Are contractor costs higher for commercial buildings?
I’m just getting into rehab/remodeling, and for example, my contractor is redoing a flat roof and wants $250/sheet to install new plywood. That cost is to buy and install one sheet, so for a 3000 sqft roof, that adds up to a pretty penny just for new plywood. 

That seems high to me (even being in a major metro) but I’m curious if that’s just how it is with commercial jobs? I’m only familiar with residential pricing.
[{"id": "huasjbl", "text": "Parking, union labor, insurance requirements, freight elevators, longer payment terms, restricted hours due to tenant impacts, equipment loading and unloading, material and safety documentation are all much bigger items in the commercial world.", "replies": [{"id": "hub8y7x", "text": "Insurance alone will jack up the price significantly let alone all of these other factors.", "replies": [{"id": "hvnmr9u", "text": "I know a guy who has a tiny crew and just lays them cash.  They aren\u2019t insured.  He\u2019s never had an issue and has made it work pretty well for everyone.  Although, the projects take a lot longer to finish.", "replies": [], "depth": 3}], "depth": 2}, {"id": "huc8cwr", "text": "And even bigger issues in a metro zone.", "replies": [], "depth": 2}], "depth": 1}, {"id": "huatjoz", "text": "Yes.  On average, I think commercial work costs about 50% more than residential.", "replies": [], "depth": 1}, {"id": "hub1163", "text": "Commercial tends to be supported by higher skill levels, whereas anyone with a truck can (and will) bid to paint your house.", "replies": [], "depth": 1}, {"id": "hubicel", "text": "It is highway robbery out there.\nBeen in it 30 years \nThe times are very special.\nChit rolls down hill", "replies": [], "depth": 1}, {"id": "hubnu9o", "text": "Get multiple bids. \n\nAnd right now, you will absolutely be paying \u201cI am already busy tax\u201d\n\nI got a quote to repair 6 sq ft of damaged drywall - $2800 and $3200 for residential.", "replies": [{"id": "hubtzqs", "text": "Yeah this bid is from the contractor already doing other work on the building so I\u2019m assuming I\u2019m paying a captive audience tax.", "replies": [{"id": "hucnge3", "text": "Ask what he\u2019d charge to get out of the deal", "replies": [], "depth": 3}], "depth": 2}], "depth": 1}, {"id": "hubuu8x", "text": "It\u2019s tough. Labor, materials are strained and everyone has multiple jobs at once. I don\u2019t see this calming down in the near future.", "replies": [], "depth": 1}]