Answer:
Universal design
Step-by-step explanation:
Universal design concept was first developed and established by various architects in the 1980's. It is a human-centered design, accommodating people from different sizes, ages and abilities.
The design has to benefit the largest amount of people living under the same roof, and making allowances for their different needs and requirements.
An universally designed house would be a safe and more functional place for its occupants, and not only these with disability.