
A buyer can negotiate changes to a property contract after signing only if the seller agrees. Common amendments include extending the settlement date, changing deposit arrangements, agreeing to repairs, or varying included items. Without mutual written agreement, the original contract remains legally binding, and a buyer cannot unilaterally change the terms or withdraw without a lawful basis.
In Victoria, a signed Contract of Sale creates a legally binding agreement between the buyer and the seller. This means neither party can simply change the terms whenever they choose. Any amendments generally require the agreement of both parties.
At Red Door Conveyancing, we’re often asked about what can and can’t be negotiated after contracts have been exchanged. Here’s what buyers should know.
Is the Contract Legally Binding Once Signed?
Yes. Once both the buyer and seller have signed the Contract of Sale and it has been exchanged, the contract is generally legally binding.
This means both parties are expected to comply with the agreed terms, including:
- The purchase price.
- Settlement date.
- Deposit requirements.
- Special conditions.
- Inclusions and exclusions.
- Any conditions relating to finance or inspections.
Changing any of these terms after signing usually requires the consent of both parties.
What Can Be Negotiated After Signing?
Although a contract is legally binding, there are circumstances where buyers and sellers agree to vary its terms. Common examples include:
Extending the Settlement Date
Settlement may need to be delayed because of:
- Finance approval delays.
- Banking issues.
- Personal circumstances.
- Construction or moving delays.
If both parties agree, the settlement date can often be varied in writing.
Early Settlement
Sometimes both parties prefer to bring settlement forward. If the seller is ready and the buyer’s finance is in place, an earlier settlement may benefit everyone.
Repairs Before Settlement
If damage is discovered before settlement or issues arise during the final inspection, the buyer may ask the seller to:
- Complete repairs.
- Provide compensation.
- Adjust the purchase price.
- Agree to another suitable solution.
Whether the seller agrees will depend on the circumstances.
Changes to Included Items
Occasionally buyers request additional items remain with the property, such as:
- Outdoor furniture.
- Appliances.
- Garden equipment.
- Window furnishings.
Again, these changes can only occur if both parties agree.

Can a Buyer Renegotiate the Purchase Price?
Generally, once contracts have been signed, the agreed purchase price cannot be changed simply because the buyer has changed their mind.
However, there are limited situations where a price adjustment may be negotiated, including:
- Significant property damage occurring before settlement.
- Serious issues identified under a valid building inspection condition.
- Other circumstances specifically covered by the contract.
The seller is not obliged to accept a lower price unless the contract allows for further negotiation or they voluntarily agree.
What Happens If the Buyer Wants to Cancel the Contract?
A buyer cannot usually withdraw from a signed contract without legal consequences unless they have a legal right to do so.
Examples may include:
- A finance condition that has not been satisfied.
- A building or pest inspection condition allowing termination.
- Another contractual condition permitting withdrawal.
- A legal right available under Victorian property law in particular circumstances.
Attempting to terminate a contract without a lawful basis may result in financial penalties or loss of the deposit.
Why It’s Important to Seek Advice Early
If circumstances change after signing a Contract of Sale, it’s important to seek advice as soon as possible.
The earlier an issue is identified, the more options may be available. In many cases, practical solutions can be negotiated before the matter escalates into a dispute.
An experienced conveyancer can explain your rights, communicate with the other party, and help prepare any necessary documentation if changes are agreed.
Every property transaction is different, and contract terms should never be varied without proper advice. At Red Door Conveyancing, we assist buyers and sellers across Victoria with reviewing contracts, negotiating agreed changes, managing settlement timelines, and helping resolve issues that arise during the conveyancing process.
For questions and concerns about conveyancing contracts and information, call us on 03 8456 6797 or you can submit a contact form using this link.
Author
Joe Mattar is a seasoned conveyancer at Red Door Conveyancing. His extensive expertise in property law and transactional processes provides readers with clear, practical insights into conveyancing. Joe's articles aim to demystify the complexities of property transactions, ensuring clients are well-informed and confident.