Ventura County requires replacement plantings when protected oak trees are removed in unincorporated areas. Replacement ratios range from 3:1 to 10:1 depending on tree size and significance, with monitoring requirements of 5-7 years.
When a protected oak tree is approved for removal in unincorporated Ventura County, the county requires compensatory replacement plantings. Standard replacement ratios are 3:1 for trees under 20 inches in diameter and up to 10:1 for larger or more significant specimens. Replacement trees must be native oak species from local genetic stock, typically 15-gallon or 24-inch box size. The property owner must maintain replacement trees for 5-7 years with annual survival monitoring. If replacement trees die within the monitoring period, additional plantings are required. When on-site replacement is not feasible, the county may allow off-site planting or payment into a tree mitigation fund. The mitigation fund supports oak woodland restoration projects in the county.
Failure to plant required replacement trees: enforcement action and additional penalties of $1,000-$5,000. Dead replacement trees must be replanted within one planting season. Non-compliance with monitoring requirements may result in extended monitoring periods and additional mitigation. The county may place a lien on the property for outstanding mitigation obligations.
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Side-by-side rule comparisons with other cities in Ventura County.
See how other cities in Ventura County handle tree replacement requirements.
See how Simi Valley's tree replacement requirements rules stack up against other locations.
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