Property Valuation: How Lenders Assess Your Home's Worth
- A lender's valuation determines your LVR, your approved loan amount, and whether LMI applies — it is not the same as what you paid or what you think it's worth
- Lenders use three valuation methods: desktop (automated), kerbside, and full internal inspection — the method used depends on the loan amount, LVR, and lender policy
- If the valuation comes in lower than the purchase price, your borrowing capacity reduces — this can trigger LMI even if you planned to avoid it
- You cannot choose your lender's valuer, but you can challenge a valuation that appears incorrect
- A mortgage broker can sometimes identify which lenders have more favourable valuation databases for specific property types or locations
- Valuation risk is highest at auction, where you commit to a price unconditionally before the lender has confirmed their assessed value
Why the Lender's Valuation Matters More Than the Purchase Price
When you buy a property, you and the vendor agree on a price. But the lender's decision about how much they will lend you is based on their own assessed value of the property — which may be lower, higher, or the same as what you paid.
This matters because your LVR (Loan-to-Value Ratio) is calculated using the lender's value, not the purchase price.
LVR Valuation Gap Example You agree to pay $820,000 for a property. You have a $164,000 deposit (20%), expecting an LVR of exactly 80% with no LMI. The lender's valuer assesses the property at $790,000. Your LVR is now $656,000 / $790,000 = 83% — above 80%. LMI now applies, at an estimated cost of $12,000-$15,000. Your 20% deposit was insufficient based on the lender's assessed value.
The Three Types of Lender Valuation
Desktop Valuation (Automated Valuation Model / AVM)
An automated valuation generated by software that analyses comparable sales, historical price trends, and publicly available property data. No physical inspection is conducted — the valuer never visits the property.
Desktop valuations are fast (same day or next day) and are used by lenders for lower-risk scenarios: lower LVRs, standard property types, strong data availability in the suburb.
Reliability: Generally accurate for standard metropolitan properties with strong comparable sales data. Can be unreliable for properties with unique features, recent renovation, or in low-sales-volume areas.
Kerbside Valuation
The valuer drives to the property, conducts an external inspection, and assesses value based on the exterior condition, the street, and comparable sales data. No internal inspection is conducted.
Used for mid-range LVR scenarios or where the AVM result is borderline. More reliable than desktop for properties with strong streetscapes or external features but cannot account for internal condition or renovations.
Full Internal Inspection
A registered valuer visits the property, conducts a full internal and external inspection, assesses the condition, features, and any improvements, and produces a formal written valuation report.
Required for: higher LVR loans, higher value properties, unusual property types, and where the lender needs more certainty. Takes 3-5 business days from order to receipt of report.
Most reliable method — accounts for internal condition, quality of finishes, and any improvements or deterioration not visible externally.
What Valuers Look At
A property valuer assesses value based on:
Comparable sales analysis: Recent sales of similar properties in the same area. "Similar" means comparable in size, configuration, age, condition, and location. This is the primary driver of valuation.
Property characteristics: Land size, floor area, number of bedrooms/bathrooms, garage, outlook, aspect, and proximity to amenities.
Condition and presentation: Properties in poor condition or with deferred maintenance are valued lower. Recent renovations add value only if they are to a professional standard and reflected in comparable sales.
Location factors: Proximity to train stations, schools, shops, and parks. Distance from industrial areas, flight paths, or high-traffic roads.
Market conditions: Valuers reference current market conditions to assess whether comparable sales are tracking up, flat, or declining.
The critical principle: A valuer assesses market value — what a willing buyer would pay a willing seller in an arm's-length transaction. They do not assess what you paid. In a competitive market where you paid above comparable sales, the valuation may be lower than your purchase price.
When Valuations Fall Short
A valuation shortfall — where the lender's assessed value is below your purchase price — is most common in:
Auction purchases: You commit to a price unconditionally at auction. The lender's valuation occurs after you have committed. If the valuation is lower than your winning bid, you must make up the difference from your own funds or accept a lower loan amount.
Properties with unique features: A property with a swimming pool, extensive renovation, or unusual configuration may not have close comparable sales. The valuer defaults to conservative comparables.
Off-market or below-market purchases: If you purchase at an unusually low price (perhaps from a distressed vendor or family sale), the valuation may actually come in above the purchase price — which is fine, but the LVR is still calculated on the lower of purchase price or valuation.
High-rise apartments: Lenders and valuers apply extra scrutiny to high-rise apartments, particularly in suburbs with a large number of new completions. Valuations can be conservative relative to purchase prices.
What to Do If Your Valuation Comes In Low
Request a review: You can ask your broker to formally request a review of the valuation, providing evidence of comparable sales that the valuer may have overlooked. Valuers can and do revise reports when presented with relevant evidence.
Provide comparable sales evidence: Your broker or you can supply recent comparable sales that better reflect your property's value. The valuer is required to consider this evidence.
Try a different lender: Different lenders use different valuation firms and different automated models. The same property can receive different valuations from different lenders. Your broker may be able to identify a lender with a more favourable valuation methodology for your property type.
Accept the lower valuation: If the valuation is confirmed, your options are: increase your deposit to cover the gap, accept LMI if LVR has crossed 80%, or renegotiate the purchase price with the vendor (only realistic before exchange of contracts, not after).
Frequently Asked Questions
Can I get my own independent valuation?
Yes. You can engage a registered property valuer directly for a market appraisal or formal valuation report. This can be useful as evidence if you are challenging a lender's valuation, or as a due diligence step before purchasing. A formal independent valuation costs $400-$800.
Does the lender's valuation affect my stamp duty?
No. Stamp duty is calculated on the higher of the purchase price or the valuation for stamp duty purposes (which is usually the purchase price). The lender's valuation for mortgage purposes does not affect the stamp duty calculation.
How long does a formal valuation take?
A full internal inspection valuation typically takes 3-7 business days from when the lender orders it. Desktop valuations can be returned the same day or next day.
Written by Luke Drake | Authorised Credit Representative (CRN: 565112) | Frontier Finance Co