Due diligence: Seek a Land Information Memorandum (LIM) for the property, it is issued by the local council with description of the land title, the permitted uses of the land, official boundaries, environmental risks like flooding, etc. you should ensure that the actual owner is selling and know their reason for selling.
Seal the deal: This is the conveyance process of transferring ownership of the property. It is vital to involve your lawyer through this process to help with the legal aspect of sealing the deal.