Local code questions behind chimney cap installation
Much of Rancho Palos Verdes is mapped as a Very High Fire Hazard Severity Zone, which puts the spark arrestor on every wood-burning chimney under close watch from fire officials and insurers. In and near the Portuguese Bend landslide area, ground movement can crack a chimney from below, so a Level 2 camera scan is often the honest place to start. We see single-flue brick, shared multi-flue stacks and factory-built chases in this area, and each gets inspected to its own rulebook.

