Agents where is the real line between residential and commercial

[Pete T.]

yes, I absolutely understand 4 units and fewer falls into the residential side and I get some commercial brokers might not want to deal in smaller 8 to 12 unit bldgs, but what service is provided representing a field that you are not familiar with.  Looking for feedback from others on bldgs represented by agents asking for pre Qual ltrs, showing comps, etc.