You'll want to check out these sites if you want to be a home inspector http://www.oahi.com/ (ontario) http://www.cahpi.ca/ (canada) In brief you need to take several courses and have a background in home building/repair to become a certified home inspector which you will want to do. You...

The hourly rates seem high if they used handyman and you should be able to find something for a little less even in Toronto. Now if the used a contractor then I could understand the price. As for the length of time it`s hard to say if it`s a reasonable amount without knowing the size of the job...

As mentioned above check the caulking and grout around the tub assuming there is a tub. You`ll also wanna check the cover plate for the faucet handle(s) and the tub spout to make sure they are not allowing water through when the shower is on. Next check the faucet itself from the outside then...