Everything You Need to Know About Renovation Home Loans

Renovating a property you own often delivers stronger returns than buying something new, but funding the work requires the right loan structure from the start.

For small business owners, the way you structure a renovation loan affects your tax position, your business borrowing capacity, and how quickly you can access funds when builders or tradespeople need payment. Getting this wrong can lock up cash flow at the worst possible time or reduce your ability to secure commercial finance when your business needs it.

Using Equity to Fund Your Renovation

You can access equity in your existing property to fund renovation costs without needing a separate personal loan. Most lenders will let you borrow up to 80% of your property's current value without paying Lenders Mortgage Insurance (LMI), which means if your home is worth $800,000 and you owe $400,000, you have up to $240,000 in accessible equity before LMI applies.

Consider a scenario where a business owner holds a property valued at $950,000 with a remaining loan of $520,000. They want to renovate the kitchen, bathroom, and add a deck at a total cost of $110,000. At 80% LVR, they can borrow up to $760,000, giving them $240,000 in available equity. The renovation is funded by increasing the home loan to $630,000, and the lender releases funds progressively as each stage is completed.

This approach keeps the loan to value ratio below the threshold that triggers additional insurance costs and avoids the higher interest rates that come with unsecured finance.

How Lenders Release Funds for Renovations

Lenders typically release renovation funds in stages, not as a lump sum. You'll need to provide a scope of works, quotes from licensed builders or tradespeople, and a timeline before the loan is approved. Funds are then drawn down progressively, usually tied to completion milestones like demolition, frame and lock-up, fit-out, and practical completion.

This staged approach protects the lender and ensures you're not paying interest on the full loan amount before the work is done. It also means your builder or trades need to invoice at each stage, and you'll need to submit those invoices to the lender for approval before funds are released. Some lenders allow owner-builders to access renovation finance, but most require a licensed builder and will only release funds directly to the builder, not to you.

If you're managing the renovation yourself and coordinating multiple trades, you may need to structure the loan differently or provide additional documentation to satisfy the lender's requirements.

Split Rate Structures for Renovation Loans

A split loan lets you fix part of your loan and keep the rest on a variable rate. This can work well for renovations because the variable portion gives you access to an offset account and lets you make extra repayments without penalty, while the fixed portion locks in your repayments on the base loan amount.

For a business owner with fluctuating income, this structure offers control. You can park surplus business income in an offset account linked to the variable portion, reducing the interest you pay day-to-day, while the fixed rate provides certainty on a portion of your borrowing. If your business has a strong quarter, you can pay down the variable portion without restriction. If cash flow tightens, the fixed portion ensures your repayments don't spike if variable rates rise.

When structuring a split loan for renovation, consider fixing the portion that covers your original loan balance and keeping the renovation drawdown on a variable rate with offset. That way, any business income you hold in offset directly reduces interest on the funds you're drawing for the build.

Interest-Only Repayments During Construction

Some lenders allow interest-only repayments on the renovation portion of your loan while the work is underway. This reduces your monthly repayment obligation during a period when you're also paying for materials, trades, and project management.

Once the renovation is complete, you can switch to principal and interest repayments or refinance to a different structure if your circumstances have changed. Interest-only isn't suitable for everyone, particularly if your goal is to build equity quickly, but it can provide breathing room when cash flow is under pressure.

If you're holding an investment property and renovating to increase rental yield or capital value, interest-only repayments may also align with your tax strategy, as the interest remains deductible and you're not forced to pay down principal before the property is generating higher income.

Separating Personal and Investment Borrowing

If you're renovating an investment property, keep that loan separate from your owner-occupied home loan. Mixing the two can create tax complications, as only the interest on the investment portion is deductible. Lenders and accountants both prefer clean loan splits, and it makes refinancing much simpler if you want to restructure or move lenders later.

For business owners, this separation also protects your borrowing capacity. If your investment loan is standalone and positively geared after renovation, it won't weigh as heavily on your serviceability when you apply for commercial finance or want to expand your business lending.

When Refinancing Makes More Sense Than Topping Up

If your current home loan has a high interest rate or limited features, refinancing the entire loan may give you access to renovation funds and reduce your ongoing repayments at the same time. This is particularly relevant if your loan is more than two years old and you haven't reviewed your rate or loan structure since then.

Refinancing also lets you consolidate other debts, such as car loans or business equipment finance, into your home loan if that improves your overall cash flow. Just be aware that extending the term on short-term debts can cost more in total interest, even if the monthly repayment is lower.

Before committing to refinance, compare the interest rate discount, loan features, and any application or discharge fees. Some lenders offer offset accounts, portability, or rate discounts that aren't available on your current loan, and those features can be worth more over time than a marginally lower headline rate.

Calculating How Much You Can Borrow for Renovations

Your borrowing capacity for a renovation depends on your income, existing debts, living expenses, and the value of your property. Lenders assess serviceability by looking at your ability to repay the increased loan amount at a higher interest rate than you'll actually pay, usually adding a buffer of 2-3% to the current variable rate.

For business owners, lenders typically assess your income using tax returns, often averaging the last two years. If your business income has increased recently but isn't yet reflected in your most recent return, some lenders will accept accountant letters or financial statements to support a higher income figure. This can make a material difference to how much you can borrow, particularly if you're planning a larger renovation or want to retain an offset balance for working capital.

You can get a clearer picture of your borrowing capacity and the loan structures available by reviewing your current position with a broker before you commit to any quotes or contracts.

Call one of our team or book an appointment at a time that works for you to discuss how to structure your renovation loan in a way that protects your business borrowing capacity and aligns with your tax position.

Frequently Asked Questions