§ 154.25  YARD REGULATIONS.
   The following yards measured in feet shall be provided in the residential districts unless modified by § 154.55:
 
DISTRICT
ONE FRONT YARD OF AT LEAST
TWO SIDE YARDS OF AT LEAST
ONE REAR YARD OF AT LEAST
AA-1 Single-family residence district
40
15
40
AA-2 Single-family residence district
40
15
40
A Single-family residence district
40
10
40
B Single-family residence district
30
7
30
C Two-family residence district
30
7
30
 
   (A)     Provided, however, that:  Where two or more lots constituting 40% or more of a frontage have been improved with buildings that have observed a front yard line having a variation in depth of not more than six feet, no building shall project beyond the front yard so established, but this regulation shall not be interpreted to require a front yard of more than 75 feet in the "AA-1" and "AA-2" Districts; 60 feet in the "A" District; and 50 feet in the "B" and "C" Districts.
   (B)     Corner lots shall provide a front yard on each street side but this shall not reduce the buildable width of the lots to less than 30 feet in the "AA-1", "AA-2", and "A" Districts or less than 28 feet in the "B" and "C" Districts.
   (C)     Double frontage lots shall provide a front yard on both streets.
   (D)     Side yards each shall be equal to 10% of the lot width at the building line but this shall not require a side yard greater than 25 feet in the "AA-1" and "AA-2" Districts; 15 feet in the "A" District; 12 feet in the "B" District; and ten feet in the "C" District.
   (E)     Rear yards shall be equal to 20% of the depth of the lot but this shall not require a rear yard greater than 50 feet in the "AA-1" and "AA-2" Districts; 45 feet in the "A" District; 50 feet in the "B" District; and 40 feet in the "C" District.