503.1 The Prototype Building procedure shall be used for all building types listed below. For mixed-use buildings the Energy Cost Budget is derived by allocating the floor space of each building type within the floor space of the prototype building. For buildings not listed below, the Reference Building procedure of §434.505 shall be used. Prototype buildings include:

(a) Assembly;

(b) Office (Business);

(c) Retail (Mercantile);

(d) Warehouse (Storage);

(e) School (Educational);

(f) Hotel/Motel;

(g) Restaurant;

(h) Health/Institutional; and

(i) Multi-Family.