A construction loan is a specialised home loan designed specifically for borrowers who are building a new home from the ground up, undertaking major renovations, or doing a knockdown-rebuild. Unlike a standard home loan where you receive the full loan amount upfront, a construction loan is drawn down in progressive stages (called “progress payments”) as your build reaches key milestones. You typically only pay interest on the amount that’s been drawn down, not on the full loan amount, which helps manage cash flow during the construction period.
Construction loans operate differently from standard home loans. Here’s a typical process:
You apply for a construction loan based on your land value, building contract, and financial position. The lender assesses the "as if complete" value—what your property will be worth once construction is finished.
Once approved, the lender releases the first payment, which typically covers:
As construction progresses, your builder requests progress payments at key stages:
During construction, you make interest-only payments on the amount drawn down. As each progress payment is released, your interest payments increase slightly.
Once construction is complete, your loan typically converts to a standard principal and interest home loan, and you begin regular repayments.
Example Timeline and Payments
Let’s look at a practical example:
Drawdown: $200,000
Monthly interest payment: Approximately $1,083
Drawdown: $100,000 (total: $300,000)
Monthly interest payment: Approximately $1,625
Drawdown: $100,000 (total: $400,000)
Monthly interest payment: Approximately $2,167
Drawdown: $100,000 (total: $500,000)
Monthly interest payment: Approximately $2,708
Drawdown: $60,000 (total: $560,000)
Monthly interest payment: Approximately $3,033
Drawdown: $40,000 (total: $600,000)
Monthly interest payment: Approximately $3,250
Principal and interest repayment begins: Approximately $3,792 per month
As you can see, your interest payments gradually increase as funds are drawn, but remain significantly lower than they would be if you’d borrowed the full amount upfront.
Different lenders and builders use different payment structures, but common arrangements include:
Owner-builders may have more flexible draw schedules based on actual costs incurred, but will need to provide detailed receipts and documentation.
Covers just the construction phase. Once building is complete, you need to refinance to a standard home loan (which could be with the same or different lender).
Automatically converts to a standard home loan once construction is complete, avoiding the need to refinance. This is the most common and convenient option.
A single loan covering both land purchase and construction, streamlining the process if you're buying land and building simultaneously.
Designed for major renovations rather than new builds, with progress payments released as renovation milestones are achieved.
Construction loans require more documentation than standard home loans:
A fixed-price contract with a registered, licensed builder outlining the scope of work, timeline, and payment schedule.
Detailed architectural plans and specifications approved by your local council.
Development approval and building permits from your local council.
Engineer's soil test report confirming the land is suitable for construction.
Builder's warranty insurance (Home Owners Warranty or similar, depending on your state).
Standard loan application documents including income verification, assets, liabilities, and identification.
Detailed breakdown of all construction costs, including builder's contract, landscaping, driveways, fencing, and any additional works.
If you're an owner-builder, you'll need additional qualifications, insurance, and detailed cost estimates for all materials and trades.
Construction loans require more documentation than standard home loans:
The most common approach - you pay interest each month on the drawn amount, keeping your loan balance from growing.
Add the interest to your loan balance during construction (if your lender allows). This means you don't make any payments during the build, but your final loan amount will be higher.
Pay interest from your savings or offset account to minimize the impact on cash flow during construction.
Construction loans are more complex than standard home loans and come with unique considerations:
Construction loans often have slightly higher interest rates than standard home loans due to the increased risk and complexity.
Construction loan applications take longer to assess due to the additional documentation and evaluation required.
Lenders charge fees for valuers or inspectors to verify completion at each stage (typically $200-400 per inspection).
Most lenders require your builder to be licensed, registered, and adequately insured.
Lenders typically require fixed-price building contracts to minimize risk and ensure adequate funding.
The lender assesses both current land value and “as if complete” property value to determine borrowing capacity.
Construction loan approvals are typically valid for 6-12 months, requiring reapproval if construction doesn’t commence in time.
To ensure your construction project goes smoothly:
If you’re a first home buyer building a new home, you may be eligible for:
Our brokers can help you navigate these grants and concessions to maximise your benefits.
Construction loans are particularly valuable for:
Our experienced brokers specialise in construction loans and can guide you through every step – from initial approval through to your first home loan repayment. We’ll help you understand the process, choose the right lender, structure your loan optimally, and ensure your building journey is as smooth as possible.
We deliver personalised, high quality lending solutions.
