The ADU can be added on the second floor as long as the overall resulting building height is within 110% of the existing building height.

Eaves: Project into the required side yard not more than 4 inches for each foot of width of such side yard, provided the width of the side yard is not reduced to less than 30 inches. Project into the required front and rear yards not more than 30 inches. Project into the side yard adjoining the street lot line of a corner lot not more than 30 inches, provided the width is not reduced to less than 30 inches.

Open roof and unenclosed trellis