Pomona, CA Landscaping Rules: Tree Trimming (2026)
Key Facts
- Historic Districts
- Certificate of Appropriateness required
- Street Trees
- City-managed per Street Tree Policy
- Standards
- ISA pruning standards
- Code
- Ch. 46, Art. X / Ch. 18, Art. V
Summary
Pomona regulates tree trimming under its Tree Preservation Program and Street Tree Policy Manual. Trees in historic districts require a Certificate of Appropriateness before trimming. Street trees follow ISA pruning standards.
99] ( Chapter 3 added by Stats. 1965, Ch. 1144. ) 4291. (a) A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall at all times do all of the following: (1) (A) Maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line, except as provided in subparagraph (B). The amount of fuel modification necessary shall consider the flammability of the structure as affected by building material, building standards, location, and type of vegetation. Fuels shall be maintained and spaced in a condition so that a wildfire would be unlikely to ignite the structure.
Full Breakdown
All city street trees, mature significant trees, and specimen (heritage) trees on historic sites must be pruned or trimmed consistent with the adopted trimming policies in the City of Pomona Street Tree Policy Manual and professionally accepted tree trimming standards. Trimming or removal of trees threatening life, property, or essential services is exempt from requiring a Certificate of Appropriateness. Trimming trees that block visibility is also exempt. The utilization of palm trees within landscape plans is strictly prohibited in certain new development projects.
Violations & Fines
Improper trimming of street trees or heritage trees may require administrative review under the Historic Preservation Ordinance. Unauthorized removal of significant trees may result in penalties.
Frequently Asked Questions
Can I trim tree branches that hang over my property in Pomona?
Do I need a permit to trim trees in Pomona?
Sources & Official References
Other rules in Pomona
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