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Trinity County · Building on your lot

Sheds, garages and other accessory structures in Trinity County

Trinity County limits detached accessory structures, except agricultural ones, to 25 feet unless a planning commission use permit allows more.

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Key points

  • Accessory structures: Trinity County limits detached accessory structures, except agricultural ones, to 25 feet unless a planning commission use permit allows more.

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

What Trinity County's code says

Trinity County code What Trinity County's code adds
Maximum height
  • No more than 25 feet.
    Applies: Detached accessory structures, except agricultural ones; more height only with a planning commission use permit.
    § 17.30D.040 · code text
    The maximum height for a detached accessory structure shall be limited to twenty-five feet, provided that additional height may be permitted upon first securing a planning commission use permit pursuant to Chapter 17.32 of this title.
Side and rear setback
  • At least 5 feet.
    Applies: Interior side yard; detached accessory buildings outside commercial, industrial and public facility zones.
    § 17.30D.040 · code text
    c. Interior side yard | 5 feet minimum
  • At least 10 feet.
    Applies: Street side yard of corner lots; detached accessory buildings outside commercial, industrial and public facility zones.
    § 17.30D.040 · code text
    d. Street side yard (corner lots) | 10 feet minimum
  • At least 5 feet.
    Applies: Rear yard; detached accessory buildings outside commercial, industrial and public facility zones.
    § 17.30D.040 · code text
    e. Rear yard | 5 feet minimum

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

How big can a shed or accessory building be in Trinity County?

Trinity County limits detached accessory structures, except agricultural ones, to 25 feet unless a planning commission use permit allows more.

General information, not legal advice.

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Trinity County Municipal Code — full text