In some towns, the cost of dealing with local rules, getting building permits and miscellaneous fees can add up to more than the TOTAL cost of building a house in others. There may be special wind or weather engineering requirements, strict height limitations even style and house paint rules that will influence what house you are allowed to build.
The more you know before you start designing your new house the better. Fortunately it is easy to learn the what hoops you may have to jump through. Simply visit your local building department. Many towns and cities have made their building and zoning rules online, but a personal relationship with the local zoning officials, plan checkers and inspectors will make life easier.