What Happens at Exchange of Contracts in NSW?

Written by: Marcus ThornePublished by: Sell My House PrivatelyLast reviewed June 2026

Capsule Answer

Exchange of contracts is the critical moment in a property transaction when identical, signed contracts are formally swapped between the buyer and the seller, locking in the price and terms, and making the sale legally binding.

The Exchange Procedure and Legal Swapping

Before exchange, either party can withdraw from the transaction without penalty.

During the exchange process:

- The buyer signs their copy of the contract.

- The seller signs their copy.

- Legal representatives swap the signed documents.

- The buyer pays the required deposit.

Once the exchange is completed, the price is legally locked in and the contract is binding.

Holding the Transaction Deposit in Trust

The buyer's deposit (typically 10% or 5%) is paid upon exchange. This deposit is held securely in the trust account of the vendor's solicitor or conveyancer until settlement day.

Sellers Obligations Post-Exchange

Once contracts are exchanged, the seller must maintain the property in its current condition until settlement day. The risk of property damage remains with the seller until settlement or possession.

Sellers must keep their building insurance policies active until the transfer is completed in PEXA.

Conveyancer vs Solicitor: Selecting Legal Representation in NSW

When selling property in NSW, you can hire a licensed conveyancer or a qualified solicitor. Licensed conveyancers are governed by the Conveyancers Licensing Act 2003 (NSW) and specialize in property transfers. Solicitors are governed by the Legal Profession Uniform Law (NSW) and hold broader qualifications.

If your transaction involves complex disputes, probate litigation, or family law court proceedings, hiring a solicitor is recommended, as they can provide advice on tax laws, estate planning, and represent you in court.

For standard off-market treaty sales, licensed conveyancers provide efficient, cost-effective service in PEXA.

Exchange of Contracts under the Conveyancing Act 1919

The exchange of contracts is the critical moment when a property transaction becomes legally binding. In NSW, this is governed by the Conveyancing Act 1919 (NSW). Two identical copies of the contract of sale are signed, one by the buyer and one by the seller, and physically or digitally exchanged.

The buyer pays the agreed deposit (typically 10%) into the seller's solicitor's trust account.

In a private sale, to ensure transaction safety and bypass the statutory 5-day cooling-off period, the buyer's solicitor must sign a Section 66W certificate, making the contract unconditionally binding immediately at exchange.

Statutory NSW Guidelines for NSW conveyancing laws

All property sales in New South Wales must follow the Conveyancing Act 1919 (NSW). This rule applies directly to your transition involving NSW conveyancing laws.

Sellers must attach specific documents to the Contract of Sale before advertising. These documents protect both parties.

Mandatory attachments include:

- A current Land Registry Services title search copy

- A Section 10.7 planning certificate showing zoning rules

- Sewerage service diagrams from Sydney Water

- Strata certificates (if selling a strata title unit)

For relationship separations, transfers comply with the Family Law Act 1975. For deceased estates, executors must obtain probate under the Succession Act 2006. The final transfer is settled securely online.

PEXA Digital Settlement Protocols for NSW conveyancing laws

Property settlements in New South Wales must complete electronically. Conveyancers coordinate the transaction securely in the PEXA digital workspace. This workspace links banks, solicitors, and the land registry.

On settlement day, the PEXA system performs three tasks:

1. It calculates rate adjustments between buyer and seller.

2. It discharges the existing mortgage automatically.

3. It transfers the clear title to the buyer.

Funds are wired in real time. Outgoing mortgages are paid off instantly. The remaining cash goes directly to the seller's account. Title transfer occurs at the same time, ensuring total transaction safety.

Frequently Asked Questions

Disclaimer: The information on this page is general in nature and does not constitute financial, legal, or tax advice. Property sale decisions are significant and individual circumstances vary. We recommend speaking with a licensed conveyancer or solicitor for legal matters, and a registered financial adviser or tax agent for financial and tax matters. Links to external legislation and government resources are provided for reference only.

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