Having a custom drawn designed house means a professional architect applies his skills limited to the individual homeowner's needs or what they have in mind. Factors considered in such a situation are the size of the site of construction, ideas of the individual homeowner, population around the area, and the nationally and locally existing building code plans. Time is also a considerable factor for completion of a custom designed house.
Building a house of your own choice is the dream of many people, but when they get the opportunity and financial means to do so, they struggle to get the right house plan that would transform their dream into reality. It is a long and complicated route from the first conceptualization of a home to the house designs, floor plans, elevations, cross-sections, structural designs, and finally the completed house plan that will ultimately form the basis of the construction of the home. Most people do not have a clue as to where and how to get house designs, or even to get the right designers who can do this job for them.
In addition, good stock plans come with a detailed inventory, which you can use while you're developing out your dream house. This is important for two reasons: you can look at the materials used to build your house and determine whether your budget will stretch to accommodate them, and you can get a very good idea of where to upgrade and downgrade materials.
There are dozens of other house plan style categories, such as A-Frames, Mission, Contemporary, Southwest, and Tudor to name just a few. A web search for house plans yields a mind blowing number of searchable sites. Most of these allow you to search for house plans, by style, number of bedrooms, baths, with or without a garage, or by sq. ft. of living space.