Yes, be very careful, and do your research... I got FUCKED, by a company that is called "Affordable Anytime Repair", they also go by, "A to Z repair services". I have learned the hard way, that in general, CONTRACTOR = Fucko assclowns that make a living by doing virtually nothing, and running away with your money. The most fucked up part of the whole deal, is these low life, scum sucking, losers, are "professional" scam artists, and they've found all of the loopholes in the consumer protection laws, and they just skate along, fucking anyone they possibly can, and never being caught, or punished for it.
The very best advise I can give you, is to take your time, and just do it yourself. None of the "carpentry" or "landscaping" jobs out there, are rocket science. They usually require hard physical labor, and little to nothing else. Hope this was, of at least some assistance...