Beginner's Guide to House and Land Construction Loans

A construction loan releases funds in stages as your home is built, not as a lump sum at settlement.

This changes how much you pay and when. Instead of borrowing the full amount on day one, you draw down progressively as each stage completes. Interest charges on the amount drawn down, which keeps your repayments lower during the build. Most lenders also allow interest-only repayments until construction finishes, so you're not paying principal and interest on a home you can't live in yet.

In our experience working with buyers across Redbank Plains, the progressive nature of construction finance catches people off guard if they haven't been through the process before. The loan structure, the documentation, the council approvals and the payment schedule all differ from a standard home loan, and each stage has its own timeline and conditions that need to line up.

How Construction Finance Differs from a Standard Home Loan

With a standard home loan, the lender values a completed property and advances the full loan amount at settlement. With construction loans, the lender values the land first, then assesses the building contract separately, and releases funds in instalments tied to construction milestones.

Consider a buyer purchasing a house and land package in Redbank Plains at the suburb's current median. The lender will typically advance around 90% to 95% of the land value at land settlement, depending on your deposit size. The remaining loan funds are held back and released as the builder completes each stage: base stage, frame stage, lockup, fixing stage and practical completion. The builder invoices you at each milestone, you notify the lender, and the lender arranges a progress inspection before releasing the next drawdown.

This means you'll hold two separate contracts: one for the land purchase and one for the building works. Both need to align for finance approval. If the land contract settles but the building contract isn't signed or council approval hasn't been granted, some lenders will require you to commence building within a set period from the land settlement date, often six to twelve months. Miss that window and the lender may reassess your application or require you to refinance the land component before construction can begin.

What Goes Into a Construction Loan Application

You'll need a signed building contract with a registered builder, council-approved plans, and proof that the builder holds the required insurance.

The building contract must be a fixed price building contract, not a cost plus contract. Lenders don't finance cost-plus arrangements for residential construction because the final loan amount can't be determined at approval. The contract should include a progress payment schedule that breaks the total build cost into defined stages, each with a percentage of the contract price attached. These percentages need to align with the lender's own drawdown structure, which varies by lender but typically follows a five-stage or six-stage model.

Council approval means a development application has been submitted and approved by Ipswich City Council, which governs Redbank Plains. If you're buying in an established estate where the land has already been registered and titled, council approval for the house design itself is usually straightforward. If the land is part of a new subdivision still under civil works, you may need to wait for the developer to complete road, sewer and stormwater infrastructure before title is issued and construction can start.

The lender will also require a property valuation. For a house and land package, this means a valuation of the land at current market value plus an 'as if complete' valuation of the finished home. The valuer assesses whether the combined land and construction cost represents reasonable security for the loan amount. If the valuation comes in below the contract price, you'll need to cover the shortfall with additional savings or adjust the build specification.

Progress Payments and How Drawdowns Work

Each time the builder completes a stage, they invoice you for the next progress payment.

You submit the invoice to your lender along with a drawdown request. The lender appoints an independent building inspector to visit the site and confirm the stage has been completed to the standard described in the contract. If the inspector is satisfied, the lender releases funds directly to the builder or into your nominated account, depending on the loan terms. The builder then moves to the next stage.

A typical five-stage schedule might look like this: 10% at base stage when the slab is poured, 15% at frame stage when the timber or steel frame is erected, 35% at lockup when the roof, windows and external doors are installed, 35% at fixing stage when internal fit-out is complete including plumbing, electrical and plastering, and the final 5% at practical completion when the builder hands over the keys and the council issues an occupancy certificate. Some contracts add a sixth stage for the deposit, usually 5% to 10% paid on signing.

The time between stages varies. A standard project home on a flat block in Redbank Plains might take four to six months from slab to practical completion if there are no delays. Weather, material supply and subcontractor availability all affect the schedule. While construction is underway, you're typically making interest-only repayments on the amount drawn down. Once the build is finished and you've moved in, the loan converts to a standard principal and interest home loan, and your repayments adjust to include both principal and interest on the full amount borrowed.

Fees Specific to Construction Loans

Lenders charge a progressive drawing fee for each drawdown inspection, usually between $300 and $500 per stage depending on the lender.

