The design standards adopted as part of each /NCO district may address building and site design, but may not address the availability of permitted and special exception uses pursuant to Chapter 14-600 (Use Regulations), related to any of the following:
(a) Alterations to architectural features of existing buildings that are visible from a public street;
(b) The new construction or expansion of a building; and
(c) Construction of a new building or use of a vacant property after substantial demolition of an existing building on a property.