Using Home Equity Safely: Renovations, Investments and Buffers

Releasing equity from your home for renovations, investments or a safety buffer is safe when you cap your total lending at a conservative loan‑to‑value ratio (LVR), keep clear cash buffers and separate each purpose into its own loan split. A broker‑designed plan makes sure you stay comfortably inside APRA rules, avoid lenders mortgage insurance (LMI) where possible, and don’t accidentally create long‑term tax headaches.

Start with clear LVR and buffer rules before tapping your home equity.

Step 1: Know how much equity you can safely touch

Lenders look at your LVR: total lending ÷ property value.

A common safe rule is to calculate usable equity at 80% LVR and leave the rest untouched.

Usable equity formula
80% of current value − existing home loan balance.

If your home is worth $1.4m and your loan is $700k:

• 80% of $1.4m = $1.12m
• Usable equity ≈ $1.12m − $700k = $420k (before serviceability checks)

For many clients, we then reduce this again to protect buffers – often aiming for a total LVR of 70–80%, in line with our guidance in /insights/how-much-equity-safely-unlock-mascot-home.

Why brokers start with LVR and buffers, not just equity

A broker will test three things before recommending a number:

1. Target LVR – can we keep you at or below 80% to avoid LMI and give flexibility?
2. Repayments under stress – can you still afford them with a 3% APRA buffer on the rate?
3. Cash buffer – will you have at least 3–6 months of total loan repayments in offset after the equity release?

If any of these fail, the safe answer is: release less, or not yet.