What Is Usable Equity and How Much Do You Have?
Equity is the difference between your property's current value and your outstanding loan balance. Usable equity is the portion of that equity that a lender will allow you to access — typically the amount that keeps your LVR at or below 80%.
| Scenario | Values |
|---|---|
| Current property value | $1,400,000 |
| Existing loan balance | $700,000 |
| Total equity | $700,000 |
| 80% of property value | $1,120,000 |
| Usable equity (80% less loan) | $420,000 |
In this example, the owner can access $420,000 in usable equity — enough to fund the deposit and costs on a second Sydney property worth $1.3M–$1.5M, without any additional savings.
How to Access Equity for an Investment Property
There are two main ways to access your equity for an investment purchase:
- Equity release (top-up loan): You refinance your existing loan to a higher amount, drawing out the equity as cash. This cash then serves as the deposit for the investment property. The investment property itself is separately secured.
- Cross-collateralisation (avoid this): You allow the lender to secure both properties against both loans. This gives the bank more control over your properties and is generally discouraged by mortgage brokers — see below.
⚠️ Avoid Cross-Collateralisation
Many bank staff recommend cross-collateralising because it is simpler for them to process. However, it gives the lender more power over your properties, restricts your ability to sell or refinance individual properties, and can create tax complications. Always keep investment and owner-occupied properties in separate loan structures — your broker will structure this correctly.
Correct Loan Structure for Property Investors
The correct structure for a two-property portfolio (own home + investment) is:
- Loan 1: Original home loan (owner-occupied, P&I, offset account). Refinance this to 80% LVR of current property value to extract usable equity.
- Loan 2 (new): Investment property loan, secured only against the investment property. Set up as interest-only to maximise tax deductibility during the investment holding period.
- Tax note: Always consult your accountant before structuring. The owner-occupied portion should be paid down as fast as possible (non-deductible debt), while the investment loan is maintained as interest-only (deductible debt) for as long as feasible.
See our Investment Loans guide for more on investment property loan structures. Use our Mortgage Repayment Calculator to model repayments on the combined portfolio.
Borrowing Capacity for a Second Property in Sydney
When buying a second property using equity, lenders assess your total borrowing capacity across both properties. This means:
- Your existing P&I loan repayments are counted as a committed expense
- The proposed investment loan repayments are stress-tested at a rate 3% above the loan rate (APRA buffer)
- Rental income from the investment property is typically assessed at 75–80% of market rent
Borrowing capacity calculations for multi-property investors are complex — lenders assess them differently. A mortgage broker who specialises in investment lending will identify which lender assesses your total portfolio position most favourably. Use our Borrowing Power Calculator as a guide, but speak with a broker for a precise assessment.
The Best Sydney Suburbs for Investment in 2026
With equity from a Sydney owner-occupied home, you have access to a wide range of investment opportunities. Strong investment areas in 2026 include:
- Western Sydney growth corridors (Penrith, Blacktown, Campbelltown): Yield-focused, strong rental demand, infrastructure uplift. See our Penrith guide.
- Northern Beaches (Dee Why, Narrabeen): Lower yields but historically strong capital growth. See our Northern Beaches guide.
- Inner West (Marrickville, Newtown, Sydenham): Strong rental demand from professionals, good long-term capital growth.
For further investment property analysis across Sydney, our partners at Home Loans Hub publish regular market reports.
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📅 Book a Free Call Get in Touch →Frequently Asked Questions
You refinance your existing home loan to access the usable equity (the amount that keeps your LVR at or below 80%). The released equity is used as the deposit for the investment property. A separate loan is then taken out against the investment property itself. A mortgage broker will structure this correctly to keep your loans separate and optimise the tax position.
You need enough equity to cover a 20% deposit on the investment property plus purchasing costs (stamp duty, legal fees, etc.). For a $1M investment property, you need approximately $200,000 in equity for the deposit plus $40,000–$50,000 in purchase costs — a total of $240,000–$250,000 in accessible equity.
No. Cross-collateralisation gives your lender control over both properties and restricts your flexibility. The correct structure is a separate loan for each property, with the deposit for the investment property drawn from an equity release on your owner-occupied home. Your mortgage broker will set this up correctly.
Yes, some investors use a split offset/line of credit structure on their owner-occupied property to fund investment deposits. This has flexibility benefits but also risks (interest rate changes, tax treatment). Discuss this option with your broker and accountant.
You will need: recent payslips or tax returns (income evidence), current home loan statement showing balance and property address, a recent council rates notice or valuation for the existing property, and standard identity documents. If there is an existing investment property, you will also need rental income evidence (lease agreements, property management statements).