We were all set up to do our master bath remodel with a highly recommeded self-employed, fully licenses & bonded contractor, for a reasonable price. Then my oh so thoughtful (promise, that's not sarcastic, he really is thoughtful) BIL told my husband, "Oh no, that's too much. I've got a guy that has done work for us. He can do it for half that." Against my better judgment I acquiesced (sp?) and let hubby hire him.
So, the guy's nice enough, works his tail off, shows up on time and works full days and all, but there's a bit of a language barrier (that I didn't realize at the time, until later when we discovered things he misinterpreted), and he's not very experienced.
He walled up our shower before checking to see what kind of fixtures (showerhead and handle) we had bought, so when it came time to install it he told me he'd have to take off all the tile on the wall again to adjust the plumbing fittings to work with our new fixture. Ok, big annoyance, because he ended up just putting our old, broken handle back on, so our faucet doesn't even turn off all the way (which was the main reason we chose that bathroom to begin with).
Then, about 2 weeks later I was downstairs in our guest bathroom and I kept hearing a slow tapping sound. I thought it was the heat duct or something. Then I started finding drips all over the downstairs toilet, and kept reprimanding my son and husband for their poor aim. Then one day I was using the downstairs toilet and I got a huge drop of water on my head, from the exhaust fan. I touched the ceiling and my finger sunk in.
Turns out that he didn't properly seal the toilet, as he didn't get extra wax to account for the greater depth since we went from sheet linoleum to ceramic tile floors. So, lovely toilet water was dripping down, into our other bathroom. We had to tear out the ceiling in our guest bath, bring our original guy who was going to do it all properly seal the toilet, and are STILL waiting for him to have enough time to help us do the repairs. We've had no ceiling in the guest bath for over 2 months now.
Oh yeah, and the guy used too big of a drill bit when he was installing drywall anchors, so our towel bar fell down within days.
Last time we go with "I have this guy..." recommendations, no matter how cheap they are!