Bidding on Someone Else's Behalf: An Agency Authority Checklist
How Should an Agency Manage Someone Bidding on Behalf of Another Person?
A procedure for verifying the real purchaser, reviewing representative authority, allocating the correct bidder record and avoiding auction-day disputes.
Key Takeaways
- Identify the real buyer. Do not assume the person holding the paddle or phone is the purchaser.
- Check the form of authority. Individuals, companies, trusts and legal agents can require different documentation.
- Verify both role and limits. A representative's identity does not alone prove power to bid for someone else.
- Align the bidder record. The auctioneer and controller must understand whose bid is being accepted.
- Resolve ambiguity before bidding. Unclear authority can create contract and record disputes after the hammer.
What Does Bidding on Behalf of Another Person Mean?
A person may physically raise a bidder number or give bidding instructions by telephone without being the legal buyer. They may be acting for a family member, an absent individual, a company, a trustee or another entity.
The agency needs to know the identity of the participant making the bid, the intended purchaser and the source and scope of authority. Do not conflate these roles in the bidder register or sale documentation.
A friend or family member bids
Confirm the legal buyer's details and the appropriate written authority under local law.
An individual bids for a company
Check the company details and evidence that the person has authority to act for it.
A person bids in a different legal capacity
Confirm the correct purchaser entity and have the buyer's legal adviser clarify how the acquisition should be documented.
A licensed agent or attorney acts
Identify whether qualifying agency authority or power of attorney applies, and keep the necessary evidence available for the auction.
What Documents and Details Should Be Checked?
| Question | Agency check | Why it matters |
|---|---|---|
| Who is the bidder in the room or online? | Verify the participating person using the appropriate lawful process. | Identifies who is carrying out the bid. |
| Who is the intended purchaser? | Check the legal name, address and any company or trust information required. | Avoids contracting with the wrong entity. |
| What authorises the representative? | Review the letter, power of attorney, agency appointment or other accepted evidence. | Shows the legal basis for representative action. |
| Is the authority specific enough? | Check the relevant property or scope and any stated restrictions; obtain legal advice if ambiguous. | Reduces disputed instruction or purchaser issues. |
| How will the bid be attributed? | Use the correct bidder registration, number and auction control record. | Preserves traceability of accepted bids. |
| How will the contract be signed? | Agree the lawful execution and communication pathway before auction day. | Avoids post-auction signing delays. |
How Should the Agency Manage a Representative Bidder Step by Step?
Identify the arrangement
Ask whether the participant bids personally, jointly or for someone else. Establish the proposed legal buyer early.
Checkpoint: The buyer and representative roles are distinct.Request the appropriate authority
Direct the buyer or their adviser to provide the right written authority or evidence under applicable law.
Checkpoint: The basis for representation is documented.Verify identity and legal entity
Review acceptable evidence and the details required for the actual purchaser and the person bidding.
Checkpoint: Names and entity identifiers are consistent.Confirm the approved method
Determine whether bids are made in person, online or by telephone representative. Configure supported access accordingly.
Checkpoint: The method matches the authorised arrangement.Approve and allocate the number
Complete local bidder registration and assign a clear identifier to the appropriate participant record.
Checkpoint: Auctioneer and scribe can identify accepted bids.Brief the auction team
Explain the representative relationship and any necessary operational controls while limiting unnecessary exposure of personal data.
Checkpoint: The bidder record and auction conduct align.Complete the contract handover
Confirm the purchaser, signing authority, deposit arrangements and accepted bid history promptly after the result.
Checkpoint: The executed transaction matches the approved arrangement.What Is Different for Individuals, Companies and Phone Bidders?
In NSW, a person bidding on another individual's behalf generally presents a letter with the principal's name, address and identification reference. Company bidding needs the appropriate company letterhead authority and ABN information. A qualifying licensed buyer's agent or person holding power of attorney may rely on a different permitted authority basis.
For a telephone bidder, do not assume the person speaking on the phone and the person placing the bid are the same registered participant. The representative relationship must be clear. In Queensland, the bidder register has requirements for details of persons giving telephone instructions.
