Universal Design

Universal Design means creating an attractive, stylish space that everyone, regardless of age, size, or ability, can live in or visit. A home with Universal Design makes it easier for residents to live in, and for guests to visit now and in the future, even as everybody's needs and abilities change.
A house can have Universal Design when it has entryways that are easily accessible to any and everyone, and the areas in the house (kitchen, bathroom, bedrooms, etc.) have enough space that someone who may be in a wheelchair can easily maneuver around. 
 
My own home already resides at ground level, meaning there would be easy access for anyone with a disability. Our kitchen is also fairly spacious, and the bedrooms would also have adequate room.