Over a five-stage build, that adds $1,500 to $2,500 to your total borrowing costs. Some lenders cap the number of inspections or bundle the fee into the loan amount rather than charging it upfront, but either way it's a cost that doesn't apply to a standard home loan and needs to be factored into your budget alongside legal fees, building insurance and the builder's own deposit.

The construction loan interest rate is often slightly higher than a standard variable home loan rate, though not always. Some lenders offer the same rate for construction and standard lending, while others add a margin of 0.10% to 0.25% during the construction phase. That margin typically drops away once the loan converts to a standard home loan after practical completion.

Owner Builder Finance and Why It's Harder to Access

If you're planning to act as an owner builder rather than engage a registered builder, most mainstream lenders won't finance the project.

Owner builder finance carries higher risk for the lender because there's no registered builder providing contract performance insurance, no fixed price contract, and no clear recourse if the project stalls or runs over budget. The lenders who do offer owner builder finance typically require a larger deposit, at least 20% to 30%, and they'll want to see detailed costings, proof of trade qualifications or evidence that licensed subcontractors have been engaged for electrical, plumbing and structural work.

For a buyer in Redbank Plains purchasing a house and land package from a registered volume builder, this isn't an issue. The builder carries the contract risk, holds the required insurance, and works within the lender's standard construction loan framework. But if you're considering a custom design or a DIY approach to save on builder margins, understand that finance options narrow significantly and the application process becomes more involved.

What Happens If the Build Runs Over Time or Over Budget

A fixed price building contract protects you from cost overruns caused by the builder.

If materials or labour costs rise during construction, the builder wears that cost, not you, provided you haven't requested variations to the original plan. However, if you do request changes—an extra power point, upgraded tapware, a larger alfresco—the builder will issue a variation quote, and you'll need to cover that cost separately. Variations aren't automatically included in the construction loan. Some lenders allow you to increase the loan amount to cover minor variations if you have sufficient equity, but others will require you to pay for variations from your own funds.

If the build timeline extends beyond the original schedule and you're still paying rent elsewhere, that's a cash flow issue you'll need to manage. The construction loan doesn't compensate you for delays. The interest-only repayment structure helps, but you're still servicing the debt on a partially completed home while covering your living costs. In rare cases where a builder becomes insolvent or walks off site, the builder's contract performance insurance is supposed to cover the cost of completing the project, though claims can take time to process and may not cover your full exposure. This scenario underscores why lenders insist on registered builders with appropriate insurance.

Refinancing or Selling Before Completion

You can't sell or refinance a property that doesn't yet have an occupancy certificate.

Until practical completion, the home isn't legally habitable and a new buyer's lender won't settle on an incomplete dwelling. If your circumstances change mid-build—a job loss, relationship breakdown, or unexpected expense—your options are limited. You can try to assign the building contract to another buyer if the builder and the land developer agree, but this isn't straightforward and usually involves legal costs and contract penalties. Walking away from the land means forfeiting your deposit and any progress payments already made, and you'll still owe the construction loan balance to your lender.

Once the build is finished, you can refinance or sell like any other property, but during the construction phase you're committed to seeing the project through.

Why Location Still Matters for Construction Loan Approval

Lenders assess the land location and the likely end value of the completed home, not just your ability to service the loan.

Redbank Plains sits within the Springfield growth corridor, approximately 30 kilometres south-west of Brisbane's CBD and well serviced by the Springfield Central railway line, Orion Shopping Centre, and established schools including Redbank Plains State High School and Guardian Angels Primary School. The suburb recorded 559 house sales in the twelve months to April, one of the highest transaction volumes in the Ipswich City Council area, which gives lenders confidence that the area has an active resale market.

That transaction depth matters during the valuation process. A valuer can point to recent comparable sales across a range of bedroom configurations and build styles, which tightens the valuation range and reduces the chance of a shortfall between contract price and 'as if complete' value. In a less established or more thinly traded location, the valuer has fewer comparables to work with, and lenders may apply a more conservative loan-to-value ratio or require a larger deposit to offset perceived location risk.

Call one of our team or book an appointment at a time that works for you. We'll walk through your building contract, check the lender panel for construction loan options from banks and lenders across Australia, and make sure the finance structure matches the payment schedule so there are no surprises between now and handover.

Frequently Asked Questions