How to Finance Land Purchase for Construction

Buying land to build on means you'll need two things funded at different times: the land purchase upfront, and the build as it progresses.

Most lenders structure this as a single loan with two stages. You settle on the land first, then the construction funding gets released in instalments as your builder completes certain milestones. That means you're only paying interest on what's been drawn down at any given time, not the full build cost from day one.

If you're looking at blocks in growth areas like Leppington or Oran Park, understanding how the funding schedule aligns with your builder's contract can save you from surprises during the build. South West Sydney has seen a wave of land releases over the past few years, and plenty of buyers are navigating this process for the first time.

How Land and Construction Package Funding Works

The lender approves a total loan amount that covers both the land cost and the estimated build cost. You draw down the land portion at settlement, then the construction portion gets released progressively as the build advances. Each time the builder reaches a milestone, such as slab down or frame up, the lender arranges an inspection and releases the next portion of funds.

You'll pay interest only on the amount drawn down so far. During the build, most lenders offer interest-only repayment options, which keeps your payments lower while construction is underway. Once the build is complete and you've had the final inspection, the loan converts to a standard home loan with principal and interest repayments.

Consider a buyer purchasing a block in Oran Park for $400,000 with a build contract of $450,000. The total loan amount is $850,000, but at settlement, only $400,000 is drawn. If the first progress payment after slab completion is $90,000, the borrower is now paying interest on $490,000, not the full $850,000. That difference matters when you're managing cash flow during a six to nine month build.

What Your Builder's Progress Payment Schedule Means for Drawdowns

Your builder's contract will include a progress payment schedule that outlines how much is due at each stage of the build. Common stages include base or slab, frame, lockup, fixing, and practical completion. The lender's construction draw schedule needs to match this, and most lenders align their releases with standard building milestones.

Before each payment, the lender arranges a progress inspection to confirm the work has been completed to the required standard. Once the inspection clears, the funds are released directly to the builder. There's usually a Progressive Drawing Fee charged at each drawdown, typically between $200 and $400 per inspection depending on the lender.

If your builder is working under a fixed price building contract, the payment schedule is straightforward and lenders are comfortable with the structure. If you're building under a cost plus contract or acting as an owner builder, expect more scrutiny and possibly a larger deposit requirement. Lenders treat owner builder finance as higher risk, and some won't offer it at all.

Fixed Price Contracts vs Cost Plus Contracts

A fixed price contract locks in the total build cost at the start. The builder agrees to complete the home for a set price, and any cost overruns are their problem, not yours. Lenders prefer this structure because it's predictable, and it's easier to confirm the loan amount will cover the full build.

A cost plus contract means the builder charges you for the actual cost of materials and labour, plus a margin. The final build cost isn't locked in, which introduces uncertainty. Lenders are more cautious with these contracts and may require a larger buffer or contingency amount built into the loan. Some lenders won't touch them at all unless you can show a detailed breakdown and fixed quotes from major sub-contractors.

If you're considering a custom design or building with a smaller builder who prefers cost plus, talk to a broker early. You'll need to demonstrate that the total funding is realistic, and that means getting pricing on major items like plumbing, electrical, and tiling before you apply. Credible Finance works with buyers in South West Sydney on construction loans regularly, and we've seen how much smoother the process runs when the contract type is sorted before the application goes in.

What You'll Need Before Applying for Construction Finance

The lender will want to see council approval, a copy of the building contract, and detailed plans. If you haven't received development application approval yet, most lenders won't proceed with a formal approval. You can get a pre-approval in principle, but the full approval is conditional on council plans being finalised.

You'll also need to show that you're building with a registered builder who holds the appropriate insurance. In NSW, that means Home Building Compensation Fund cover. If you're going down the owner builder path, you'll need to prove you have the experience and capacity to manage the build, and you'll still need insurance in place.

Deposit requirements are typically higher for land and build loans than for established property. Expect to need at least 10% of the total project cost as genuine savings, and some lenders will want 15% or 20% depending on your income and credit profile. If you're a first home buyer and eligible for government schemes, that can reduce the deposit requirement, but you'll still need to show you can service the loan during construction and after completion. For more on deposit structuring and eligibility, check the first home buyers page.

When Construction Timelines Stretch

Most construction loan approvals require you to commence building within a set period from the disclosure date, usually six months. If your build is delayed due to weather, supply issues, or council hold-ups, you may need to request an extension from the lender. Some lenders are flexible, others aren't.

