It is the homeowner’s responsibility to negotiate with a remodeling contractor. So, as in any negotiation, the more knowledgeable you are, the better chance you have to negotiate the best deal.
The best deal does not necessarily mean the lowest contractor bid price. Instead the homeowner should place close attention to the terms, conditions and quality in any contractor quotation. Finally, when in doubt or something is not clear, you should ask questions and review it in writing.