Pennsylvania Statutes Title 68 P.S. Real and Personal Property § 250.502-A. Landlord's duties

The retention of control of the stairways, passages, roadways and other common facilities of a tenement building or multiple dwelling premises places upon the landlord, or other possessor, the duty of reasonable care for safety in use. This responsibility of the landlord extends not alone to the individual tenant, but also to his family, servants and employees, business visitors, social guests, and the like. Those who enter in the right of the tenant, even though under his mere license, make a permissible use of the premises for which the common ways and facilities are provided.