Building Permits in Los Osos, CA

Concrete slabs (sidewalks, patios on grade, garage floors) typically require a permit when they exceed a size threshold (commonly 200 sq ft) or are within setback areas. Slabs serving as foundations for permitted structures (ADU, garage, addition) are covered by the primary permit. IRC R506 covers concrete floors on ground. To confirm requirements for your specific project in Los Osos, CA, contact San Luis Obispo County Department of Planning & Building at (805) 781-5600. Apply online: https://sanluisobispocountyca-energovweb.tylerhost.net/apps/selfservice#/home.

New driveways and driveway extensions typically require a permit when they connect to a public street (driveway approach / curb-cut permit from the public works department), when they exceed lot-coverage limits, or when they are within setback areas. State-maintained roads require a separate state DOT driveway permit. To confirm requirements for your specific project in Los Osos, CA, contact San Luis Obispo County Department of Planning & Building at (805) 781-5600. Apply online: https://sanluisobispocountyca-energovweb.tylerhost.net/apps/selfservice#/home.

Fence permits depend mostly on height: fences 6 feet or less in the rear/side yard are commonly exempt, fences over 6 feet require a permit, and front-yard fences are limited to 3 to 4 feet in most jurisdictions. Pool fences must meet IRC R326 / state code self-closing latch requirements. To confirm requirements for your specific project in Los Osos, CA, contact San Luis Obispo County Department of Planning & Building at (805) 781-5600. Apply online: https://sanluisobispocountyca-energovweb.tylerhost.net/apps/selfservice#/home.

Ground-level paver patios under 200 sq ft are commonly exempt from a building permit. Patios with footings, retaining walls over 4 feet, gas/electrical for an outdoor kitchen, or that drain toward neighbors typically require a permit. Lot-coverage limits apply. To confirm requirements for your specific project in Los Osos, CA, contact San Luis Obispo County Department of Planning & Building at (805) 781-5600. Apply online: https://sanluisobispocountyca-energovweb.tylerhost.net/apps/selfservice#/home.

Sheds and outbuildings 200 sq ft or less are typically exempt from a building permit but still must meet zoning setbacks (commonly 3 to 5 feet from property line) and lot-coverage limits. Sheds over 200 sq ft or with utilities require a permit. Some HOAs ban sheds outright. To confirm requirements for your specific project in Los Osos, CA, contact San Luis Obispo County Department of Planning & Building at (805) 781-5600. Apply online: https://sanluisobispocountyca-energovweb.tylerhost.net/apps/selfservice#/home.