Porterville, CA Building Setbacks & Zoning: Setback Rules (2026)

Section 201.03, part of Article 201 (Residential Districts) in the City's Development Ordinance, sets the dimensional standards that apply in the residential districts RS-1, RS-2, RM-1, RM-2 and RM-3. Table 201.03 requires a fifteen-foot front yard for the residence itself in every one of the five districts, with a deeper twenty-foot setback for an attached garage facing the street and a ten-foot setback for a covered front porch. Interior side yards must be at least five feet in all five districts, while the street side yard on a corner lot needs ten feet.

Rear yards run ten feet in RS-1, RM-2 and RM-3 but drop to five feet in RS-2 and RM-1, the two mid-density districts. Maximum building coverage climbs with density too, from thirty percent of the lot in RS-1 up to sixty percent in RM-3. Section 201.03 cross-references several supplemental rules: subsection (a) requires extra height stepbacks near RS-1, RS-2 or RM-1 boundaries, subsection (b) lets a block's average front yard control when most lots already sit below the minimum, and subsection (f) pushes institutional buildings such as schools or government offices back at least fifteen feet from any RS district.

Existing structures with a legal nonconforming side yard can add on at the same setback under subsection (c) as long as the addition does not encroach closer to the property line than the existing structure.