{"id":140,"date":"2026-03-11T12:00:00","date_gmt":"2026-03-11T12:00:00","guid":{"rendered":"https:\/\/california.shuster.info\/?p=140"},"modified":"2026-03-11T12:00:00","modified_gmt":"2026-03-11T12:00:00","slug":"yan-city-diamond-bar-tree-branch-falls-notice-dangerous-condition","status":"publish","type":"post","link":"https:\/\/california.shuster.info\/?p=140","title":{"rendered":"Yan v. City of Diamond Bar \u2014 Prior branch falls from same species of street tree are admissible to show city’s notice of dangerous condition"},"content":{"rendered":"
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\n
Case<\/dt>\n
Yan v. City of Diamond Bar<\/dd>\n
Court<\/dt>\n
2nd District Court of Appeal<\/dd>\n
Date Decided<\/dt>\n
2026-03-11<\/dd>\n
Docket No.<\/dt>\n
B339583<\/dd>\n
Status<\/dt>\n
Reported \/ Citable<\/dd>\n
Topics<\/dt>\n
Government Code section 835, dangerous condition of public property, public entity liability, street trees, notice, similar incident evidence, lay witness testimony<\/dd>\n<\/dl>\n<\/div>\n

Background<\/h2>\n

In July 2018, Lulin Yan was walking on a sidewalk along Montefino Avenue in the City of Diamond Bar when an eight-inch-diameter limb detached from the upper canopy of a Bradford pear street tree, snapped off two lower branches, and crashed onto him. He was hospitalized for three days with a compression fracture of his spine. The City of Diamond Bar owns the Bradford pear trees lining its streets and contracts with a third-party arborist to trim them on a five-year geographic grid, irrespective of species.<\/p>\n

The particular tree that injured Yan had not been trimmed between 2005 and 2015. The City’s records, prompted largely by complaints from a neighborhood homeowners’ association president named Robert Ludowitz, showed that the same tree had experienced two prior branch failures in the five years before the accident, and that other Bradford pear trees in the same neighborhood had experienced nine branch failures over the same period.<\/p>\n

Yan sued the City under Government Code section 835, which makes a public entity liable for injury caused by a dangerous condition of its property if the entity had actual or constructive notice of the condition. At trial, the jury was allowed to hear evidence of the prior branch failures from the same species in the neighborhood and to hear from Ludowitz himself, even though he was not an arborist and had not always seen the limbs fall. The jury found the City liable. The City appealed, conceding the sufficiency of the evidence but challenging the admission of the prior incident evidence and Ludowitz’s testimony.<\/p>\n

The Court’s Holding<\/h2>\n

The Second District Court of Appeal, Division Five, in a partially published opinion, affirmed. On the central published issue, the court held that the trial court did not abuse its discretion in admitting evidence of prior branch failures in nearby Bradford pear trees over the five-year period before the accident. Evidence of similar incidents is admissible to show notice of a dangerous condition when the prior incidents are sufficiently similar in time, location, and nature. Here, the prior incidents involved the same species of tree, in the same neighborhood, in the same general time frame, and the same kind of failure (limbs detaching and falling).<\/p>\n

Crucially, the evidence was admitted only on the question of notice, not as direct proof that the specific tree was dangerous. The trial court instructed the jury accordingly. The City’s argument that prior incidents must involve the very same tree was rejected. The Government Code requires notice of the dangerous condition, and a pattern of branch failures in similar trees in the same area gives the City reason to investigate and remediate the risk posed by the species generally.<\/p>\n

In the unpublished portion of the opinion, the court rejected the City’s objections to Ludowitz’s testimony. The City’s argument that Ludowitz lacked qualifications to opine on causation failed because the City itself elicited that testimony on cross-examination. The City’s argument that Ludowitz could not testify because he did not see the limbs fall was rejected because no expertise is required to report a fallen limb or infer that a limb at the foot of a tree fell from that tree. Lay witnesses can report what they observed and rationally inferred under Evidence Code section 800.<\/p>\n

Key Takeaways<\/h2>\n