A plumbing permit was filed for a residential property located at 20 Alexander Street. This indicates the owner plans to make changes to the plumbing system, which may include installing or modifying pipes, fixtures, or drainage systems.

The permit was filed on February 23, 2012, with the applicant not specified. The scope of work is not detailed in the record, but it likely involves updating or repairing the home's plumbing infrastructure.

Next steps may include inspections to ensure the work meets local building codes. The status of the permit remains unspecified, so further details may be available through the city's permit records.