Fontana setbacks are set in FMC Title 17. Typical R-1 setbacks are 20 ft front, 5 ft side, 15 ft rear. ADUs enjoy 4 ft side and rear setbacks under California Gov Code 65852.2.
The Fontana Development Code (FMC Title 17) prescribes minimum yard setbacks by zone district. In the R-1 Single-Family Residential zone, common setbacks are 20 feet front, 5 feet side (each side), and 15 to 20 feet rear, though minimum figures vary by specific overlay and lot dimensions. Larger-lot estate zones (R-E) may require 25 to 30 feet in the front and 25 feet in the rear. Multi-family zones (R-2, R-3) have shallower setbacks scaled to building mass. Commercial and industrial zones apply setbacks keyed to street frontage and neighboring residential. Corner lots typically require observing the front setback on both street-facing yards, which often limits buildable area. Accessory dwelling units (ADUs) benefit from California Government Code Section 65852.2, which preempts stricter local setbacks and requires Fontana to allow ADUs with 4-foot side and rear setbacks on otherwise conforming lots. Pool equipment enclosures, air-conditioning condensers, and detached sheds under 120 square feet can encroach into setbacks subject to separate limits. Projections like eaves (up to 2 feet) and bay windows are permitted into setbacks under the Development Code. Variances from setback require a Planning Commission application and findings of hardship.
Building into a required setback without a variance is a permit and zoning violation. Remedies include stop-work orders, reconstruction or removal of the offending portion, and double permit fees. Legal nonconforming structures built before current rules may remain but cannot expand.
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Side-by-side rule comparisons with other cities in San Bernardino County.
See how other cities in San Bernardino County handle setback rules.
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