The price guide is about to need evidence
NSW is rewriting how residential property can be marketed. Underquoting penalties rise, price guides become compulsory, and agents will have to show the sales behind the number they advertise.
The way residential property is marketed in NSW is undergoing one of its most significant changes in years. The Government has introduced tougher laws aimed at underquoting, misleading price guides and greater transparency for buyers.
For agents, the days of vague marketing strategies around price are becoming increasingly difficult. For vendors, the price strategy agreed with the agent will need to be supported by market evidence, and kept up to date throughout the campaign.
What follows is the detail — and a few things you can try for yourself, because the rules are easier to understand when you move the numbers around.
The crackdown on underquoting
Underquoting occurs when an agent advertises or represents a property at a price below the agent’s reasonable estimate of its likely selling price.
NSW Fair Trading has significantly increased its focus on the practice. The reforms substantially increase the potential penalty, with the new regime providing for maximum penalties of $110,000 or three times the agent’s commission, whichever is greater, once the relevant provisions commence.
Fair Trading is already inspecting open homes and checking what agents tell buyers against agency records, vendor discussions and advertising material. In September 2026 it reported that its taskforce had covertly attended almost 80 open homes during a two-month compliance operation.
What the maximum penalty becomes
Move the commission on a single sale and watch which limb of the test bites.
$110,000Three times the commission is $90,000, so the $110,000 maximum applies instead.
Illustrative only, and reflects the maximum available once the provisions commence rather than a penalty any particular conduct would attract.
Price guides will become compulsory
One of the biggest changes is the requirement for agents to include a selling price or price range in advertisements for residential property. It applies broadly to advertising the agent arranges.
Where will the price have to appear?
Select every channel you think is caught.
0 of 6 selected. Keep going: the requirement covers advertising the agent arranges, whatever the channel.
An exemption is proposed for a simple “For Sale” sign on or adjacent to the property — but if a price appears on that sign, it still has to comply with the pricing rules.
Importantly, as at 8 October 2026 these particular requirements have not yet commenced. NSW Fair Trading says they are expected to commence later in 2026, once the supporting regulations and forms are complete.
Agents will have to show how they arrived at the price
Another major change is a compulsory Statement of Information. An agent engaged to sell a residential property will have to prepare one using an approved NSW Fair Trading form, setting out the information supporting the estimated selling price, including the comparable sales relied upon.
Inside the Statement of Information
A plain-language view of what the form is expected to carry, and where it has to go.
A plain-language summary of the expected requirements, not the approved form itself.
This creates a much greater level of accountability. An agent will not simply be able to put a number on a property because it creates more enquiry. There will need to be a reasonable basis behind that number.
Comparable sales become even more important
Agents are already required to ensure their estimated selling price is reasonable. The reforms go further, requiring agents to consider the selling prices of comparable properties according to prescribed requirements when determining or revising the estimate, with greater record-keeping about how the estimate was calculated.
This matters because comparable sales are not simply about finding three properties in the same suburb. A proper comparison considers location, building, land or internal area, condition, aspect, floor level, parking, views, age, renovations, and the date of the transaction.
Two apartments. Same building.
Start them identical, then switch on what makes apartment B different.
Apartment A
$1,000,000 The baseline- Lower floor
- No parking
- Original condition
- South aspect
- Internal outlook
Apartment B
$1,000,000 Identical on every factor shown- No differences selected
Add a few differences. Floor level, parking, outlook and condition move value well beyond the address.
A hypothetical worked example to show how factors compound. The figures are illustrative and are not market data, a valuation, or sales evidence for any property.
Two apartments in the same suburb — or even the same building — can have substantially different values.
The price guide must move with the campaign
Property marketing is dynamic. What is known at the start of a campaign changes once buyers inspect and offers arrive.
Under the existing regime, if an agent’s estimated selling price is no longer reasonable, the estimate must be revised, the vendor notified in writing and the agency agreement amended. Advertising inconsistent with the revised estimate has to be corrected.
The new laws tighten this. Once the relevant provisions commence, an agent will not be permitted to advertise below the agent’s estimated selling price, the highest registered bid at an auction where the property was passed in, or a written offer rejected by the vendor solely because the amount was too low. Where a range is used, the bottom of the range cannot sit below those amounts.
