Vacant land purchases in Western Australia can be made through a variety of channels, including real estate agents, online marketplaces, and auctions. The process of purchasing vacant land in Western Australia typically involves the following steps:

1. Research: It's important to research the local property market and understand the characteristics of the land you're interested in purchasing, such as the zoning, size, location, and access to utilities.

2. Financing: Determine how you will finance the purchase, whether through cash or a loan. It's recommended to speak with a financial advisor or mortgage broker to understand your options and obligations.

3. Inspection: Before making an offer, inspect the property thoroughly and consider hiring a surveyor to evaluate the land boundaries and check for any issues such as encumbrances or contamination.

4. Offer and Negotiation: Make an offer through a real estate agent or directly with the seller. Negotiate the price and any conditions of the sale, such as settlement dates or inclusions.

5. Contract: Once an agreement has been reached, a contract will be drawn up and signed by both parties. It's important to have a lawyer review the contract to ensure it's fair and legally binding.

6. Settlement: The final step is the settlement, where the land title is transferred to the buyer and payment is made. This is typically done through a settlement agent or conveyancer who handles the paperwork and liaises with the relevant parties.

It's recommended to seek professional advice and guidance throughout the process to ensure a smooth and successful purchase.