How to Finance Your Home Renovation

Renovation Funding Starts With Your Current Loan Structure

Most homeowners looking to renovate already have a home loan in place. The structure of that loan determines which funding options are actually available to you without triggering unnecessary costs or delays.

If you have an existing variable rate loan with available equity, you can often increase the loan amount through a top-up or equity release. This keeps everything under one loan facility and avoids the complexity of managing multiple accounts. If you're on a fixed rate, increasing the loan amount mid-term can trigger break costs, which may outweigh the benefit depending on how much time remains in your fixed period.

Consider a homeowner in Castle Hill who purchased five years ago and has built equity through both repayments and property value growth. Their current loan balance sits at 60% of the property's value. They want to renovate the kitchen and add a second bathroom, with quotes totalling around $80,000. Rather than drawing from savings or taking a separate personal loan at a higher rate, they restructure their existing loan to access that equity at their current home loan interest rate. The increased loan amount still leaves them below 80% LVR, so no Lenders Mortgage Insurance applies.

How Equity Release Works for Renovation Projects

Equity release allows you to borrow against the value you've built in your property. The lender reassesses your property's current value and your loan balance, then calculates how much additional borrowing capacity you have within their lending criteria.

Most lenders will allow you to borrow up to 80% of your property's value without requiring LMI. If your property is valued at $900,000 and your loan balance is $540,000, you have equity of $360,000. At 80% LVR, you could borrow up to $720,000, which means access to an additional $180,000 before hitting that threshold. Not all of that will be available for renovations, as lenders also assess your income and expenses to confirm you can service the higher repayment.

In the Hills District, where property values have held relatively steady over recent years and many homes were purchased when prices were lower, homeowners who have been paying down their loans often have more equity available than they realise. That equity can fund meaningful improvements without needing to sell or relocate.

Construction Loans vs Equity Release for Larger Projects

For bigger renovations that involve structural work or multiple stages, a construction loan may be more appropriate than a straightforward equity release. Construction loans release funds in stages as the work progresses, which means you only pay interest on the amount drawn down at each phase.

This structure suits projects that take several months and involve progress payments to builders. Instead of drawing the full amount upfront and paying interest on funds sitting in an offset account, you draw as invoices are submitted and independently verified by the lender's valuer. The downside is that construction loans come with more administration, including progress inspections and stricter documentation requirements.

For smaller renovations under $100,000 that can be completed within a few weeks, a lump-sum equity release is usually more practical. You avoid the inspection fees and the delays that can occur when waiting for drawdown approvals between stages.

Interest Rate Structure When Adding to Your Loan

When you increase your loan amount, the additional borrowing is typically added at your current interest rate. If you have a variable rate loan, the extra amount goes onto the same variable rate. If you have a split loan with part fixed and part variable, you can usually nominate which portion the additional borrowing attaches to, or split the new amount as well.

This matters because your choice affects repayment flexibility. Adding the renovation amount to a fixed rate portion locks in that repayment for the remainder of the fixed term, which can be helpful if you want certainty. Adding it to a variable rate portion allows you to make extra repayments without penalty if you want to reduce the balance faster once the renovation is complete.

Many homeowners in Baulkham Hills and surrounding areas prefer to keep renovation borrowing on a variable rate even if they have a split loan, because it allows them to direct any surplus income toward reducing that portion once the project is finished. That approach means the renovation is funded at a low rate but doesn't lock you into a fixed repayment for years.

Borrowing Capacity and Serviceability for Renovation Lending

Accessing equity is only possible if you can service the higher loan amount. Lenders assess your income, existing debts, and living expenses to calculate whether you can afford the increased repayment. This is the same process used when you apply for a home loan, but now the lender is reassessing you based on a higher borrowing amount.

If your income has increased since you first took out your loan or you've paid off other debts like car loans or credit cards, your borrowing capacity may have improved. If your household expenses have increased or interest rates have risen since your loan was approved, the lender may limit how much additional borrowing they'll allow.

In a scenario where a couple in Kellyville wants to add a granny flat for $120,000, the lender will assess whether their combined income can service the existing loan plus the additional $120,000. If one partner has recently reduced their working hours or the household has new expenses like childcare, that will affect how much the lender is willing to approve. Running the numbers before committing to a builder avoids the situation where quotes are signed but funding isn't confirmed.

Using an Offset Account to Stage Renovation Costs

If you already have a mortgage offset account and enough savings set aside, you can fund the renovation directly from your offset without increasing your loan amount. This avoids the application process, the lender's valuation, and any potential increase in your repayment.

The offset account continues to reduce the interest charged on your loan balance, so using those funds does mean you'll pay slightly more interest each month until the offset is rebuilt. For homeowners who have been parking savings in an offset and want to renovate without changing their loan structure, this can be the most direct option.

Once the renovation is complete, you can redirect repayments or income back into the offset to restore the balance. This approach works well when the renovation cost is within the amount you've already saved and you want to maintain control over your loan without involving the lender at all.

Timing Your Application Around Fixed Rate Expiry

If you're currently on a fixed rate that's due to expire within the next few months, it often makes sense to wait until the fixed period ends before applying to increase your loan amount. This avoids break costs and allows you to restructure the entire loan at the same time.

During that fixed rate expiry review, you can assess whether to refix, move to variable, or split the loan, and include the additional borrowing for renovations as part of that process. Many lenders are more flexible with loan increases during a rate switch because they're already reassessing the loan terms.

Homeowners in the Hills District who fixed their loans a few years ago and are now coming to the end of those terms are in a position to review their entire loan structure, add funds for renovation, and lock in a new rate that suits their current circumstances. Timing the renovation funding with the fixed rate expiry turns a routine review into an opportunity to improve both the property and the loan setup.

Lenders Mortgage Insurance and LVR Considerations

If increasing your loan amount pushes your loan to value ratio above 80%, you'll need to pay Lenders Mortgage Insurance on the portion that exceeds that threshold. LMI can add several thousand dollars to the cost of your renovation funding, so understanding where your LVR sits before applying is important.

Lenders calculate LVR based on the property's current value, not the value after renovation. If your renovation will add significant value to the property, that doesn't reduce your LVR for the purpose of the application. The lender assesses the risk based on what the property is worth today.

For homeowners close to the 80% threshold, it may be worth contributing some of the renovation cost from savings to keep the loan amount below that level and avoid the LMI charge. Alternatively, if the renovation cost is relatively small and you're only marginally over 80%, the LMI cost may still be lower than using a higher-rate personal loan.

Call one of our team or book an appointment at a time that works for you to discuss your renovation funding options and confirm which structure makes sense for your circumstances.

Frequently Asked Questions