How low can the guide go?
Choose one thing that has happened, then move the advertised price and watch where it stops being allowed.
$2,300,000 sits at or above $2,300,000, which is the agent's estimated selling price. Advertising at this price is fine.
Hypothetical figures, shown one event at a time for clarity. In a real campaign more than one of these can apply at once, and the highest of them sets the floor.
That could significantly change the way auction campaigns are conducted. If a vendor rejects a genuine written offer simply because the price is too low, the agent may no longer be able to continue marketing the property below that rejected amount once the provision takes effect.
“Offers over” remains a problem
NSW law already restricts agents from using expressions such as “offers over” or “offers above” a particular figure in residential property advertising. An agent also cannot tell a buyer that a property may sell below the agent’s genuine estimated selling price.
The obligation applies not only to what appears on the portals, but to what is said at the open home, on the telephone, and during negotiations.
Which of these can an agent say?
Six things buyers hear every weekend.
General guidance on the direction of the rules, not legal advice on any particular advertisement.
Advertising photographs must tell the truth
Pricing is only one part of property advertising law. Photographs, descriptions and representations must not be false or misleading.
An advertisement should not create the impression that a spectacular water view is visible from a property when the photograph was taken somewhere nearby. NSW Fair Trading recommends that photographs of surrounding amenities or scenery not taken from the property be clearly identified as a location shot.
Claims about distance and facilities should be factual. “2 km from the beach”, where accurate, is considerably clearer than “close to the beach”. And an agent cannot advertise a property as being in a more desirable neighbouring suburb when it sits in another one.
Material facts still matter
Marketing is not only about what an agent says. Sometimes the failure to disclose something causes the problem. NSW agents have obligations concerning prescribed material facts they know, or ought reasonably to know.
Examples of prescribed material facts
Silence can breach the legislation as readily as a misleading statement.
A summary of examples, not the complete prescribed list.
A contract must exist before marketing starts
There is a basic requirement that sometimes gets overlooked. A residential property in NSW cannot simply be advertised for sale while the contract is still being prepared.
A proposed contract for sale must generally be available before the agent offers or advertises the property. Advertising, promoting the property, putting up a “For Sale” sign or otherwise representing that it is available can all amount to offering it for sale.
What has to happen first
Compare a compliant start with the way campaigns sometimes begin.
Correct. A proposed contract must generally be available before the property is offered or advertised for sale.
What this means for vendors
The legislation should not prevent an agent from trying to obtain the highest possible price. That remains the agent’s job. What is changing is the distinction between marketing aggressively and marketing misleadingly.
A vendor can still
- Choose an auction or private treaty campaign
- Reject an offer
- Change their expectations during the campaign
- Pursue the highest price the market will pay
But the advertising must
- Rest on a genuine evidentiary basis
- Reflect the agent’s real estimate
- Move when the campaign produces new evidence
- Be corrected online within a business day once non-compliant
My view
These changes will alter the psychology of property marketing in NSW. For years some campaigns have relied on generating exceptionally high enquiry by setting an attractive guide and allowing competition to establish the final value.
The Government’s new approach is effectively saying: if you believe the property is worth a particular amount, the advertising needs to reflect that belief — and you need evidence to support it.
That does not eliminate competitive bidding. A property can still substantially exceed its guide where genuine competition develops. But agents are going to have to be far more disciplined about how the guide is established, what they tell purchasers during the campaign, and how quickly the guide changes when new evidence emerges.
Choosing an agent used to start with “how much can you get me?” The better question is becoming “show me the evidence behind your pricing”.
What you should have in hand
Tick what you already have. The gaps are the conversation to have with your agent.
0 of 6 — tick what you already have before you list.
That is ultimately where professional real estate agency should be heading.
Alan Weiss
Principal, Weiss Real Estate. Licence 218396, independent contractor for eXp Australia.
0412 176 074 · alan@weissrealestate.com.au
Ask to see the evidence behind the number
If you are weighing up a sale in the Eastern Suburbs, I will show you the comparable sales behind my estimate, explain how I would price the campaign, and tell you what I think the market will actually pay. In person, at your home or a local café.
Or call me directly on 0412 176 074

