Can You Build A 1,200-Sq-Ft ADU In Chino Hills? A Property-by-Property Guide For 2026

Quick Answer Most Chino Hills single-family lots can support a 1,200-square-foot detached ADU, which is the maximum size allowed under state law. Whether your specific property qualifies depends on lot size, setback space, existing structures, slope, and whether the parcel sits inside the Fire Hazard Overlay. A site-specific feasibility check is the only reliable way […]