I floated this idea with a few friends a couple of years ago when I saw how "well" it worked in Europe. Great idea, hard to pull off as most of the other comments have alluded to. I will give you a different perspective... you may want to very carefully research what "restricted trades" really means. The College of Trades replaced the MTCU and Apprenticeship Offices not that long ago, and they (apparently) are not fooling around when it comes to enforcement. Most (read: I think all) of the transportation based trades (Car, bike truck and coach etc) are restricted, meaning you must be a registered journey-person, apprentice or about to be an apprentice to work on products in that trade (caveat: this is my interpretation after discussions with the College). At one point, one of the enforcement officers implied that technically you can't even wrench on your own stuff at home. I personally don't care and do it all the time, and good luck enforcing that. Also he may have just been flexing his bureaucratic muscles, because that seems silly to me. I know that the College of Trades has fined quite a few shops in the GTA for not having: qualified people (on paper, no judgement intended about their actual abilities), all their paperwork in order, expired licences and the like.