This form allows neighbors who share a property line with San Mateo County Parks to request an inspection of trees in the park that show signs of failure due to defects or conditions of concern. County arborists will respond directly to requests made through this form.

This form is for trees in San Mateo County Parks ONLY. If the hazardous tree you wish to report borders a San Mateo County road or sidewalk (i.e. the County right-of-way) please contact Public Works.

For emergency and imminent hazards please call the San Mateo County Parks main line at (650) 363-4020, in addition to filling out this form.

Before filling out this form please confirm that the following is true:

  • The tree you are reporting is located in a San Mateo County Park.
  • The tree has defects or other concerning features that increase the tree’s likelihood of causing injury or damage.
  • The tree is within striking distance of your property.

Your Information

If the tree isn't accessible from Parks property, do you grant San Mateo County Parks permission to enter your property (by appointment) to access the tree?

Tree Information

Which direction is the tree located in relation to your property?
What is the approximate diameter of the tree?
i.e. the approximate diameter of tree at chest height (about 4.5 feet above ground level).
What is the approximate height of the tree?

Hazard Information

Why is the tree a hazard? What defects or concerning conditions have you observed?
Example: Home, commercial building, vacant lot, power lines, parked cars, etc.
Maximum 5 files.
30 MB limit.
Allowed types: gif, jpg, jpeg, png.