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Oroville · Building on your lot

Sheds, garages and other accessory structures in Oroville

Detached accessory buildings are limited to 15 feet, or 25 feet with development review committee approval; detached garages to 700 square feet unless approved.

Key points

  • Accessory limits: Detached accessory buildings are limited to 15 feet, or 25 feet with development review committee approval; detached garages to 700 square feet unless approved.

Each rule below links to the section of the Oroville Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Oroville's code says

Oroville code What Oroville's code adds
Maximum height
  • No more than 15 feet.
    Applies: For detached accessory buildings. Up to 25 feet with development review committee approval.
    § 17.12.090 · code text
    Accessory structure | 15′
  • No more than 25 feet.
    Applies: For detached accessory structures over 15 feet, only with development review committee approval.
    § 17.12.090 · code text
    Accessory structure over 15 feet in height | 25′ 1
Size or lot coverage
  • No more than 700 square feet.
    Applies: For a detached garage. Larger needs development review committee approval.
    § 17.12.090 · code text
    Detached garage | 700 sq. ft. 3
  • No more than 25% of the main building's floor area.
    Applies: For all other detached accessory structures. Larger needs development review committee approval.
    § 17.12.090 · code text
    All other accessory structures | 25% of the floor area of the main structure 3
  • May cover no more than 50% of the required minimum rear setback for main buildings.
    Applies: For detached accessory buildings.
    § 17.12.090 · code text
    Detached accessory buildings shall not occupy more than 50% of the required minimum rear setback for main buildings.
Side and rear setback
  • At least 5 feet from the rear lot line.
    Applies: When the rear lot line is not on an alley. Main-building side setbacks apply, except 1 building of 120 square feet or less.
    § 17.12.090 · code text
    In all other cases, the accessory building shall have a required minimum rear setback of 5 feet.
  • 0 feet: it may be built on the rear lot line.
    Applies: Only when the rear lot line borders an alley.
    § 17.12.090 · code text
    A detached accessory building may be constructed on the rear lot line, provided that the rear lot line abuts an alley.
Distance from the house
  • At least 6 feet from the main building's foundation.
    § 17.12.090 · code text
    A detached accessory building shall be set back at least 6 feet from the foundation of the main building.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

How big can a shed or accessory building be in Oroville?

Detached accessory buildings are limited to 15 feet, or 25 feet with development review committee approval; detached garages to 700 square feet unless approved.

General information, not legal advice.

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Ask GoCodebook how Oroville's sheds, garages and other accessory structures rules apply to your situation and get an answer that cites the section.

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