A residential plumbing permit was filed for a property located at 105 Mansfield Street. This indicates the owner intends to make changes to the plumbing system, which could involve installing or modifying pipes, fixtures, or other related components.

The applicant for the permit is Martin Callahan Jr. The permit number is BLDP200364, and it was filed on May 6, 2020. The work scope involves plumbing modifications for a residential building.

Next steps likely include a review by city officials and possibly inspections to ensure the work meets safety standards. The status is currently not specified, so further details may be available upon request.