Bellingham, WA Tree Protection: Protected Tree Species (2026)
Key Facts
- Protected threshold
- 6-inch diameter, any species
- Trigger
- Building/street/utility permit
- Requirement
- Tree retention plan
- Replacement
- Ratio set by PCDD
Summary
Bellingham protects trees by size, not species: any tree six inches or more in diameter counts as a 'significant tree' and triggers a retention plan and replacement ratio before it can be cleared for development.
“Significant tree” means a tree of any species that is six inches in diameter or greater measured at breast height. ... A tree retention plan is provided that identifies the species and size of all significant trees on site... Significant trees that must be removed shall be replaced at a ratio to be determined by the PCDD.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 2026-06-015, passed June 1, 2026).
Full Breakdown
Under Bellingham Municipal Code Chapter 16.60, Land Clearing, a 'significant tree' is any species six inches or greater in diameter at breast height (BMC 16.60.040). Nonexempt clearing tied to a building, street, or utility permit requires a tree retention plan identifying every significant tree on site, marking which will be removed versus preserved, and protecting the critical root zone of retained trees during construction. Trees that must come down are replaced at a ratio the Planning and Community Development Department sets case by case (BMC 16.60.080(B)(4)). Clearings under 500 square feet outside critical areas are exempt.
Violations & Fines
Unpermitted clearing or removal of significant trees is a misdemeanor, fined up to $1,000 per offense per day, plus city-ordered restoration costs (BMC 16.60.090).
Frequently Asked Questions
What makes a tree 'protected' in Bellingham?
Do I need a permit to cut down trees on my Bellingham property?
Sources & Official References
Other rules in Bellingham
Compare Bellingham to another location·View the Washington tree protection overview
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