Fairfax Real Estate Agents: How to Choose the Best One Fairfax Real estate agents: Top tips for selecting the best one 1. Compare and Research Agents Comparing Fairfax agents and doing research on them can be a critical step in the buying or selling of a home. When there are so many real estate agents to choose, it’s crucial to do your research and compare them to find the one that best suits your needs. Research agents online. Find agents who are familiar with the Fairfax area, and have worked with clients in similar circumstances to yours. Look at testimonials