If the build drags on longer than expected, your interest-only period during construction might run out before the home is finished. That can push your repayments up while you're still funding progress payments, which creates cash flow pressure. If you're buying land in an area with known council delays, such as parts of Camden or Leppington, factor that into your timeline and talk to your broker about lenders who allow longer construction windows.

In one scenario we've dealt with, a buyer in Gregory Hills purchased land and locked in a builder, but wet weather and material shortages pushed the build from six months to nearly twelve. The lender extended the interest-only period twice, but it required proactive communication and evidence from the builder that progress was continuing. Without that, the borrower would have been forced into principal and interest repayments halfway through the build, which would have created serious financial strain.

Choosing Between Construction to Permanent Loan or Split Funding

Most lenders offer a construction to permanent loan, meaning the construction funding automatically converts to a standard home loan once the build is complete. You don't need to reapply or refinance, and the interest rate transitions from the construction phase rate to whatever product you've chosen for the long term.

Some buyers split their loan into fixed and variable portions once the build is done, especially if they want rate certainty but also want the flexibility to make additional payments without penalty. That decision doesn't need to be made at the start, but it's worth thinking about your repayment strategy before the build wraps up. If you're planning to hold the property as an investment, the interest rate structure will affect your cash flow and tax position. For more on holding strategy and structuring, take a look at investment loans.

Construction Loan Interest Rates and What Drives Them

Construction loan interest rates are usually slightly higher than standard home loan rates, typically by 0.1% to 0.3%, depending on the lender. The reason is simple: construction funding carries more risk than lending against an established property. The security doesn't exist yet, and if the build stalls or the borrower can't complete, the lender is left with an incomplete structure on a block of land.

The rate you're offered will depend on your deposit size, income, credit history, and the lender's appetite for construction funding at the time. Some lenders are active in the space and offer sharp rates, others price themselves out deliberately because they don't want the exposure. Access to construction loan options from banks and lenders across Australia means a broker can compare products and find a lender that's actually competitive for your situation, rather than going direct to a bank that might not even be writing new construction loans that month.

Rates aside, the real cost during construction comes from how long you're in the interest-only phase and how much of the loan has been drawn down. If your builder is efficient and the job moves quickly, you'll spend less time paying interest on a partially drawn loan. If the build drags or you're waiting on materials, that interest cost climbs.

Owner Builder Finance and What Makes It Different

If you're planning to act as an owner builder and manage the construction yourself, the lending landscape changes significantly. Most major banks won't lend to owner builders at all, and the lenders who do will want a larger deposit, detailed costings, and evidence that you can manage the project.

You'll need to show quotes from sub-contractors, a detailed budget that includes every stage of the build, and proof that you hold an owner builder permit from NSW Fair Trading. The lender will also expect you to have contingency funding built into the loan to cover cost overruns, because owner builder projects are far more likely to go over budget than builds managed by a registered builder.

The progressive drawdown process is similar, but the lender will scrutinise each progress inspection more closely. You'll need to provide invoices and receipts to prove the funds are being spent on the build, and some lenders will release payments directly to sub-contractors rather than to you. If you're serious about going down this path, expect the approval process to take longer and the documentation requirements to be heavier. Credible Finance can talk you through which lenders are open to owner builder finance and what you'll need to prepare before applying.

What to Watch for in Your Building Contract

Your building contract dictates the payment schedule, the total cost, and the conditions under which the builder can claim each progress payment. Before you sign, make sure the milestones align with the lender's standard drawdown stages. If your builder has non-standard payment terms or front-loads the schedule, some lenders won't accept it.

Also check whether the contract includes a clause for variations. If you make changes during the build, such as upgrading finishes or adjusting the floor plan, the builder will charge extra. If those variations push the total cost above your approved loan amount, you'll need to cover the difference out of pocket or apply for a top-up, which isn't always guaranteed.

For buyers in South West Sydney working with project home builders on house and land packages, the contracts are usually standardised and lender-friendly. If you're doing a custom design with a smaller builder, read the contract carefully and consider getting it reviewed before you commit. A poorly structured contract can create funding headaches down the line.

Whether you're buying suitable land in Leppington or finalising a custom design in Camden, construction funding isn't something to leave until the last minute. The earlier you understand how the loan structure works and what your builder's progress payment schedule looks like, the fewer surprises you'll hit during the build. Call one of our team or book an appointment at a time that works for you to talk through your land and construction package and get the funding sorted before you start digging.

Frequently Asked Questions