D.C. Mun. Regs. tit. 10, r. 10-C301
Conceptual design review is not required before application for a permit, but is strongly encouraged for new construction, substantial alteration, or any other work requiring a significant financial outlay for the preparation of permit plans.
The purpose of conceptual design review is to allow applicants to benefit from the guidance of the Review Board and Commission of Fine Arts, or both, in advance of a permit application, and to allow the Board and CFA to review and take action at an early stage of design. Once completed, the process further enables the delegation of final permit review to the staff when appropriate.
An application for conceptual design review does not constitute a permit application. An application for conceptual design review is not subject to review by the Mayor's Agent, or to the review periods set out in D.C. Official Code §§ 6-1104 through 6-1108.
D.C. Mun. Regs. tit. 10, r. 10-C301