Bellingham, WA Tree Protection: Tree Replacement Requirements (2026)

Bellingham's replacement framework is project-driven rather than a flat 1:1 ratio in code. Under BMC 16.60.080 (Requirements and procedures), where land clearing is part of a building, street, or utility permit, the applicant must submit a tree retention plan that identifies the species and size of all significant trees on site (significant tree = any species 6 in. DBH or greater per BMC 16.60.040), and shall identify all trees that will be removed and preserved, including the method by which the critical root zone of retained trees will be protected during construction (such as fencing). Significant trees that must be removed shall be replaced at a ratio to be determined by the PCDD. The process for review and approval of clearing is the same as the associated building, street, or utility construction permit. Within the Lake Whatcom watershed, BMC 16.80.080 requires that at least 30% of the total site area be retained or restored to the natural forested condition (forest canopy plus multi-layer understory) as the NVPA — restoration plantings must be native vegetation, and the area must be protected in perpetuity by covenant or conservation easement to the City. For street-tree replacement under BMC Chapter 13.40, the City of Bellingham approved street tree list (Compiled June 24, 2025) governs species choice, and any new street tree planted requires a Street Tree Permit. Landmark trees lost in violation of the Emergency Landmark Tree Ordinance can be subject to City-required replacement as part of penalty resolution.