In New Zealand, the REA says a licensee bidding by telephone for a buyer should obtain written permission and give it to the auctioneer. A representative in the room should also have permission; the appropriate form of authority depends on the arrangement.
Official guidance: NSW representative bidding rules | Queensland bidder registration regulation | NZ guidance on bidding for others
What Common Authority Problems Should Be Escalated?
| Problem | Risk | Suggested response |
|---|---|---|
| Different purchaser names on documents | The successful buyer may not match the registered principal. | Resolve the identity and legal buyer with the buyer's adviser. |
| Authority sent as an informal message | The document may not satisfy the statutory or auction requirements. | Request the applicable form before approval. |
| Company nominee without evidence | The individual may have no authority to commit the entity. | Check accepted corporate authority and company information. |
| Unclear phone bidding instructions | The representative may act outside the buyer's intent. | Clarify instructions, call procedure and the limits of authority. |
| Registration prepared under the representative only | The actual purchaser may be absent from required records. | Correct the buyer/representative relationship before bidding. |
| Attempted last-minute substitution | The new representative may not have been authorised or approved. | Pause the substitution pending the necessary checks and auctioneer direction. |
Decision point: If the legal purchaser or authority is uncertain, an agency should not manufacture a quick interpretation. Escalate to the responsible auctioneer and qualified legal adviser.
How Should the Result and Records Be Handled?
After an accepted successful bid, confirm that the contract identifies the correct legal purchaser and that the signer has the necessary authority. The agency should not assume that a person authorised to place a bid automatically has every power needed to sign documents on the purchaser's behalf.
Maintain a clear relationship between the principal, representative, bidder number and accepted bid record. Protect any personal identifiers, copies of letters or authority evidence using the applicable privacy and retention requirements.
Example: A sister bids for her brother at an NSW onsite auction. Staff must review the proper authority and details before giving the appropriate bidder number. If she becomes the successful bidder, the post-auction documentation needs to reflect the brother's intended purchaser status, subject to the contract and the legal advice received.
Frequently Asked Questions
Can someone bid for a family member at a property auction?
Often yes, but appropriate registration and written authority may be required. In NSW there are specific letter-of-authority requirements.
Is a text message enough to authorise a representative?
Do not assume so. The accepted form of authority depends on the jurisdiction and circumstances; use the required document and seek legal advice where ambiguous.
Can a person use power of attorney?
A valid relevant power of attorney may provide an alternative basis for acting, but its authority and application should be checked before the auction.
Who should appear as the successful purchaser?
The correctly identified legal buyer under the authorised arrangement and the contract, not automatically the person who physically raised the bidder number.
Does a registered representative automatically have signing authority?
No. Bidding authority and contract execution authority can differ. The agency should confirm the lawful signing arrangements separately.
How Does Auctions Live Help Record Representative Bidding Arrangements?
A digital bidder record can help staff maintain a clearer distinction between the participant, the purchaser and the auction activity.
Auction Infrastructure That Supports the Process
Auctions Live supports different bidder registration types and bidding methods, with document review and approval in the PC Console. When Phone Bidding via an Agency Representative is configured on eligible Onsite or Multi-Lot listings, the team can assign the representative and manage the resulting live bidding pathway.
The system supports operational record keeping, not legal interpretation of a power of attorney, company mandate or trust structure. The agency remains responsible for the proper purchaser details, valid authority and post-auction contract execution.
Explore Auctions LiveRelated Auctions Live Knowledge Hub Guides
These related resources provide more detailed platform instructions without repeating those procedures in this article.
Important information: This article provides general operational information for real estate professionals, not legal or regulatory advice. Auction registration, identification, authority, privacy, record keeping and professional requirements vary by jurisdiction and sale circumstances. Australian AML/CTF customer due diligence for designated real estate services is separate from statutory auction registration. Agencies should check current guidance, obtain professional advice where needed and apply their own documented procedures. Product features depend on the relevant listing configuration and account settings. No technology guarantees a sale, higher price, clearance rate, more bidders or uninterrupted operation. Information reviewed October 2026.
Posted 31st October, 2026