15. Section 20 of the Act of 2009 is amended by substituting the following subsection for subsection (1):

“(1) For the purposes of this section ‘household’ means—

(a) a person who lives alone,

(b) 2 or more persons who live together, or

(c) 2 or more persons who do not live together but who, in the opinion of the housing authority concerned, have a reasonable requirement to live together.”.