Once you have decided to look for a custom home builder, you should be able to say with confidence that you like your builder. Even though a builder is reputable in the area does not necessarily mean that you will like them on a personal level. If you think about how long you will be dealing with this person and their company, building your custom home would be a much more enjoyable experience if you actually liked and trusted your builder.
Depending on the size and scope of your home, custom home construction could last anywhere between 12-24 months. Also, there is a warranty period of 1-2 years after construction is completed. Even after the warranty period, you may need to contact your builder with other questions. At least 4 years of your life and time will be invested with this builder, so liking them personally as well professionally is very important.
Although many contracts are lost due to pricing, most people would say that they went with another builder based on trust. You are contracting someone to build your dream home with your money. Obviously you need someone you can trust and, in most cases, this is more important than the cost.