N.Y.C. Admin. Code § 28-410.5.5: § 28-410.5.5 Requirement for obtaining a license and seal.

A holder of a certificate of competence or an applicant who has satisfied all requirements for a master fire suppression piping contractor license shall obtain:

1. A license and seal issued upon establishing a fire suppression piping contracting business conforming to the requirements of this article and any rules promulgated by the department; or

2. A license and seal issued upon demonstrating employment with a city agency. The license shall clearly state: "The bearer of this master fire suppression piping contractor license is a government employee and as such is not authorized to engage in fire suppression piping contract work outside of his/her government employment and within such government employment shall only engage in fire suppression piping work on existing buildings."