Md. Code, Business Occupations and Professions § 12–310

(a) Subject to the limitations in this section, the Board may issue a limited license to provide plumbing services as a master plumber or a journey plumber to any applicant who:

(1) meets the qualifications that the Board establishes for:

(i) a limited master plumber license; or

(ii) a limited journey plumber license;

(2) passes an examination given by the Board for:

(i) a limited master plumber license; or

(ii) a limited journey plumber license;

(3) submits to the Board an application on the form that the Board requires;

(4) pays the appropriate application fee under § 12-303 of this subtitle for:

(i) a master plumber license; or

(ii) a journey plumber license; and

(5) if contracting in the name of the applicant or another person to provide plumbing services, submits to the Board proof of the liability insurance as required under § 12-501 of this title.

(b) (1) While a limited master plumber license is in effect, it authorizes the licensee to provide plumbing services only in a specified geographical area of the State.

(2) While a limited journey plumber license is in effect, it authorizes the licensee to provide plumbing services under the direction and control of a master plumber only in a specified geographical area of the State.

(c) A limited license expires on the first May 1 that comes:

(1) after the effective date of the limited license; and

(2) in an odd-numbered year.

(d) After June 30, 1991, the Board may not issue a limited license to provide plumbing services to any individual.

(e) Notwithstanding subsection (d) of this section, an individual who is issued a limited license to provide plumbing services on or before June 30, 1991, may continue to renew the limited license for a 2-year term as provided under § 12-308 of this subtitle if the individual meets the appropriate renewal requirements for:

(1) a master plumber license; or

(2) a journey plumber license.