Hi - are you American? The reason I ask is that you describe them as "real estate" agents, and to say that they don't work the same here as they do in the US. Here you really need to be signed on with as many agents as possible as they will only show you properties whose owners have registered with them. It's not like in the US where they can show you everything that's on the market. So really you want to be registering with all the agents in the area you're looking for and calling them on a regular basis so they know you're keen and if anything good comes up you'll hopefully get first dibs. If you stick with one agent you may miss the perfect property.