53 Pa. Stat. § 7193.6
The mayor of a city of the second class may designate an agency for the acquisition, administration, maintenance and disposition of property acquired by the city of the second class at a sheriff's sale. The city of the second class, or its agent, may act as an agent for a taxing authority having a claim against property under this section, pursuant to a locally negotiated agreement that positively affirms the consent by each taxing authority to allow the city of a second class to act as an agent on each taxing authority's behalf. A city of the second class acting as an agent for a taxing authority under this section may take any actions necessary to protect and defend a taxing authority's rights and obligations under this act.
53 P.S. § 7193.6