What Is a Void Contract in Queensland Real Estate? Definition and Agent Guide

A void contract is one that has no legal effect from the moment it is purportedly formed — it is, in law, as though the agreement never existed. It cannot be enforced, ratified, or sued upon. In Queensland real estate, this most commonly arises when an agent acts outside the authority granted by their appointment, or when a contract fails to satisfy the foundational requirements of valid formation. Understanding the void contract is not academic housekeeping; it is operational knowledge that protects your commission, your client, and your licence.

How Void Contract Works in Queensland Real Estate

The void contract is a creature of general contract law, but its most practically significant expressions in Queensland property practice are shaped directly by the Property Occupations Act 2014 (Qld) (the POA) and its predecessor, the Property Agents and Motor Dealers Act 2000 (Qld) (PAMDA). The introduction of the Property Occupations Act 2014 (Qld) on 1 December 2014 was seen as a means of simplifying the process for licensing and appointing real estate agents and for the formation of residential contracts in Queensland.

To understand why a contract can be void from the outset, start with the concept of authority. An agent in Queensland does not have inherent power to bind a vendor. That power is conferred by a properly executed appointment — in practice, the Form 6 appointment document under the POA. When real estate agents are appointed in Queensland, they must use the Form 6 contract, which provides clear details regarding their services, expectations, and payment structures, ensuring transparency for both parties. If an agent purports to execute or vary a sale contract outside the scope of what their appointment authorises — for example, by agreeing to a price, term, or condition not sanctioned by the vendor — the resulting agreement may have no binding force on the vendor at all.

Void contracts differ critically from voidable contracts. A voidable contract is valid and subsisting until one party exercises a right to set it aside — for example, by exercising the five business day cooling-off period available under the POA for residential property sales. The POA applies to “relevant contracts” signed on or after 1 December 2014, and the definition of “relevant contract” continues to mean a contract for the sale of residential property. A void contract, by contrast, requires no action to unwind — there is nothing to unwind. The parties are restored to their pre-contract positions automatically, and no rights or obligations arise under the purported agreement.

Under general Queensland contract law, a contract will be void where one of the essential elements of a binding agreement is missing entirely: mutual consent, consideration, legal capacity, or legality of purpose. In real estate practice, the most common voidness triggers are not philosophical abstractions — they are procedural failures with very real commercial consequences.

Why Void Contract Matters for Queensland Real Estate Agents

The most immediate practical consequence of a void contract in Queensland real estate is the loss of any entitlement to commission. An agent’s right to be paid flows from a valid appointment and the completion of a sale under that appointment. If the sale contract is void — because the agent exceeded their authority, because the appointment itself was defective, or because the agreement lacked proper execution — there is no valid sale, and no commission falls due. This is not a technicality a court will relax; it is a hard legal outcome.

The POA brought significant changes to the way real estate agents conduct the sale of residential property from 1 December 2014. Among the most consequential of those changes was the restructuring of appointment formalities. The introduction of the Act made some aspects of the land transaction process more efficient by reducing the number of disclosure requirements and the forms used, which led to a reduction in disputes in relation to the enforceability of contracts. However, reduced administrative complexity does not mean reduced legal risk — it means the remaining requirements carry even more weight.

The consequences extend beyond lost commission. Where a void contract has been acted upon — for example, where a buyer has paid a deposit believing a binding agreement exists — the parties must attempt to restore the status quo. Deposits paid under void contracts are recoverable, but the practical task of unwinding financial arrangements, notifying lenders, and managing client expectations creates significant reputational damage for the agent involved. A principal is also exposed to liability claims from vendors whose property was effectively off the market during the void transaction’s lifespan.

Agents operating in multi-agent environments or running conjunction arrangements face compounded risk. Where the agent who purportedly formed the contract was not the appointed agent for that transaction, any commission-sharing arrangement also collapses. The void contract does not simply affect the agent who made the error; it taints everything downstream from it.

The Appointment Requirement: Where Void Contracts Most Commonly Arise for Queensland Agents

The single most common source of void contract risk in Queensland real estate agency is a defective or absent appointment to act. The POA requires that before an agent can act for a client in a property transaction, a formal appointment must be in place. The Act includes provisions regarding the appointment of agents. The appointment must satisfy the Act’s requirements as to form and content — including specification of the services to be provided, the commission payable, and, where applicable, the duration and exclusivity of the arrangement.

Defective Appointments

An appointment that is missing mandatory content, has not been signed by both parties, or has not been given to the client in a signed copy may be ineffective under the POA. The Act addresses the consequences of “other ineffective appointments and reappointments.” Where an appointment is ineffective, the agent lacks the authority to form any binding sale agreement on the vendor’s behalf. Any sale contract they purport to bring into existence may consequently be void.

This is not a risk confined to newly registered salespersons. Experienced agents operating under time pressure — particularly at the end of a marketing campaign when a buyer is ready to sign — sometimes proceed with a buyer’s offer believing their appointment is in order, only to discover that the Form 6 was unsigned, that the property address was incorrect, or that the appointment had expired. None of these defects attract sympathy in a dispute; courts apply the requirements strictly.

