An accessory building attached to the principal building, on a lot, shall be made structurally a part thereof, and shall comply in all respects with the requirements of this title applicable to the principal building. Breezeways, for the purpose of this title, as an attachment between the garage and the main building, shall be considered as part of the main building, but breezeways shall not be considered as constituting dwelling space. (1968 Code ch. 12)