Each area has its own preferred style of homes that are the top sellers. For example, in California the beige stucco, red-tiled roof home with the backyard pool is the quintessential California dream home. In New England, the more traditional multi-story formal home is the most sought after. You need to look at your own area to see what the different styles of homes are selling for.
A great way to look at the different styles available in your area is from the newspaper picture ads, Internet ads, and from those free real estate brochures that are provided in many grocery stores and public places. The more you look at these ads, the better you will be in determining what you and your family want in a home and the price range of those wants.
You also need to assess what your family needs. If one of your family members is disabled and cannot manage stairs without assistance you may want to look at single-story ranches or the split level that will allow the installation of a chair assist on the stairway.