From what I was told its up to the city building department to allow power of attorney. For instance Monroe doesn't allow a power of attorney. I have to go there personally to pull the permit. As far as supervising I can't be at every job. I don't know a single gc thats gone to every job; unless there was a issue. There's a few subcontractors that I know use someone else's builders license. I just don't know what they charge. As far as saying its not hard to get a builders license that's your opinion. I appreciate the info though.I'm in Michigan and I'm not a lawyer, but I believe that's not true. Here is the relevant paragraph:
A corporation, partnership, association, limited liability company, or other entity that applies for a license, must designate 1 of its officers, partners, members or its managing agent as a qualifying officer. A qualifying officer is responsible for exercising the supervision or control of the building or construction operations and must maintain a license as an Individual Residential Builder or Maintenance & Alteration Contractor, as applicable.
You will note that the qualifying officer needs to supervise and/or control the operations, which you are not. I would talk to a construction lawyer if I were you.
It is NOT at all common in Michigan to rent out your Builder's License, so there is no market. I don't know of a single builder or sub renting their license from or to another company or individual. I can't imagine a legitimate contractor doing $8M in sales who can't afford one licensed employee. The license is not difficult to get, knowledge-wise, but there are background checks.