San Francisco Planning Code § 132.3 Sun Access

(a) General. In order to preserve the openness of Chinatown's streets to the sky and to achieve as much sun as possible on public sidewalks having a high volume of pedestrian use, setbacks at specified heights or a series of setbacks within the same plane (profile angle) as a 15-foot setback at specified heights may be required, as a condition of approval of conditional use authorization otherwise required by Section 254 of the Code.

(b) Procedure. A 15-foot setback requirement may be imposed in accordance with the provisions set forth below pursuant to the procedures for conditional use authorization set forth in Section 303 of this Code.

15-FOOT SUN ACCESS SETBACKS FOR 50-FOOT AND 65-FOOT

HEIGHT DISTRICTS IN CHINATOWN

Street	Street	Height	Profile	Height	Hours of Sun
Name	Width	District	Angle	at which	March - Sept.
				Setback	a.m. p.m.
				Begins	Sides of Street

15-FOOT SUN ACCESS SETBACKS FOR 50-FOOT AND 65-FOOT

HEIGHT DISTRICTS IN CHINATOWN

Street	Street	Height	Profile	Height	Hours of Su	n
Name	Width	District	Angle	at which Setback Begins	March - Sept a.m. p.m. Sides of Stre	. et
Grant	44'	50'	66°	35'	10:00 E	3:30 W
Stockton	65'	65'	42°	51'	8:45 E	3:45 W
Kearny	75'	50'	33°	40'	9:00 E	3:45 W
Kearny	75'	65'	35°	52'	8:45 E	3:45 W
Vallejo	69'	65'	43°	51'	9:15 S	sunset S
Broadway	81'	65'	38°	54'	7:45 S	sunset S
Pacific	50'	65'	49°	47'	9:45 S	2:30 S
Washington	50'	65'	49°	47'	9:45 S	2:30 S
Clay	50'	65'	49°	47'	9:45 S	2:30 S
Sacramento	50'	65'	49°	47'	9:45 S	2:30 S

(d) Encroachments. Encroachments may be permitted into the setbacks if a compensatory increase in sunlight on the sidewalk in the same block is achieved by a reduction of height or volume elsewhere in the structure. (Added by Ord. 131-87, App. 4/24/87)