N.H. Code Admin. R. Saf-Mec 301.16
“Owner’s agent” means an individual designated by the homeowner to assist with the incidental repair, replacement, maintenance and installation of a plumbing fixture or plumbing system component specifically at the owner’s residence, and that such agent in performance of his or her duties shall not receive compensation for the plumbing work performed.
Source. #10847, eff 7-1-15 (from Saf-Mec 303.16)