Tree Removal Permits: Petaluma vs Sonoma

When do I need a tree-removal permit in unincorporated Sonoma County?

Whenever you remove a protected native tree 6 inches DBH or larger - a zoning permit for most, and a use permit for hardwoods 36 inches+ or redwoods 48 inches+. Valley oaks in a VOH Combining Zone and designated Heritage/Landmark trees have additional permit and mitigation requirements.

What makes a tree a 'Heritage' or 'Landmark' tree?

Under County Code Chapter 26D, a tree can be nominated for special protection based on its age, size, shape, rarity, or location, with the property owner's agreement. About 50 trees have been recognized; removing one requires a higher level of review.

Do I need a permit to remove a tree in my yard in Sonoma?

Yes, if the tree qualifies as a 'significant tree' under SMC §12.08.020. Sonoma's Chapter 12.08 requires a written City permit before altering, removing, or relocating a significant tree (§12.08.050).

What about a tree on the parkway strip?

Trees in the public right-of-way are governed by SMC §12.08.030 — only the Public Works Director or their authorized representative may trim, prune, brace, or plant them without a permit. Unauthorized work carries a $1,000 fine.

Are there emergency exceptions?

Yes. SMC §12.08.050 carves out emergency circumstances from the prior-permit requirement, but you should document the hazard and notify the City promptly.