When you hold properties across both personal and investment structures, refinancing more than one at the same time shifts from a simple rate comparison into a sequencing and lender capacity issue.
The decision typically comes up when your owner-occupied fixed rate is expiring, your investment property rates have drifted higher than what's available elsewhere, or you need to access equity in one property to support the next purchase. Refinancing all of them together can feel logical, but lenders assess multi-property applications differently, and the order in which you move each property matters more than most prosthodontists expect.
Why Refinance More Than One Property at Once
Refinancing multiple properties at the same time makes sense when the timing aligns and the outcome improves your overall position. If your owner-occupied home is coming off a fixed rate and your investment property is sitting on a rate 80 basis points higher than what's now available, dealing with both in one process can save time and reduce the number of valuations, applications, and settlement periods you manage.
The other reason is capacity. If you want to access equity for another purchase or consolidate short-term debt, lenders will assess your entire portfolio when calculating how much they'll lend. Refinancing everything under one lender or across two lenders who understand your full structure can improve your borrowing capacity compared to leaving older, higher-rate loans in place.
Consider a prosthodontist who owns a home in Lane Cove and an investment unit in Chatswood. The owner-occupied loan is coming off a three-year fixed rate, and the investment property was refinanced separately two years ago but is now on a variable rate that's crept up. Refinancing both at the same time means one valuation process, one round of paperwork, and a single conversation with the lender about offsetting rental income against the investment debt when calculating serviceability.
How Lender Serviceability Changes With Multiple Properties
Lenders calculate your borrowing capacity based on your income, existing debts, and living expenses. When you hold multiple properties, they also factor in rental income from investment properties and subtract holding costs, including interest, strata fees, and an allowance for vacancies and maintenance.
If you refinance all your properties to one lender, they'll assess your entire portfolio in one application. That can work in your favour if the lender uses actual rental income rather than a discounted figure, but it can also mean that a single serviceability issue affects every property in the refinance. If you're carrying any short-term debt or your practice structure shows fluctuating income, one lender might decline the full application even if individual properties would have been approved on their own.
Splitting the refinance across two lenders gives you more control. You might move your owner-occupied property to one lender that offers a lower rate and keep your investment property with another that has better investor policies or will lend at a higher loan-to-value ratio. The downside is that each lender only sees part of your portfolio, which can reduce the total amount they're willing to lend. If you're planning to expand your property portfolio soon after refinancing, this split can limit your next move.
Ready to get started?
Book a chat with a Finance & Mortgage Brokers at Home Loans for Dentists today.
Sequencing the Refinance to Protect Equity Access
The order in which you refinance each property affects how much equity you can access and how much each lender will approve. If you refinance your investment property first and increase the loan amount to access equity, your owner-occupied lender will see that higher debt when they assess your application a few weeks later. That additional debt reduces your serviceability and may lower the amount they're willing to lend on your home.
The reverse approach works differently. If you refinance your owner-occupied property first and access equity from that loan, your investment lender will factor in the new home loan amount when calculating how much rental income they need to see. If your investment property is negatively geared, this can tighten serviceability and may mean the investment refinance doesn't proceed or requires a larger deposit than expected.
In one scenario, a prosthodontist refinancing a home in Mosman and an investment property in Neutral Bay wanted to access $150,000 in equity from the investment property to fund a practice upgrade. The initial plan was to refinance both properties at the same time. After reviewing the serviceability calculations, it became clear that refinancing the home first, then waiting until that loan settled before moving the investment property, allowed the lender to assess the practice income more accurately and approve the equity release without requiring additional documentation.
When Fixed Rates End at Different Times
If your fixed rates are expiring months apart, you don't always need to wait for both to refinance together. Moving one property when the fixed rate ends and the other a few months later avoids break costs and means you're not stuck on a higher revert rate while waiting for alignment.
The challenge is that lenders will reassess your serviceability each time you apply. If your income or expenses change between the first and second refinance, the second lender might arrive at a different borrowing capacity even if nothing else has shifted. This is particularly relevant for prosthodontists with income reported through a practice trust or company structure, where assessable income can vary depending on how dividends and distributions are structured across financial years.
If both fixed rates are ending within three months of each other, refinancing together is usually more efficient. If the gap is six months or longer, refinancing separately and timing each application to avoid revert rates tends to deliver a clearer outcome without locking you into a strategy that depends on both loans settling within a narrow window.
