When you are looking to do remodeling on your home remember that overhead is factored in to any job you do. The more companies you go with the more overhead you are paying. If you do your tile through one company, your cabinets through another and your countertops through another; You could pay thousands more than doing all your business through the same company.
This also applies to breaking up rooms. If you price out rooms individually instead of one overall pricing the company will add overhead to each room assuming you may not do all of them. I know it is nice to see each room separately but in the end it will cost you more. Also, when you do a house remodel try to remodel rooms together when possible. Its not good do a kitchen and then a couple months later do a bathroom and then a couple months later do another bathroom. It will save you a lot of money grouping them all into one job.