During the boom-time it was possible for estate agent to charge as much as 18% of the sales price!
As a result of the current slowdown and competition from internet based marketing models mentioned previously, margins selling Property in Spain have come back down to earth and it is quite normal to be quoted a fee of anywhere between 3% and 5%.
One thing to be careful about when dealing with an estate agent is the possibility that they will request that you sign an exclusivity contract i.e. that you will not contract any other estate agent or company to market your property.
While you can, without doubt, negotiate a lower commission rate if they are given exclusive rights to market the property this has to be balanced against the benefit to be gained by being able to market the property across a number of agencies and internet sites.
Any contract, be it exclusive or otherwise, should clearly state the commission fee the agent will charge for successfully marketing the property.
One of the main benefits of contracting a local estate agent is the possibility of them being available to show the property when you may be out of the country.
They will also know the best forms of local marketing such as which papers to place adverts in.
But you would be advised to ask them what forms of marketing they will be using to market your property to get a better idea.