To get this trophy, you need to purchase a property on your first turn and then have someone land on it before the end of the turn. Whether this means the end of the round, or at any point before your next turn is unclear.
This is easiest with a six player game. Try to be the person to go first, buy a property, and then just wait. The odds will generally be on your side for this. If everyone skips past your property then you can just start a new game and try again. As long as you go before most of the other players, you've got pretty decent odds of someone landing on the property.
While doing this, you'll likely also unlock the "Pole Position" trophy.