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Contra Costa County · Building on your lot

Tree removal in Contra Costa County

Contra Costa County's own rules on tree removal, with the code text for every value, and the state law underneath.

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

What Contra Costa County's code says

Contra Costa County code What Contra Costa County's code adds
Exemptions
  • No tree permit is needed for a hazard that requires immediate action.
    Applies: Only for a hazardous situation. A report is due within 10 days when officials are not available during off-hours.
    § 816-6.1002 · code text
    Any tree whose condition creates a hazardous situation which requires immediate action as determined by the director, building inspector, sheriff, involved fire district or a utility company to protect its facilities.
  • No tree permit is needed when removal was specifically approved in a development plan, subdivision, discretionary project or building permit.
    Applies: Only when the removal had that prior approval.
    § 816-6.1002 · code text
    Any tree whose removal was specifically approved as a part of an approved development plan, subdivision, other discretionary project or a building permit.
  • No tree permit is needed for routine pruning that does not top or remove the tree.
    Applies: Only for routine pruning.
    § 816-6.1002 · code text
    Routine pruning not involving topping or tree removal.
Permit to remove
  • Yes. Apply for a tree permit at least 10 days before the work.
    Applies: Applies to cutting down, destroying, topping or removing a protected tree, or trenching, grading or filling within its dripline.
    § 816-6.8002 · code text
    Any person proposing to trench, grade or fill within the dripline of any protected tree or cut down, destroy, trim by topping or remove any protected tree shall apply to the department for a tree permit, not less than ten days prior to the proposed tree removal or tree alterations.
Protected trees
  • Listed indigenous trees 20 inches or more around (about 6.5 inches across), measured 4.5 feet above ground.
    Applies: Only next to or in a riparian, foothill woodland or oak savanna area, or a stand of 4 or more trees.
    § 816-6.6004 · code text
    Where the tree to be cut down, destroyed or trimmed by topping is adjacent to or part of a riparian, foothill woodland or oak savanna area, or part of a stand of four or more trees, measures twenty inches or larger in circumference (approximately 6.5 inches in diameter) as measured four and one-half feet from ground level, and is included in the following list of indigenous trees:
  • Any tree shown as preserved on an approved map or plan, or required to be kept as an approval condition.
    Applies: Applies to all property in the unincorporated county.
    § 816-6.6004 · code text
    Any tree shown to be preserved on an approved tentative map, development or site plan or required to be retained as a condition of approval;
  • Any tree required to be planted to replace a tree that was removed unlawfully.
    Applies: Applies to all property in the unincorporated county.
    § 816-6.6004 · code text
    Any tree required to be planted as a replacement for an unlawfully removed tree.
  • Any tree 20 inches or more around (about 6.5 inches across), measured 4.5 feet above ground, including the listed oaks.
    Applies: Only on developed commercial, office or industrial property, undeveloped property, recreation or open-space areas, and designated visually significant riparian or ridgeline areas.
    § 816-6.6004 · code text
    Any tree measuring twenty inches or larger in circumference (approximately six and one-half inches diameter), measured four and one-half feet from ground level including the oak trees listed above;
  • Any multistemmed tree whose stems together measure 40 inches or more around, measured 4.5 feet above ground.
    Applies: Only on developed commercial, office or industrial property, undeveloped property, recreation or open-space areas, and designated visually significant riparian or ridgeline areas.
    § 816-6.6004 · code text
    Any multistemmed tree with the sum of the circumferences measuring forty inches or larger, measured four and one-half feet from ground level;
  • Any significant group of trees, including groves of 4 or more trees.
    Applies: Only on developed commercial, office or industrial property, undeveloped property, recreation or open-space areas, and designated visually significant riparian or ridgeline areas.
    § 816-6.6004 · code text
    And any significant grouping of trees, including groves of four or more trees.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Do I need a permit to remove a tree in Contra Costa County?

Contra Costa County's code: No tree permit is needed for a hazard that requires immediate action. (Only for a hazardous situation. A report is due within 10 days when officials are not available during off-hours.) (§ 816-6.1002); No tree permit is needed when removal was specifically approved in a development plan, subdivision, discretionary project or building permit. (Only when the removal had that prior approval.) (§ 816-6.1002).

General information, not legal advice.

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