Redlands, CA Accessory Structures: Shed Rules (2026)

Redlands regulates sheds, cabanas, bathhouses, and similar accessory buildings primarily through the residential-zone development standards in Title 18 of the Municipal Code. Section 18.21.140 (Accessory Buildings) sets the core dimensional limits applied across residential districts. An accessory building must be located no closer to the side and rear property lines than 5 feet for buildings up to 10 feet high, increasing to 10 feet for buildings more than 10 feet high. The maximum height for an accessory building is 15 feet, measured from the foundation at ground level to the highest point of the roof. Accessory buildings must also be a minimum of 10 feet from the main building; however, when more than 5 feet of the accessory building extends into the area to the rear of the main building, the minimum space between buildings increases to 20 feet. Whether a small shed needs a building permit depends on its size and construction; California's building code generally exempts very small one-story sheds (typically under 120 sq ft) from a building permit, but zoning setbacks still apply regardless of permit status. Always confirm the exact rule for your zoning district with the Redlands Building and Safety Division at the One Stop Permit Center, since standards can vary by zone.