The best way to find a real estate agent is to ask expats living in Costa Rica to recommend one that they had a good experience with. There are also several Costa Rica online forums where people share their experiences. Real Estate agents do not require a license so the quality of the agent varies significantly. Some members belong to a voluntary association known as the Costa Rican Board of Realtors but word of mouth and checking references is the best way to find a good real estate agent. It will also be to your advantage to use a real estate agent who has been living in Costa Rica for several years and in the area you are interested in buying property.
How do I find a good real estate agent ?