Execution Requirements and the Sale Contract Itself

Beyond the appointment, the sale contract itself must be properly formed and executed. A contract for the sale of land in Queensland must be in writing and signed by or on behalf of the parties. Where an agent signs a sale contract purportedly on behalf of a vendor, they must have actual authority to do so. A verbal instruction from a vendor, a text message confirmation, or an assumed authority derived from a general agency relationship will not suffice for this purpose.

The legislative shift from PAMDA to the POA also changed what the contract must contain. The requirement to attach Body Corporate and Community Management Act 1997 (Qld) Form 14 Information Sheets to contracts for the sale of residential property was removed, and the warning statement was incorporated into the sales contract itself. This simplification means agents and vendors must be especially careful that the current-form REIQ contract is in use and that all required statements are present. From 1 December 2014, parties should use the new form of REIQ contract for residential property. An old-form contract used after the POA commenced may, depending on the deficiency, render the agreement void or expose the seller to penalty.

Agents Acting Beyond the Scope of Their Appointment

Even a validly executed appointment does not give an agent unlimited authority. The appointment defines the scope of the agent’s authority — the property, the price range, the acceptable terms. An agent who:

• accepts an offer on terms the vendor has not authorised (for example, agreeing to leave chattels not included in the listing)
• extends the settlement period without vendor instruction
• presents a contract with a purchase price below the vendor’s stated reserve, without express authorisation

…may be acting outside the bounds of their appointment. Where that overreach goes to the fundamental nature of the agreement — where no reasonable construction of the appointment could authorise the act — the contract formed may be void for want of authority.

Many agents insist that a conjunctive agent be noted on the contract of sale because it can be prima facie evidence that there is a listing agreement and effective cause of sale. The Act makes it clear that, where the appointment is to be a sole agency or exclusive agency, the agent must first discuss with the client the proposed term, and the client can negotiate up to 90 days, with consequences if the property is sold by someone else during this term. This requirement to have a current, properly scoped appointment is non-negotiable.

What Queensland Agents Need to Know About Void Contract

Recognising and avoiding void contract situations requires discipline at the point of appointment and again at the point of contract formation. The two moments are distinct but equally critical.

At the Point of Appointment

Every appointment must be completed in full and signed by the client before the agent takes any action on the vendor’s behalf. A signed copy must be given to the client. The appointment must accurately describe the property, specify the commission rate or fee (a requirement under the POA’s “other requirements — commission” provisions), and reflect the actual terms under which the agent is instructed to operate. Where the scope of instruction changes — for example, the vendor adjusts the asking price or adds conditions of sale — the agent should consider whether a variation to the appointment is required to ensure their authority remains current.

Exclusive and sole agency appointments require particular care. Exclusive listings can now be for up to 90 days instead of 60. An agent who continues to market a property under an expired exclusive appointment and then presents a sale contract may find their appointment is spent — and with it, any claim to commission and any authority to form a binding agreement. Diarising appointment expiry dates is not optional.

At the Point of Contract Formation

When presenting a sale contract for vendor signature, the agent must ensure:

• the REIQ contract in current use under the POA framework is being used
• all required statements are included in their prescribed form
• the vendor signing the contract has the legal capacity and authority to do so (relevant where the property is held in a company, trust, or jointly)
• the agent is not signing on the vendor’s behalf unless expressly authorised to do so in writing

The new form of contract contains certain changes, including that title encumbrances must be properly disclosed — it is not sufficient to state “refer to title” or “search will reveal.” Agents are not conveyancers and are not expected to perform title searches, but they must understand what their contract requires and flag incomplete disclosures to their vendor before signing.

Void vs Voidable: Maintaining the Distinction

The distinction between void and voidable has practical consequences when advising clients. A buyer who exercises the five business day cooling-off period under the POA is terminating a voidable but otherwise valid contract — the agreement existed, and a 0.25% termination penalty may apply. A termination penalty of 0.25% of the purchase price applies if the buyer terminates the contract during the statutory cooling-off period. A void contract, by contrast, never created any rights or obligations, so there is no termination penalty and no valid agreement to terminate. Telling a client that their cooling-off period “terminated” a void contract is legally incorrect and potentially misleading.

Agents who identify a potential void contract issue — whether arising from their own appointment documents, from the conduct of a conjunction agent, or from an unsigned or defective sale contract — should advise their vendor and buyer to seek independent legal advice promptly. The agent’s role is to identify the risk, not to resolve it.

What This Means for Queensland Agents

The void contract is not a theoretical concept — it is a live risk in every transaction where the appointment has not been reviewed, the sale contract has not been checked, or an agent has acted on a verbal instruction. The consequences are severe: no commission, potential liability to clients, and possible disciplinary exposure under the POA for acting outside the authority of a properly executed appointment.

The practical discipline is straightforward. Treat the Form 6 appointment as your foundation document in every transaction. Confirm it is current, complete, and properly executed before presenting any offer. Use the current REIQ contract form and ensure all required provisions are in place. Where your authority to act is unclear — where the instruction has changed, where multiple principals are involved, or where you are acting in conjunction with another agent — get the instruction in writing and confirm it against your existing appointment before proceeding.

The POA replaced the Property Agents and Motor Dealers Act 2000 in relation to residential property. Any new contract formed for property intended for residential purposes must comply with the Act. Every agent practising in Queensland is operating within that framework. Knowing where the void contract risk lives within it — at the appointment, at the scope of authority, and at the point of execution — is the competency that separates agents who close cleanly from those who close to disputes.