Exceptional trees on the Honolulu register are protected by ROH Chapter 40 Article 8, affecting several notable specimens in East Honolulu estates.
ROH Chapter 40 Article 8 creates Honolulu's heritage-tree framework, including definitions (Section 40-8.2), the Arborist Advisory Committee (Section 40-8.3), and the register of exceptional trees (Section 40-8.7). In East Honolulu, several mature specimens on private estates in Portlock and along Kalanianaole Highway are candidates for or already included in the register. Removal or destruction of a designated exceptional tree requires prior City Council approval. Alteration or trimming requires a permit from the Department of Parks and Recreation. Emergency provisions in Section 40-8.9 allow removal if a tree poses imminent danger.
Unauthorized removal of an exceptional tree can trigger substantial penalties, replacement requirements, and civil liability. Violations are investigated by DPR and the Arborist Advisory Committee.
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