The agent who says your house is worth the most clearly knows the market best.
That is what most sellers believe when three appraisals come back forty to sixty thousand dollars apart. It feels like common sense. More market knowledge should mean a more accurate number, and the agent who arrives at the biggest figure must simply be the one who has done their homework properly.
Why the Appraisal Spread Rarely Gets Challenged
When a seller gathers three appraisals for the same property, the results are rarely a tight cluster around one figure. The spread is frequently wide enough that at least one number cannot be close to right. Sellers seldom stop to consider which. The default is to believe the highest one, largely because it lines up with what the seller wanted to hear in the first place.
Beyond being a valuation, an appraisal always carries a second function: it is a pitch for the mandate, whether or not the agent frames it that way. Two agents can walk through an identical property, review identical comparable sales data, and still arrive at wildly different figures, because one is genuinely pricing the house while the other is pricing their own chance of winning the listing. Sellers who grasp this early tend to interview agents very differently For anyone weighing up their options before signing anything keep reading is worth a look before that first meeting. Either way, the pattern tends to hold regardless of which agent a seller speaks to first.
Why the Highest Number Is not the Most Accurate One
Quoting a high number is not evidence of deeper market insight. More often it reflects a readiness to say whatever secures the mandate. That does not require deliberate dishonesty from the agent. Many genuinely believe the optimistic figure, at least until the campaign gets underway and the market tells a different story. Whatever the intent behind it, the seller still ends up appointing an agent on the strength of a number that was never really about the market.
What makes this uncomfortable is that sellers rarely find out until the campaign is well underway, once the property has sat on the market for weeks without the level of interest the original appraisal implied it should get. A closer look at how this plays out shows the pattern clearly Anyone weighing up how much to trust an early appraisal discover more puts some useful structure around this decision. Either way, this is the kind of thing worth knowing before the first inspection, not after.
What Separates a Reliable Appraisal From an Optimistic One
The appraisals worth trusting are rarely the ones stated with the most enthusiasm. They are the ones supported by specific comparable sales, recent settlement data, and an honest account of what buyers have actually paid for similar properties nearby in recent months. An agent who can walk through the evidence behind their number is doing something fundamentally different to one who simply asserts a figure with confidence. Confidence of delivery and accuracy of number are not the same thing, and sellers who cannot tell the difference tend to select for the wrong one.
There is a simple test for this. An agent with a genuinely defensible number can usually name the specific sales they are comparing against, within a reasonable timeframe and a comparable location. An agent relying mainly on optimism tends to speak in generalities about the market being strong, without pointing to anything specific that supports the figure they have just quoted.
Confidence is cheap. Comparable sales data is not.
What Sellers Should Be Evaluating Instead
The right question is rarely which agent believes the property is worth the most. It is closer to which agent has a genuine strategy for reaching real market value, and which one is willing to have an honest conversation if the campaign does not move at the quoted figure straight away. How an agent has previously handled a mid-campaign price adjustment tends to say far more than any number offered at a first meeting ever could.
This is also where a seller can learn the most simply by asking directly. An agent willing to discuss what happens if the first few weeks do not go to plan is behaving very differently to one who has only ever talked about the upside.
What Sellers Usually Want to Know
What explains the gap between appraisals on an identical property?
Appraisals combine genuine market judgement with an incentive to win the listing, and different agents weigh those two things differently. The spread between quotes often reflects that incentive as much as it reflects the property itself. An agent under pressure to secure new business has a reason to lean optimistic that has nothing to do with the comparable sales in the area.
Is it ever safe to just go with the highest number quoted?
On occasion, yes, but only when the evidence behind it earns that trust, not because it happens to be the biggest figure quoted. A high number backed by real comparable sales bears little resemblance to one offered purely to secure the business, and asking what it is actually based on is the only way to separate the two.
What should sellers ask an agent instead of what is it worth?
Asking what evidence supports the number, and what the plan of the agent is if the property does not attract offers at that figure early on, tends to reveal far more than the number itself. It also tends to separate agents comfortable defending their figure from agents who were hoping the question would not come up.
Is a lower appraisal figure a sign of a weaker agent?
Not necessarily. A lower, well-supported figure from an agent who can walk through the comparable sales behind it is often a stronger signal than a higher figure with no evidence attached. Sellers who filter agents purely on the size of the number they quote are optimising for the wrong variable entirely.
Rather than a true measurement of the house, an appraisal is really an opening bid for the listing itself, and sellers who recognise this early tend to choose very differently to those chasing the highest figure. Across the Gawler District and the northern Adelaide corridor, where the spread between agent appraisals can be just as wide as elsewhere in Adelaide, this distinction matters more rather than less, given how fast a mispriced campaign can lose momentum where comparable listings surface close together.