Beginner's Guide to House and Land Construction Loans

A construction loan releases funds in stages as your new home is built, rather than as a single lump sum at settlement.

If you're looking at house and land packages in Narellan or nearby estates like Oran Park and Gregory Hills, understanding how construction finance differs from a standard home loan changes how you budget, when you settle on the land, and what you'll pay during the building phase. The loan structure follows the build, not the purchase.

How a Land and Construction Package Loan Works

You'll settle on the land first, then draw down funds progressively as the builder completes each stage of construction. Most lenders structure this as a single approval with two distinct phases: land purchase and construction drawdown. The land component settles like any property purchase, while the construction portion releases in instalments tied to progress inspections.

Consider a buyer purchasing a house and land package in one of Narellan's newer estates. They settle on the land with a deposit and the first drawdown, then make interest-only repayments on that amount while the builder begins work. As the slab is poured, frame goes up, and lockup is reached, the lender releases additional funds directly to the builder. During construction, the buyer only pays interest on the amount drawn down so far, not the full loan amount.

What Lenders Assess When You Apply

Lenders assess your borrowing capacity based on the total project cost, including land price, building contract, and associated costs like stamp duty and legal fees. Your application needs to demonstrate you can service the full loan amount once construction completes and repayments switch from interest-only to principal and interest.

The construction loan application requires a signed fixed price building contract with a registered builder, council approval or development application lodged, and confirmation that you'll commence building within a set period from the disclosure date. Lenders also want to see that the land is suitable for the proposed build and that all statutory requirements are in place before they issue formal approval. Borrowing capacity is calculated on the completed value, so your income needs to support repayments on the entire loan amount, not just the land portion.

The Progressive Drawdown Schedule

Most construction contracts operate on a five or six-stage progress payment schedule. Funds release after each stage is inspected and signed off, typically at base stage, frame, lockup, fixing, practical completion, and final completion. The lender arranges a progress inspection before releasing each payment, and the builder invoices according to the agreed schedule.

Your builder will provide a progress payment schedule as part of the contract. This shows what percentage of the build cost is due at each stage. The lender holds back a small portion until final completion to protect against defects or incomplete work. You'll also pay a progressive drawing fee each time funds are released, which varies by lender but typically ranges from around $150 to $400 per drawdown. Some lenders cap this fee or include a set number of drawdowns in the loan package.

What You Pay During Construction

During the building phase, you make interest-only repayment options on the amount drawn down. If you've drawn $200,000 for land and base stage, you're only charged interest on that $200,000, not the full approved loan amount. As more funds release, your repayments increase to reflect the larger drawn balance.

This structure keeps your repayments lower during construction, but you need to budget for the step up to full principal and interest repayments once the build is complete. At practical completion, the loan converts to a standard home loan with full repayments on the total amount. The transition usually happens automatically, though some lenders require you to confirm the switch in writing.

Fixed Price Building Contracts and Cost Control

A fixed price building contract protects you from cost overruns and is a requirement for most construction loan approvals. The contract locks in the build cost, so if materials or labour costs rise during construction, the builder carries that risk. Lenders prefer fixed price contracts because they know exactly how much will be drawn and can assess your capacity accurately.

Cost plus contracts, where you pay for materials and labour as they're incurred, are harder to finance and usually require a larger deposit or additional security. If you're building a custom design rather than a project home, make sure your contract is structured as a fixed price agreement before you apply. In our experience, buyers who go to a lender without a signed fixed price contract face delays or conditional approvals that slow the entire process.

Construction Loan Interest Rates Compared to Standard Home Loans

Construction loan interest rates are typically the same as standard variable or fixed rates, though some lenders charge a small margin during the construction phase. The difference is less about the rate itself and more about how interest is calculated on a progressively drawn balance.

You can fix the construction loan interest rate once the build completes and the loan converts to a standard mortgage, though fixing during the drawdown phase is less common. Most buyers stay on a variable rate during construction for flexibility, then consider fixing once they've moved in and repayments stabilise. Speak with a mortgage broker in Narellan who understands how local builders structure their contracts, as this affects which lenders will offer the most suitable construction funding terms.

Council Approval and Timing

You don't always need full council approval before applying, but most lenders want to see a development application lodged or construction certificate issued before they'll provide formal loan approval. If you're buying in a newer estate where the land is already titled and zoned for residential construction, the approval process is usually quicker than building on an established block.

Narellan and the surrounding Camden growth corridor have streamlined approval processes for house and land packages in master-planned estates, but you still need to factor in several weeks for the development application and construction certificate. Your builder will usually manage this, but it's worth confirming the timeline before you commit to a settlement date on the land. If settlement occurs before approvals are in place, you'll be paying interest on the land without being able to start the build.

When to Speak with a Broker About Construction Finance

Before you sign the land contract or building agreement, it's worth confirming your borrowing capacity and which lenders will support the specific package you're considering. Not all lenders offer construction loans, and those that do have different policies on project homes versus custom builds, owner builder finance, and the types of contracts they'll accept.

If you're weighing up house and land packages across different estates or comparing builders, understanding how each option affects your loan structure helps you make a more informed decision. Grove Financial can access construction loan options from banks and lenders across Australia, so you're not limited to the finance the developer or builder recommends. Call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions