Notwithstanding any law to the contrary, in Baltimore City, the Mayor and City Council may not sell a taxpayer’s property for failure by the taxpayer to pay an alley assessment charge. Except as provided in subsection (c) of this section, this section does not affect any other right or remedy of the City for the collection of an alley assessment charge. Baltimore City may not acquire owner-occupied residential property by means of execution of a judgment for failure by the owner, upon whom the alley assessment charge was originally made, to pay the alley assessment charge.