The following options for the common use room on the primary entry level shall be offered and, if accepted, installed at the request and cost of the purchaser, unless an exemption of this universal design feature is granted under Section 15.154.060:
A. At least one common use room, such as a dining room or living room, on the accessible route. Sunken or raised areas not exceeding fifty (50) percent of the area of the room's floor space shall be permitted as an option of the purchaser in a common use room on the accessible route when an accessible route connects a usable portion of the common use room to the accessible bathroom or powder room and the accessible exterior entry door.
B. No sunken areas in a common use room on an accessible route.
C. Standards related to access to and flatness of any other common use room on the primary entry level. (Ord. 2010-003 § 1)