General Ideas Door knocking devices, in addition to door bells, alert a person who is deaf or hard of hearing that someone is at the door. The device is hung on the inside of the door and flashes a light when a visitor knocks. Protruding or low hanging objects, such as exterior porch lights or hanging baskets should be removed or relocated whenever possible to prevent people with visual impairments from injury. Removing objects most likely can be accomplished by maintenance personnel with little or no cost. Filters in heating and ventilation systems should be changed frequently to keep dust and mold from adversely affecting people with environmental illnesses or respiratory illnesses.
Costs vary depending on the size of the filter.
Swing clear hinges increase the width of the door. Speaker phones from the lobby to an apartment increases security for every tenant. The system is especially beneficial to people with mobility impairments, and those who are blind or elderly. Pest controls used for planting, for control of insects and for lawn care should be chemically free. This is important to a person who has environmental illnesses.