Understanding the Basics of Construction Loan Features

What Makes Construction Finance Different from Standard Home Loans

Construction finance releases funds progressively as your build reaches set stages, not as a single upfront sum. You pay interest only on the amount drawn down at each stage, which keeps your repayments lower during the building period. The loan converts to a standard mortgage once construction finishes and you receive practical completion.

Consider a WA government employee building in a growth corridor outside Perth. They've secured suitable land for $180,000 and signed a fixed price building contract for $420,000. Instead of borrowing $600,000 on day one, the lender advances funds across five or six stages tied to the registered builder's progress payment schedule. After the slab is poured, the builder requests the first drawdown, typically around 15% of the build cost. The lender arranges a progress inspection, then releases that portion directly to the builder. At that point, the borrower pays interest on roughly $63,000 plus the land cost, not the full loan amount.

This structure protects both you and the lender. The builder gets paid as work is completed, you avoid paying interest on money sitting idle, and the lender ensures funds are only released when verified work has been done. Once the build reaches practical completion and you move in, the loan switches to principal and interest repayments based on the full amount drawn.

How Progressive Drawdown Schedules Are Structured

Most lenders tie drawdowns to a standard five or six stage schedule. Typical stages include base or slab, frame, lock-up, fixing, and practical completion. Each stage represents a percentage of the total building cost, and the builder invoices according to that schedule. The lender won't release funds until a progress inspection confirms the work matches the stage claimed.

Some lenders charge a Progressive Drawing Fee each time they arrange an inspection and release funds. This fee usually sits between $300 and $500 per drawdown, so across a five-stage build you might pay $1,500 to $2,500 in total. Not all lenders charge this fee, and some waive it if you're refinancing other lending to them or meet certain borrowing thresholds. It's worth asking upfront what the fee structure looks like, because these costs add up alongside council approval fees, development application charges, and other build-related expenses.

The schedule also dictates your cash flow during construction. If your builder requests payment before the lender releases funds, you may need to cover the gap temporarily. Most fixed price contracts align payment claims with lender draw stages to avoid this, but it's something to confirm before signing.

Interest-Only Repayment Options During Construction

Construction loans default to interest-only repayments while the build is underway. You're charged interest daily on the balance drawn to date, and you make monthly payments based on that balance. As each new stage is funded, your interest cost increases in line with the additional drawdown.

In our earlier example, after the slab is complete the borrower might be paying interest on $243,000 (land plus first stage). Once the frame stage is funded, that might increase to around $360,000, and interest repayments adjust accordingly. At current variable rates, that means monthly repayments could shift from roughly $1,200 to $1,800 as the build progresses, depending on your loan's interest rate.

Once construction finishes and you've moved in, the loan converts to a construction to permanent loan with standard principal and interest repayments. Some lenders allow you to remain on interest-only for a set period after completion if you're holding the property as an investment, but for owner-occupiers the switch to principal and interest usually happens automatically. You can also make additional payments during construction if you want to reduce the balance before full repayments begin, though most borrowers prefer to keep cash available for unexpected build costs.

Fixed Price Contracts and Cost Plus Arrangements

A fixed price building contract sets the total build cost upfront, which makes it easier for lenders to approve construction finance. The contract states exactly what's included, and the builder can't increase the price unless you request variations. Lenders prefer this arrangement because they know the final loan amount before committing funds.

A cost plus contract works differently. The builder charges you the actual cost of materials and labour, plus an agreed margin or fee. This gives you more flexibility to make changes during the build, but it also means the final cost isn't locked in. Most mainstream lenders won't offer construction finance on a cost plus contract because the risk is too variable. If you're planning a custom design with ongoing input, you'll need to find a lender who accepts cost plus arrangements, and the approval process will be more involved.

If you're using owner builder finance, where you act as the builder and pay sub-contractors like plumbers and electricians directly, you'll face even tighter lending criteria. Lenders typically require evidence that you've managed construction projects before, and they may cap the loan-to-value ratio lower than they would for a registered builder. The drawdown process is also more complex, because you'll need to provide invoices and proof of payment for each trade before the lender releases the next stage.

How Council Plans and Development Applications Affect Loan Approval

Lenders won't approve a construction loan application until you have council approval for your build. That means your development application needs to be submitted and approved before you can proceed with finance. The approval confirms the build meets local planning requirements, zoning rules, and building codes. Without it, the lender has no certainty that construction can legally go ahead.

Most construction loan offers require you to commence building within a set period from the Disclosure Date, usually six months. If council approval drags out or the builder's schedule is delayed, you may need to extend the loan offer or reapply, which can mean updated valuations, fresh credit checks, and potentially different interest rates if market conditions have shifted.

For land and construction packages or house and land packages, the developer often handles council plans as part of the package, which speeds up the timeline. The estate typically has pre-approved designs that meet local requirements, so you can move from contract signing to finance approval faster than with a fully custom build. This makes project home loans more predictable for lenders and borrowers alike, and it's one reason why house and land packages remain a common choice for public sector employees building their first home.

Accessing Construction Loan Options as a WA Government Employee

You can access construction loan options from banks and lenders across Australia, not just those with a WA presence. Some lenders offer specific benefits for public sector borrowers, such as reduced interest rates, waived ongoing fees, or higher loan-to-value ratios without lenders mortgage insurance. These benefits apply to construction loans in the same way they do for standard home loans, provided you meet the lender's employment criteria.

WA government employees with stable tenure and clear income documentation are generally well-positioned for construction finance. Lenders view public sector employment as lower risk, which can improve your borrowing capacity and give you access to more flexible loan features. If you're also eligible for a Home Guarantee Scheme or similar program, you may be able to combine that with construction finance to reduce your deposit requirement.

Some lenders also offer land and build loan structures where the land component is funded separately from the construction component, then consolidated into a single loan once the build is complete. This can help manage your repayments during the build period, particularly if you're carrying other debts that you plan to address through debt consolidation once the new home is finished.

If you're building as an investment rather than a primary residence, you'll want to explore interest-only repayment options that extend beyond the construction period. This can improve cash flow if you're planning to rent the property out while building equity, and it's a common strategy for public servants expanding their property portfolio.

Renovation Finance Versus New Build Construction Loans

Renovation finance works differently from construction finance for a new build. If you're doing a major renovation rather than building from scratch, the lender will want detailed plans, a fixed scope of works, and quotes from licensed tradespeople. The drawdown schedule is similar, with funds released as each stage of the renovation is completed, but the assessment process puts more weight on the property's existing value and the expected value after renovation.

A house renovation loan might fund a second storey addition, a full internal fit-out, or structural changes that require council approval. The lender will typically cap the loan at a percentage of the property's anticipated post-renovation value, and they may require a quantity surveyor's report to confirm costings. For smaller renovations that don't involve structural changes or require council approval, some lenders offer a home improvement loan instead, which is a standard secured loan rather than a staged drawdown product.

If you're buying a property that needs work, you might consider refinancing your current home to release equity and fund the renovation separately, rather than structuring it as renovation finance. The right approach depends on how much work is involved, whether you're living in the property during the renovation, and how quickly you need access to funds.

Construction finance gives you control over the build process and keeps interest costs tied to the actual amount you're using. If you're building a custom home, working with a project builder, or pursuing a land and construction package, the features outlined here will shape how your loan is structured and how your repayments evolve from first drawdown through to final completion. Call one of our team or book an appointment at a time that works for you to talk through your build plans and confirm which lenders offer the most relevant features for your circumstances.

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