Yes it's unethical. Second, why do you think he would accept your numbers if you told Bob a number and the contractor said he would only pay half? Were you telling Bob a high number so you could undercut him.At the moment, I'm sitting around without work, and nothing lined up in the near future. I received a phone call from another finish contractor (Bob) who I never heard of asking if I'd be interested in working on a job with him. I meet him at the jobsite, a 5000 sf custom home that has just been drywalled. He tells me he already bid the millwork at $***x , but the GC wants a bid for installing the huge cabinet package as well. Apparently, Bob is afraid of frameless cabinets, and the size of the house is more than he's used to doing alone (??). I gave him a guesstimate for the cabinets and told him I thought his millwork bid was about $2000 short if we were to split the whole thing. He called me later to tell me the GC was only willing to pay half of what I guesstimated for cabinets. I told Bob "no thanks". Now here's my question ... Is it wrong for me to contact the GC, throw in MY numbers and tell him I can do the whole thing ? I didn't know this house existed until Bob brought me in. And it is definitely over Bob's head, he hadn't even considered basing the round drywall corners or door hardware.
Why would you even have to ask if its unethical?