D.C. Mun. Regs. tit. 17, r. 17-203
No individual shall perform any work that requires a license without first having obtained a license, or a temporary permit to work, except as specifically provided otherwise in § 204.
No license issued under this chapter shall be considered as a permit to do any work for which a permit is required by any District statute or regulation.
In making an installation, no licensee shall create a violation of any other regulation.
All licenses shall be subject to examination by any police officer or official of the District government.
Licenses shall be required to engage in the following businesses and occupations, subject to the conditions of this chapter:
No person shall employ an unlicensed person to perform electrical work as such, except as provided for in § 207.
A licensee shall register any change of address of his or her place of business or residence within five (5) days of the change.
No person holding a license under this chapter shall suffer or allow any other person to use or operate under his or her license.
No license shall be assigned or transferred.
Any license that has been changed or altered shall be void.
No permit to work, or license, shall be issued to any applicant who is less than sixteen (16) years of age, except where a permit to work has been issued by the Board of Education.
The Director may require an applicant to submit a birth certificate or other evidence of age.
A business, trade, or occupational license limited to a specified trade, occupation, or condition may be issued by the Director. Any limitation shall be specified on the face of the license.
Each license shall specify by name the person, firm, or corporation to which it is issued.
Each license shall specify the business, trade, profession, or calling for which it is granted, and the location at which that business, trade, profession, or calling is to be conducted.
Each license shall specify the date of expiration of that license.
D.C. Mun. Regs. tit. 17, r. 17-203