Cal. Bus. & Prof. Code § 5642
This chapter shall not be deemed to prevent a landscape architect from forming a partnership, firm, or corporation with, or employing, persons who are not landscape architects if the signature, date, and license number of the landscape architect appears on all instruments of service. In no case shall the other members of the partnership, firm, or corporation be designated or described as landscape architects.
The name of the licensed landscape architect shall appear wherever the firm name is used in the professional practice of the partnership, firm, or corporation, and the landscape architect shall reside in California when the partnership, firm, or corporation maintains a California office or mailing address. The name of the licensee shall appear on all partnership, firm, or corporation stationery, brochures, business cards and any instruments of service used or provided in the professional practice of the partnership, firm, or corporation.
No partnership, firm, or corporation shall engage in the practice of landscape architecture unless the work is under the immediate and responsible direction of a licensee of the board.
Failure of any person to comply with this section constitutes a ground for disciplinary action.
Ca. Bus. and Prof'l. Code § 5642