What are Construction Loan Structures & How Do They Work?

Construction loan structures are built around progressive drawdowns that release funds in stages as your build reaches specific milestones.

Unlike a standard mortgage where you receive the full loan amount upfront, construction finance is released in instalments that match the progress of your build. You only pay interest on the amount drawn down at each stage, which keeps your repayments lower during construction. The structure is designed to protect both you and the lender by ensuring funds are only released when work is completed and verified.

How Progressive Drawdowns Work

Progressive drawdowns release funds at key construction milestones, typically five to six stages from base slab to final completion. The lender arranges a progress inspection before releasing each payment to confirm the work matches the stage claimed by your builder. The standard stages include base stage, frame stage, lock-up stage, fixing stage, and practical completion. Your builder submits a claim when each stage is reached, the lender inspects within a few business days, and funds are released directly to the builder once approved.

Consider a pharmacist building a custom home on suitable land. At base stage, the slab is poured and the lender releases the first 15% of the build cost after inspection. At frame stage, the structure is up and another 20% is drawn down. By lock-up stage, when the roof and external walls are complete, around 35% of the total build cost has been released. The pharmacist is only paying interest on those drawn amounts, not the full loan, which keeps monthly repayments manageable while still working full-time in aged care.

Interest Charges During Construction

You only pay interest on the amount drawn down at each stage, not the total approved loan amount. During the build, most lenders offer interest-only repayment options, meaning you are not paying down the principal until construction is complete. Once the build reaches practical completion and you have the keys, the loan converts to a standard mortgage with principal and interest repayments.

If your approved loan amount is $600,000 and $150,000 has been drawn down after the first two stages, you are only charged interest on that $150,000. At current variable rates, that might be around $600 per fortnight rather than $2,400 if the full amount had been drawn. As each stage is completed and more funds are released, your interest charges increase proportionally. This structure gives you time to adjust your budget as the build progresses rather than facing the full repayment amount immediately.

Fixed Price Contracts and Cost Plus Contracts

A fixed price building contract sets a total build cost that does not change unless you make variations, while a cost plus contract charges actual costs plus a builder's margin. Most lenders prefer fixed price contracts because the total loan amount is known from the outset and the progress payment schedule is agreed before construction starts. Cost plus contracts introduce uncertainty around the final loan amount, which can complicate approval and drawdown structures.

With a fixed price contract, your builder provides a detailed progress payment schedule that breaks down how much is due at each stage as a percentage of the total contract price. If your build cost is $500,000 and the contract specifies 15% at base stage, the builder claims $75,000 when that milestone is reached. The lender knows exactly what to expect at each stage, and you know your maximum loan amount will not shift mid-build. This certainty is particularly useful for aged care pharmacists managing shift work and on-call commitments, as it removes the need to constantly monitor cost variations or renegotiate lending limits.

Construction to Permanent Loan Structures

A construction to permanent loan is a single facility that covers both the construction phase and converts automatically to a standard home loan once the build is complete. You submit one application, go through one approval process, and avoid the cost and paperwork of refinancing after construction. During the build, the loan operates as a construction facility with progressive drawdowns. After practical completion, it switches to a standard principal and interest mortgage without requiring a new application.

Some lenders charge a Progressive Drawing Fee for each inspection and drawdown, typically between $200 and $400 per stage. Others build this cost into the interest rate or waive it entirely for certain professions. When comparing construction finance options, check whether your lender charges this fee and how many stages are included. A loan with six stages at $300 per inspection adds $1,800 to your build cost, which is worth factoring into your budget alongside council approval fees and development application costs.

Land and Construction Packages

A land and construction package involves purchasing suitable land and arranging construction finance as a single transaction. The loan covers both the land purchase and the build cost, with the land component settled first and construction drawdowns commencing once council plans are approved and the registered builder is ready to start. Most lenders require you to commence building within a set period from the disclosure date, usually six to twelve months, to ensure the loan is used for its intended purpose.

In a scenario where a pharmacist purchases land for $250,000 and arranges construction finance for a $450,000 build, the total loan is $700,000. The land component settles first, with the pharmacist paying interest on $250,000 until construction begins. Once the builder is ready to start, the construction drawdowns commence and interest is charged progressively as each stage is completed. The entire process requires coordination between conveyancers, builders, and the lender to ensure the land settles on time and construction can start within the required period.

Owner Builder Finance and Renovation Finance

Owner builder finance is available for pharmacists who hold an owner builder licence and plan to manage the construction themselves, though it typically requires a larger deposit and comes with stricter conditions around progress claims and inspections. Instead of releasing funds to a registered builder, the lender releases payments to you as the owner builder, and you are responsible for paying sub-contractors including plumbers, electricians, and other trades. Lenders require detailed quotes and invoices before releasing each drawdown, and the approval process is more involved than a standard construction loan.

For renovation projects, renovation finance follows a similar structure to new home construction finance, with funds released in stages as the renovation progresses. The difference is that you already own the property, so the loan is structured as a top-up or refinance rather than a land and build loan. Whether you are extending an existing home or undertaking a major structural renovation, the lender will require council approval, detailed plans, and a fixed price contract before approving the drawdown schedule. Pharmacist Home Loans can access construction loan options from banks and lenders across Australia, including those that cater specifically to healthcare professionals with shift-based income.

If you are planning a new build or considering a land and construction package, call one of our team or book an appointment at a time that works for you. We work with aged care pharmacists across Australia and understand how to structure construction funding around your income and shift patterns.

Frequently Asked Questions