Valuation Risk Across Multiple Properties
When you refinance multiple properties at the same time, each property needs a valuation. If one property comes in lower than expected, it can reduce the equity available and may mean the lender approves a smaller loan amount than you were planning for. If that property was meant to fund the deposit for another purchase or cover consolidation of other debts, the shortfall can derail the entire refinance.
Some lenders will use an automated valuation model for properties under a certain loan amount, while others require a full valuation regardless of the loan size. If your properties are in areas where recent sales data is limited or the property type is less common, expect the valuer to take a more conservative view. Strata units in buildings with known defect issues or homes on larger blocks in mixed-use zones can both come in under your expectation, particularly if comparable sales in the past six months don't support the price you'd see on a sales appraisal.
If the valuation on one property falls short, you can either accept the lower loan amount, provide additional documents to support a higher valuation, or remove that property from the refinance and deal with it separately. The lender won't automatically reassess the valuation unless there's a clear error, so understanding the likely valuation range before you apply helps avoid surprises halfway through the process.
Offset Accounts and Redraw Across Multiple Loans
When refinancing more than one property, the way offset accounts and redraw facilities are structured can affect how you manage cash flow across your portfolio. If you refinance your owner-occupied home with an offset account and your investment property without one, any surplus cash you hold in the offset reduces the interest you pay on your home loan but doesn't affect the investment property. Since interest on investment debt is tax-deductible and interest on your home loan isn't, this structure makes sense for most prosthodontists.
If you refinance both properties to the same lender, check whether the offset account can be linked to multiple loans or only to your owner-occupied loan. Some lenders allow you to split the offset balance across loans, but the default setting is usually to apply the full balance to your home loan unless you request otherwise. If you're holding cash for a future deposit or practice expense, linking the offset to your non-deductible debt first is usually the most tax-effective approach.
Redraw works differently. If you make extra repayments on your investment loan, you can redraw those funds later, but the tax treatment depends on how you use the redrawn amount. If you redraw to fund a holiday, the interest on that portion is no longer deductible. If you redraw to fund another investment, the interest remains deductible. Most accountants recommend using offset accounts for investment properties where you expect to move cash in and out regularly, and redraw only for owner-occupied loans where tax deductibility isn't relevant.
Application Timing and Settlement Coordination
Refinancing multiple properties means coordinating settlement dates, discharge timeframes, and application milestones across two or more loans. If your owner-occupied refinance settles two weeks before your investment refinance, you'll need to cover the gap period where both the old and new loans are active. This can mean paying interest on both loans for a short period or arranging a delayed settlement on one property to align with the other.
Most lenders allow a settlement window of 60 to 90 days from application approval. If you apply for both refinances at the same time but one takes longer to value or assess, the settlement dates can drift apart. Asking the lender to delay settlement on the faster loan until the slower one is ready can keep them aligned, but not all lenders will agree to hold a settlement beyond their standard timeframe, particularly if rates are moving or their credit policy has changed since the application was approved.
If you're refinancing to access equity for another purchase, settlement timing becomes even more important. The equity isn't available until the refinance settles, so if you've signed a contract on another property with a 30-day settlement and your refinance is still waiting on valuation, you'll need a backup plan to cover the deposit or negotiate an extended settlement period with the vendor.
Call one of our team or book an appointment at a time that works for you. We'll review your current loans, map out the timing, and structure the refinance so each property moves in the right order without reducing the equity or features you need across the portfolio.
Frequently Asked Questions
Can I refinance multiple properties at the same time?
Yes, you can refinance multiple properties at the same time, but lenders will assess your entire portfolio in one application. This affects serviceability and may reduce borrowing capacity if one property has a serviceability issue.
Should I refinance all my properties to one lender?
Refinancing all properties to one lender simplifies the process and can improve serviceability if they assess rental income favourably. However, splitting across two lenders can give you more flexibility if one lender has better rates for owner-occupied loans and another has stronger investor policies.
What happens if one property valuation comes in lower than expected?
A lower valuation reduces the equity available and may mean the lender approves a smaller loan amount. You can accept the lower amount, provide additional documentation, or remove that property from the refinance and deal with it separately.
How does refinancing multiple properties affect my ability to borrow for the next purchase?
Refinancing impacts your borrowing capacity depending on how much equity you access and which lender holds each loan. If you increase debt on one property, it reduces serviceability for the next purchase unless rental income offsets the additional repayments.
Do I need to refinance all properties at once if my fixed rates end at different times?
No, you can refinance separately when each fixed rate ends to avoid break costs. However, lenders will reassess your serviceability each time, so changes in income or expenses between applications can affect the second refinance.
