Oak ordinance: ag land only
The county's tree protection ordinance covers deciduous oaks only on agricultural-zoned land — development projects that remove oaks must address impacts through environmental review, not a standard removal permit.
California unincorporated profile
Outside the boundaries of incorporated cities and towns, the Santa Barbara County government is the planning and permitting lead agency. That means county zoning, county building codes, and county environmental review apply directly — without a separate city layer. The county rules most likely to catch a project applicant off guard are listed below.
These Santa Barbara County rules apply directly to projects in unincorporated areas of the county, with no city-level overlay.
The county's tree protection ordinance covers deciduous oaks only on agricultural-zoned land — development projects that remove oaks must address impacts through environmental review, not a standard removal permit.
Because the county is in nonattainment for particulate matter air standards, fugitive dust control measures are required on all discretionary projects — there's no minimum size threshold. Even a modest residential grading project must implement a dust mitigation plan.
After the Thomas Fire burned the mountains above Montecito, a catastrophic debris flow destroyed over a hundred homes in minutes. Projects in or below fire-burned terrain must now assess post-fire debris flow risk as a separate hazard — distinct from the fire hazard itself.
The county's coastline west of Santa Barbara includes some of the longest remaining undeveloped rural coast in southern California, governed by a Gaviota Coast Plan that took more than a decade to adopt and imposes specific conditions on what can be developed there.
The county's stormwater rules follow Central Coast requirements that kick in at a very small amount of new impervious surface — one of the lowest triggers in California — so even modest improvements to a rural property can require a water quality treatment plan.
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Screen an addressSource: Headlands Environmental — environmental site screening for California. Rules summarized from publicly available county codes and planning documents; project review counts indexed from the State Clearinghouse. For authoritative requirements, consult Santa Barbara County directly.