The City of Bainbridge Island enforces strict tree canopy retention laws and Critical Area Ordinances (CAO). Removing significant trees or clearing land often requires a municipal permit, arborist evaluation, and adherence to minimum tree unit requirements per acre.
Key Tree Retention Ordinances
Bainbridge Island values its lush evergreen forest canopy. The City regulates tree cutting under BIMC 18.15.010:
- Significant Trees: Defined as any healthy tree with a Diameter at Breast Height (DBH) of 12 inches or greater (or 8 inches for certain native species).
- Permit Requirements: Removing more than a minimal allowance of significant trees within a given timeframe requires a formal Tree Removal Permit and site review.
- Hazard Trees: Dead, dying, or structurally dangerous trees may be removed following documentation and confirmation by an ISA-certified arborist.
Critical Area Ordinance (CAO) Protections
Properties containing wetlands, steep slopes (geologically hazardous areas), streams, or wildlife habitat buffers are subject to additional protections. Development or clearing within CAO buffers is strictly managed to protect water quality and prevent landslide hazards.
