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

San Bernardino Development Code (Title 19 of the Municipal Code) establishes minimum setback distances from property lines for all structures in each zoning district. Setbacks vary based on zoning district, parcel dimensions, and structure type. Typical Residential Suburban (RS) and Residential Urban (RU) zones require 20 to 25 ft front yards, 5 ft interior side yards, 10 ft street-side yards on corner lots, and 15 to 20 ft rear yards. Residential Medium and Residential High density zones often reduce front yards to 15 ft and side yards to 5 ft with 10 ft between structures. Setbacks are measured from the property line to the nearest point of the structure including eaves, bay windows, and decks over 30 inches in height. Architectural features may encroach into required yards: eaves up to 2 feet, chimneys up to 2 feet, and uncovered porches or steps up to 6 feet into the front setback. Accessory structures under 120 sq ft and under 12 ft tall generally require 3 ft side and rear setbacks. Corner lot visibility triangles restrict structures and landscaping over 30 inches in height within 25 ft of intersection corners. ADUs receive reduced 4 ft side and rear setbacks under state law (Gov Code 65852.2) regardless of local requirements. Variances require Planning Commission review with findings of unique hardship under Gov Code 65906. Hillside overlay zones along the foothills north of 40th Street impose additional setback requirements to preserve slopes and minimize grading.