N.H. Rev. Stat. Ann. § 184:89

The commissioner may issue a permit to any milk producer upon receipt of a completed application furnished by the commissioner and setting forth such information concerning the applicant and the applicant's operation and facilities as may by rules be required. A permit will be granted upon the condition that the applicant shall at all times conduct its operation and maintain its facilities in accordance with the requirements of this subdivision and all rules adopted under this subdivision. Permits shall not be transferable with respect to persons or locations. All permits once issued shall remain in effect until revoked or until 6 months following the date on which milk production ceased at the permitted facility. Permanent milking facilities at fairgrounds or other locations which are used at least annually shall be exempt from the 6-month period. A current listing of all valid permit holders shall be available for review at the department of health and human services.