R-1 — One-Family Residential (R-1)
Rear: 100 feet. Side: 20 feet on one side, 50 feet total of two sides (Section 3.2.D).
The front setback is measured from the centerline of the road, not the lot line, and varies by road class: 110 feet on arterials, 93 feet on collectors, 80 feet on local roads, 50 feet from a freeway right-of-way line or private road easement (Section 3.27.A). Where most of a block was built out before October 19, 1997, a new house matches the established building line, but never more than 40 feet from the front lot line (Section 3.28.B.1.a).