Ranch style homes are usually long and low with a bare minimum of interior and exterior decoration. The idea is to create a casual and informal lifestyle, usually with access to the outdoors via large plate glass windows, sliding glass doors, and patios or decks. Ranch style home plans normally imply a single story construction with a low and long roof line, with a cross- or side- gabled or hip roof.
Modern home plans come in all shapes, sizes and styles. It will be up to you to find the one that best suits your needs. If that's a contemporary plan that includes an open layout, you can find plenty of great plans available to choose from. Of course, you also have the option of creating your own home plans based on your requirements, be they extra bathrooms for the teens, home office or workout space. Perhaps you want an open kitchen and lounge area, but a private dining room. Maybe you prefer the entire lower level to be open but want the sleeping areas divided accordingly. It really doesn't matter because you can get whatever you want.
Nowadays cottages are often used as summer or weekend getaways - often by lakes or the seaside - by urban dwellers seeking to escape the noise and rat race. They are often built as rental properties in popular tourist areas. But usually when people think of a cottage they mean a rural dwelling in the traditional English country cottage house plans style with stone or stucco siding, asymmetrical lines, one-and-a-half stories high, and with hip roof and steep gables - the overall impression being a cozy, storybook appearance.
Modern home plans vary greatly, but tend to lean towards a more minimalist feel. Many people feel that contemporary modern homes are more aesthetically pleasing than traditional styles. New house designers today tend to make use of large glass windows for lots of natural light, open floor plans, and living areas that flow into one another. Having a new house designed is certainly an exciting time; ensure you view a wide range of styles and designer plans before you commit to print your future home.