost and completed value can be tight, especially for investors who don't qualify for first home buyer concessions.

Progressive Drawing Fees and How They Add Up

Most lenders charge a progressive drawing fee each time they release funds to the builder. The fee covers the cost of the inspection and administration, and it's usually between $300 and $500 per drawdown. Over five or six stages, that adds up to a few thousand dollars on top of the standard loan establishment costs. Some lenders waive the fee for the first drawdown or cap the total, but it's not universal.

If you're comparing construction loan options, factor in the progressive payment schedule fees alongside the interest rate and any ongoing account fees. A loan with a slightly higher rate but lower drawdown fees might cost you the same or less overall, depending on how many stages your build involves. We regularly see investors focus only on the rate and miss the cumulative impact of fees across the build period.

Converting from Construction to Permanent Finance

Once the build reaches practical completion and you receive the occupancy certificate, the loan converts from construction to permanent finance. At that point, you'll switch from interest-only on the drawn amount to either principal and interest or interest-only on the full loan, depending on what you've arranged with the lender. The conversion is usually automatic, but you'll need to provide the completion documents and arrange a final valuation if the lender requires it.

If you've built an investment property, this is when rental income starts and your cashflow changes. You'll move from paying interest out of pocket during the build to having a tenant cover most or all of the repayment. The holding costs drop, the depreciation schedule kicks in, and the property starts working as an investment rather than a construction project. If you've structured the loan correctly from the start, the transition is smooth and you're not scrambling to refinance or restructure once the build is done.

Construction finance for investment property takes longer to arrange than a standard loan, and the moving parts multiply when you're coordinating land settlement, builder contracts, council approval, and lender requirements. Call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions