You should attempt to appraise at least three contractors for your project. You will have a meeting with every one and after that meeting you are going to want a summary of what you suspect every contractor told you. If they're going to give you a price at that point then request that all things are enunciated, in writing, to incorporate the things which are vital to you. It is perfectly normal the person writing up the guesstimate will target the things that are crucial to them, so you could have to be unrelenting that things vital to you, outside the price, are also included.
