Buying a second home isn't just 'buying your first home again with more experience.' The tax treatment, lending structure, and strategy questions are genuinely different.
Lending capacity is the first surprise. Your existing mortgage counts as a liability in the new serviceability assessment, even if it's on a rental yielding net income. Expect your borrowing capacity to feel lower than you anticipated — and plan to have conversations with lenders that understand portfolio lending.
Loan structure matters more the second time. Keeping loans uncrossed (each property secured only by itself, not tied to another) preserves flexibility. Using separate accounts with clean interest trails makes tax time dramatically simpler. Splitting fixed and variable on the investment component is often the right call. A good broker will map this out before you're under contract.
The tax story changes too. Interest on the investment loan is deductible; interest on the owner-occupied loan is not. Structuring offsets, redraws, and repayments correctly from day one avoids complications down the line. Talk to your accountant early — not after settlement.
Finally, a strategic point: your second property decision should fit your long-term picture, not the current market cycle. Investing in the suburb you want to live in next, vs. the suburb that gives the best yield, vs. the suburb closest to where your life is now — these are different decisions with different answers. Pick your goal before you pick the property.