Practical reference guides compiled by CanopyMetrics. Independent expertise, no sales pitch.
Subrogation-ready tree damage documentation: five non-negotiable report elements, California Rule 26 compliance, and North Bay-specific causation arguments.
Read the guide →TPZ requirements, common compliance failures, and the components of a defensible TPZ plan — covering all 10 North Bay jurisdictions.
Read the guide →An annotated walkthrough of an ISA TRAQ Level 2 report — all 8 sections explained with sample lines, risk matrix tables, and defensible methodology notes.
Read the walkthrough →California neighbor tree-fall liability: what evidence to collect, what an arborist report must establish, and how foreseeability determines liability outcomes.
Read the guide →Protected species, permit triggers, arborist report requirements, mitigation standards, and penalties for Marin, Sonoma, and Napa counties — including all major municipalities.
Read the reference →Straight answers on arborist report scope, expert witness admissibility, Rule 26 / CCP 2034 disclosures, and engagement timelines — written for attorneys and claims counsel.
Read the FAQ →Anonymized outcomes from North Bay litigation engagements — a Marin County heritage oak TPZ dispute and a Sonoma County insurance subrogation recovery.
Read the cases →A forthcoming reference guide for North Bay developers, architects, and applicants navigating tree-related permitting requirements across Marin, Sonoma, and Napa.
Read the guide →Plain-language answers to the most common property-owner questions about tree-protection ordinances in Marin, Sonoma, and Napa: when permits are required, what counts as a heritage tree, root intrusions, neighbor disputes, removal vs pruning, and replacement requirements.
Read the FAQ →