@Kal Seirafi as a commercial broker, I have a few thoughts.
1. Don’t ask residential agents for a commercial referral if you choose to go for large multi family deals. This is like asking a personal injury lawyer for an international tax attorney. However, if you are looking at smaller properties, that is not bad.
2. Choose a market and find who dominates that area. For example, Bull Realty is strong in Atlanta. Michael Bull has done over $6 billion and has a designated multi family division. The Kirkland Company is good in Tennessee and other Southeast markets as well.
3. An easy way to find out if a broker has good underwriting skills is to see if they have a designation called CCIM. I am currently earning my designation, and it takes at least two years. You also have to submit a portfolio of closed deals and experience in order to even apply to take the exam once your classes finish.
I am in the Louisville, Kentucky, area and happy to answer any questions if you want to PM me.
Happy hunting!