I recently became a snow removal sub for a company that has the landscape maintenance contract with a coporate office complex. He did some hardscape work for them, then had the opportunity to bid on the maintenance contract, which he won. He does none of the work except for snow removal. This got me thinking that this might be a great way to do business, bidding on commercial contracts and subbing everything out. After doing a search on lawnsite, I realize that this is hardly a new concept. But my question is, do any of you do this as the primary revenue for your business? Also, in PA where I live, do you need a GC license to do this? What are your thoughts, both pros and cons, on this concept? I would appreciate any input on this topic.