Tree Protection in Folsom, CA

If you live in Folsom or are thinking about moving there, tree protection are one of those things you probably won't think about until they affect you directly. Folsom has 3 specific rules on the books covering different aspects of tree protection, and some of them might surprise you.

Heritage & Protected Trees

Folsom automatically classifies a tree as a heritage tree once it reaches 30 inches DSH (or 50 inches combined for multitrunked trees) on the city's master tree list, while a separate tree can be formally named a landmark tree by city council resolution under Section 12.16.170 for its historical, habitat, rarity, or beauty value.

Key details: Heritage tree threshold: 30-inch DSH (50-inch if multitrunked). Landmark designation body: City council, by resolution. Designation criteria: Historical value, habitat, rarity, or beauty. Owner notice: First-class mail 30 days before hearing. Declassification required: Before any landmark tree removal.

Damaging or removing a heritage or landmark tree without following this chapter is enforced the same way as any Chapter 12.16 violation: a misdemeanor carrying up to a $1,000 fine and up to six months in jail, plus Level E administrative sanctions under Section 12.16.220. Because a landmark tree cannot lawfully be removed until the city council declassifies it under Section 12.16.170(D), skipping declassification blocks even an otherwise-qualifying removal permit under Section 12.16.150(A)(1).

This is one of the stricter rules in Folsom's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Protected Tree Species

Folsom's tree ordinance protects four native oak species at just 6 inches of trunk diameter, plus any heritage, landmark, or zoning-required regulated tree, under Municipal Code Section 12.16.020. Cutting, major pruning, or grading within a protected tree's root zone requires a permit regardless of whether the tree is on private property.

Key details: Protected categories: Native oak, heritage, landmark, regulated trees. Native oak species: Valley, blue, interior live, coast live oak. Single-trunk oak threshold: 6-inch DSH triggers protection. Multitrunk oak threshold: 20-inch combined DSH. Root zone radius (standard): 1 ft per inch of trunk diameter.

Unpermitted cutting, major pruning, or root-zone disturbance of a protected native oak, heritage, landmark, or regulated tree is a misdemeanor under Section 12.16.220, punishable by a fine up to $1,000, up to six months in county jail, or both, and is classified as a Level E administrative violation. Where the violation causes a critical impact to the tree, the city arborist must set the monetary sanction at no less than double the in-lieu mitigation fee that Section 12.16.150(B)(2) would otherwise charge for that species and diameter.

This is one of the stricter rules in Folsom's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Parkway Planting

New construction in Folsom must plant street trees from the city's master tree list under Section 12.16.190: one tree per single or two-family lot, two for corner lots, and spacing of one tree every 20 to 40 feet of frontage for multifamily and commercial projects, scaled to tree size.

Key details: Single-family requirement: 1 street tree per lot; 2 on corner lots. Large tree spacing: 1 tree per 40 ft of frontage. Medium tree spacing: 1 tree per 30 ft of frontage. Small tree spacing: 1 tree per 20 ft of frontage. Species source: City's master tree list only.

Because a planted street tree is a protected tree, removing or major-pruning it without a permit triggers the same Chapter 12.16 misdemeanor exposure: up to a $1,000 fine, up to six months in county jail, and a Level E administrative sanction under Section 12.16.220. Failing to maintain the required sidewalk, bike lane, or street clearance under Section 12.16.180(A)(2) is enforced through the same administrative violation process in Chapters 1.08 through 1.10.

The Bottom Line

Folsom is tougher than many cities when it comes to tree protection. Out of the 3 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Folsom, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

All of the above reflects Folsom's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.