Beginner's Guide to Construction Loans

What Is a Construction Loan and How Does It Work?

A construction loan releases funds in stages as your home is built, rather than providing the full amount upfront. You only pay interest on the amount drawn down at each stage, which keeps costs lower during the build period.

Consider a scenario where you've found suitable land in Rockingham near the foreshore and want to build a custom home. The lender will approve your total loan amount based on your land value plus the final build cost shown in your fixed price building contract. Instead of handing over the full amount at settlement, the bank releases funds progressively as each stage completes. Your builder submits a claim after the slab is poured, another after the frame goes up, and so on through to final completion. Between each stage, you're only charged interest on what's been paid out so far. If $150,000 has been drawn for the slab and frame, you're paying interest on $150,000, not the full $450,000 loan amount.

This structure means you'll typically make interest-only repayments during construction, then convert to principal and interest repayments once the build finishes and you move in. Most lenders require you to commence building within a set period from the disclosure date, usually six to twelve months, so the approval stays current.

Understanding the Progressive Drawdown Process

The progressive drawdown works according to a schedule agreed between your builder and the lender. Each payment is released after an inspection confirms the work has been completed to the required standard.

Lenders typically structure the drawdown in five or six stages. The first payment covers the building slab, followed by the frame, lockup stage when the roof and windows are in, fixing stage when internal walls and services are installed, practical completion when the house is liveable, and final completion after any defects are addressed. Before releasing each payment, the lender sends a valuer or inspector to verify the work matches what the builder has claimed. This protects you from paying for work that hasn't been done and ensures the build stays on track.

You'll pay a progressive drawing fee each time the lender releases funds, usually between $200 and $400 per drawdown. Across six drawdowns, that adds around $1,500 to $2,000 to your total costs. Some lenders charge this upfront as a single fee, while others add it to each individual drawdown. When comparing construction finance options, check how the lender structures this fee alongside the construction loan interest rate.

Fixed Price Contracts Versus Cost Plus Arrangements

A fixed price building contract sets your total build cost upfront, while a cost plus contract charges you for actual costs as they occur, plus a builder's margin.

Most lenders across Australia require a fixed price contract for construction finance. This gives them certainty about the final loan amount and reduces the risk of cost blowouts. Under a fixed price contract, if your builder quotes $380,000 to build your home in Rockingham, that's what you'll pay regardless of whether materials or labour costs increase during construction. The builder wears the risk of variations in price, unless you request changes to the original plans.

A cost plus contract can work well for custom builds with unique specifications, but access to construction loan options becomes more limited. You'll typically need a larger deposit and stronger financial position to qualify. The lender will still set a maximum loan amount based on the estimated build cost, but you carry the risk if actual costs run higher. For most people building their first custom home, a fixed price contract through a registered builder offers more certainty and simpler approval.

How Rockingham's Building Landscape Affects Your Build Timeline

Rockingham's coastal location and growing population influence both council approval timeframes and the availability of quality construction contractors.

The City of Rockingham processes development applications based on the complexity of your build. A standard project home on a regular lot might clear council plans in six to eight weeks, while a two-storey custom design on sloping land closer to the coast could take three to four months. Factor this into your timeline before you commit to a construction loan, as most lenders require settlement on the land before construction finance activates. If you're buying a land and construction package, the developer may have already secured relevant approvals, which speeds up the process.

Demand for builders in Rockingham has remained solid, particularly for homes in newer estates around Baldivis and Golden Bay. Booking a registered builder often requires several months lead time, and that timeline extends if you're requesting custom design elements or using specific materials. Start conversations with builders before you finalise your land purchase so you know whether your intended build timeline is realistic for the area.

What Lenders Look For in a Construction Loan Application

Lenders assess your income, deposit size, and the builder's credentials before approving construction funding. You'll need council approval, a fixed price contract from a registered builder, and enough savings to cover your deposit plus costs.

The standard deposit for a construction loan sits at 10% of the combined land and build cost, though some lenders will consider 5% if you pay lenders mortgage insurance. Beyond the deposit, you'll need to show genuine savings for settlement costs, which include stamp duty on the land, legal fees, and building insurance. In our experience, lenders want to see that you can service the loan at the completed value, not just the interest-only repayments during construction. This means they'll assess your application based on principal and interest repayments on the full loan amount, even though you won't make those repayments until the build finishes.

Your builder's registration and insurance matter as much as your own financial position. Lenders will check that the builder holds current registration in Western Australia and carries appropriate contract works insurance. If you're planning to act as an owner builder, access to finance becomes significantly more restricted. Most mainstream lenders don't offer owner builder finance due to the higher risk of delays and cost overruns.

Land and Build Loans for House and Land Packages

A land and build loan combines finance for purchasing the land with construction funding in a single approval. This works particularly well for house and land packages where the developer coordinates both elements.

Many buyers in Rockingham's growing estates prefer house and land packages because they streamline the process. You select your lot and choose a home design from the builder's range, and both transactions settle in sequence. The lender approves the full amount upfront based on the combined contract price, then releases funds in two main stages: settlement of the land, followed by progressive payments as the house is built. This reduces the number of applications you need to complete and means you're dealing with one interest rate across the whole project.

The main consideration with this approach is timing. Once the land settles, you're paying interest on that portion of the loan even if construction hasn't started. Some packages include a delayed settlement option where the land doesn't transfer until building is ready to commence, which can save several months of interest payments on the land component. Ask about this option when reviewing available packages, as it can make a material difference to your holding costs during the build.

Interest-Only Repayment Options During Construction

Most construction loans automatically include interest-only repayment options during the build phase, switching to principal and interest once you receive the keys.

During construction, you're typically not living in the property, so minimising repayments while you're still paying rent or living in your current home makes practical sense. Interest-only repayments mean you're only covering the cost of borrowing, not reducing the loan amount itself. Once construction reaches practical completion and you move in, the loan converts to a standard home loan with principal and interest repayments based on the amount you've drawn down.

Some lenders allow you to make additional payments during the construction phase if you want to reduce the loan balance early, though this is less common while the loan is still in progressive drawdown. Once the loan converts to a standard home loan after construction, you'll have the usual flexibility to make extra repayments if your loan product allows it. If you're comparing construction to permanent loan options, check how the lender handles the transition between construction and the ongoing home loan, as this affects your access to features like offset accounts and redraw facilities.

Renovation Finance Compared to New Construction

Renovation finance and new home construction finance operate differently, even though both release funds in stages. A renovation loan applies to improving an existing property you already own or are purchasing, while a construction loan funds building a new home from the ground up.

If you're considering whether to buy an older home in Rockingham and renovate or build new, the financing structure influences that decision. A house renovation loan requires you to own the property first, then draws down funds as renovation work progresses. The property needs to be liveable during at least part of the renovation, and lenders will assess the current value plus the estimated value after renovation when setting your loan amount. Building new gives you more control over the final design and often clearer cost certainty through a fixed price contract, but requires suitable land and a longer timeline from start to finish.

Both options can deliver a home that suits your needs, but renovation tends to suit buyers who want to stay in an established area close to existing schools and amenities, while new construction appeals to those who want a custom design and don't mind being in a developing part of Rockingham.

If you're ready to talk through what a construction loan would look like for your situation in Rockingham, call one of our team or book an appointment at a time that works for you. We'll walk through your plans, explain how the drawdown process works with your chosen builder, and help you access construction loan options from banks and lenders across Australia.

Frequently Asked Questions