Bank Valuation vs Market Value: What Is the Difference?

A bank valuation and a market valuation are not the same number, and they are not trying to be. One estimates what a buyer would pay. The other estimates what a lender could recover. The gap between them is what decides how much equity you can actually use.

If you are working toward an investment property using the equity in your home, this is the number that moves everything.

The difference in one line each

Market value is what the property would sell for, driven by buyer demand and recent comparable sales. An agent appraisal is an estimate of this. It is free, and no lender will lend against it.

Bank valuation is what a qualified valuer, working for the lender, assesses the property is worth as loan security. It is deliberately conservative, because the lender is not asking what this could fetch in a good week, it is asking what it could recover if it had to sell.

Both can be correct at the same time. They are answering different questions.

Why the bank number usually comes in lower

Three reasons, and none of them are about your property specifically.

Valuers work from settled sales. The evidence available is typically 3 to 6 months old. In a rising market that lags behind. In a softening market it lags the other way.

The brief is risk, not price. A valuer assessing loan security discounts for anything that narrows the buyer pool: unusual layouts, restricted access, an oversupplied postcode, a niche block size.

Valuers disagree with each other. Two valuers on the same property routinely land 5 to 10 per cent apart, and the gap between bank and independent assessments has widened, in some cases to 10 to 20 per cent. A valuation is a considered professional opinion, not a fixed measurement.

The worked example, because this is where it gets real

Say your home would sell for $900,000 and your loan balance is $420,000. Most lenders will let you borrow up to 80 per cent of the value without lenders mortgage insurance.

On the market figure: 80 per cent of $900,000 is $720,000, less your $420,000 loan, leaving $300,000 of usable equity.

Now the bank valuation lands at $840,000, a 6.7 per cent variance and well inside normal. 80 per cent of $840,000 is $672,000, less your $420,000 loan, leaving $252,000.

A 6.7 per cent difference in the valuation removed $48,000 of usable equity, a 16 per cent cut to the number you were planning around. That is the entire point. The valuation does not move a little, it moves your deposit a lot, because the loan balance does not shrink with it.

This is why the figure you start from has to be the lender view, not the agent view. Run your own numbers here.

What to do when it comes in low

You have more room to move than most people use.

Ask which comparable sales were used, then supply better ones, along with dated renovation costs and receipts, a floor plan, and corrections if the record has the land size or bedroom count wrong.

Ask what a different lender panel would say. Given the 5 to 10 per cent spread between valuers, a second opinion is a legitimate strategy rather than shopping for a friendly number.

Then re-run your position on the lower figure before you commit to anything. A plan that only works at the optimistic valuation was never a plan.

The valuation people forget until it is too late

If you are buying a new build, the valuation that decides your outcome happens at the end, not the beginning. Lenders value the property at settlement, not at the contract price, once it is built, which can be 12 to 36 months after you sign.

In a softer market, shortfalls of 5 to 15 per cent on that completion valuation are not unusual, and the gap is covered in cash. Planned for at the start it is a buffer. Discovered near settlement it is a problem.

This matters more than it used to, because from 1 July 2027, under laws passed in June 2026, new builds keep full negative gearing and the 50 per cent capital gains tax discount, and established properties do not. More investors are looking at new builds, so more people are about to meet a completion valuation.

If you want the wider picture on how equity funds a purchase, start with our guide to using equity to buy an investment property, or read how we approach property investment strategy.

Frequently asked questions

Where this leaves you

The number that matters is the lender number, and it is usually lower than the one in your head. Start from that figure and the rest of the plan holds.