The American Society of Interior Designers has some information about designing for people with hearing loss on their website. An article written by Samantha McAskill, ASID, lists various tips for interior designers like, using sound absorbing fabics, avoiding high ceilings, planning for quiet rooms / areas in the home, selecting quiet appliances, and using visual alerts for telephones and doorbells.
Universal Design (UD) is an approach to design that increases the potential for developing a better quality of life for a wide range of individuals. It is a design process that enables and empowers a diverse population by improving human performance, health and wellness, and social participation (Steinfeld and Maisel, 2012). It creates products, systems, and environments to be as usable as possible by as many people as possible regardless of age, ability or situation.