Programs and Services

Trees

Trees filter and clean the air, lower temperatures on hot days, add to the scenic quality of our environment and increase property values. We have ordinances in place to guide the care, pruning, and removal of certain oak and landmark trees that are explained further in the FAQs below.

Trees FAQ

All species of Quercus (oak) over two inches in diameter:

  1. Larger-sized California Sycamore,
  2. Black Walnut
  3. Bay Laurel
  4. Toyon

The landmark tree ordinance does not apply to single-family properties of less than two acres.


A tree's protected zone is five feet beyond the outer edge of the canopy or 15 feet from the trunk, whichever is greatest. Permits are required for any work impacting the tree or soil in this area, other than removal of dead wood. Please see this page for related oak tree permits.

No, you must first submit an application to remove a dead or hazardous tree from your property. Type A Oak Tree Application.

No, you must submit a request to remove a healthy oak or landmark tree by submitting an Oak/Landmark Tree Permit.

If you are considering building or grading near your trees canopy, apply for an Oak/Landmark Tree Permit.

Please submit a service request or call Public Works at (805) 449-2499.

Majestic oak trees are classified as trees with a trunk diameter of 3 feet or greater when measured at 4.5 feet above the ground. Some of the City's largest oak trees are located in public spaces, including the Conejo Open Space Conservation Agency's trailheads, and the Los Robles Golf Course.

Forestry Master Plan

oak trees

The Forestry Master Plan addresses City-maintained trees and plantings that are located within the public right-of-way, such as medians, parkways, and easements.

Thousand Oaks is a Tree City, USA

tree city usa

Thousand Oaks has been named a Tree City, USA by the Arbor Day Foundation to honor its commitment to effective urban forest management.