I completely agree with previous posters who indicate that you need to choose an agent and stick with that agent. First and foremost, it is the right thing to do. Only if you accidently end up in an situation where your buyer agent is failing to perform should you think about changing agents midstream. You would have a very hard time getting the builder to recognize your change. The builder will be bound to recognize the first agent you choose and will not agree to recognize the second.
Experience is certainly to be valued, but I donâ€™t recommend you choose one agent over the other solely on past production. Actually, I think that is an all too common mistake in choosing an agent. Hire based on skill, commitment, availability, knowledge and experience as a package. A dynamite negotiator with a great mentor and an understanding of new construction may have more total value points than an agent with a lengthy list of resale transactions. Resale experience will add some value to the mix; but your focus is new construction. If either agent has direct experience as a buyers agent in new construction, discuss with that agent what he/she did to help their buyer in the transaction. Find out in what way the buyer benefitted from the representation.
You buyer agent will need to have some familiarity with new construction and the sales process in new construction. Otherwise, how will you or she/he know you achieved a valuable concession from the builder? Your agent needs to be reasonably available for you, and use communication tools that work well for the two of you together. Which agent will be aggressive and persistent with a smile to achieve the best upgrade package for you? Builders may often lead you to believe there is only one way or one answer. Which agent will be a savvy prober to root out alternative options? I recommend you place a high value on probing, follow up and negotiation skills when choosing an agent to represent you in new construction. Think about who they need to interact with, what they need to accomplish, what they need to know to accomplish that goal, and if they are sufficiently motivated and available to do so.
1) Who listens to you the most? A good realtor listens and then talks for the same length of time about whatever..a great realtor listens 90% of the time, and speaks 10% of the time, with conversation that helps you.
2) If it is new construction, make sure the Realtor understands what it takes to build, and good construction practices...you need a person to be your eyes and ears and helps you avoid issues specific to new home construction such as sheetrock not done right, shortcuts in construction...you want a person who is experienced to have a good eye for writing up a punchlist.
I understand you problem and you're not the first.
The builders normally only let the buyer sign in with one realtor. Period. So, that ends the first debate.
Second, I would ask each of the agents to give you a list of their most recent 3 buyers that they represented and call them. Ask pointed questions about that agent. This is one way to get other people's opinion about that agent. Also, (if in California) you can go to http://www.dre.ca.gov and check their license for any past citations.