53 Pa. C.S. § 6023
"Affordable housing effort" as used in this subchapter is a program or project which increases the availability of quality housing, either sales or rental, to any resident of a city of the first class whose annual income adjusted for household size is less than 115% of the median income of the metropolitan statistical area including that city of the first class and includes:
(1) A program or project which increases the production of housing for sale or rent.
(2) A program or project which increases the accessibility of new and existing housing to visitors or occupants who are physically disabled.
(3) A program or project which provides grants for repair of basic systems or improvement of owner-occupied housing.
(4) A program or project which provides for the improvement of facades for owner-occupied housing.
(5) A program or project which prevents or reduces homelessness.
53 Pa.C.S. § 6023