I'd be concerned that there's an existing plumbing issue and that's part of the reason it's being sold. Just go there. I got the project done, but it took me a little while longer than I had planned. Unless we are talking sub divided warehouse or something like that. Bill — yeah, that comment was meant to be a little tongue-in-cheek. I doubt you have that available, if the current water situation is just a lavatory. Adding a formal fixture meaning a real urinal gets you into all kinds of code issues -- bathrooms may have to be a minimum size, get inspected by the code enforcement guys, pay a fee for each additional fixture, etc -- but if it is totally private and no one will care you can just diy a "urinal.
There might be a problem if the drain pipe connected to the sink is too small to handle the flow from a urinal.
Suggest urinal drain hookup
Can you see the stack that the sink arm feeds into? Tags urinal. If this is off the table, are there any other solutions? I adjusted the flow on the valve down about hallway, and the same thing happened again. Imagine the physics if you put weight above the hole. Buy a five gallon bucket, some trash bags, and some cheap kitty litter, and one of these. It almost looks as though the surface of the porcelain is pitted, but it still feels perfectly smooth.