Skip to main content

COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at

The Department of Planning and Building Permit Center is open by appointment only for limited building permit intake, correction returns/pick-up and to schedule virtual meetings. To submit electronic Building Permit or Land Use Permit Applications please visit  our website.

Return to the top of the page
County Seal

Planning & Building

County of San Luis Obispo

Septic System Operation and Maintenance

Infographic depicting ways to prolong the use of the septic system. For more information, visit

Septic System Forms

Property owners shall have a licensed septage hauler inspect the onsite wastewater system at the time that the tank is pumped and septage is removed. The maintenance technician shall complete the Septic Tank Inspection Report and provide a copy to the system owner and the Department of Planning & Building. 

Applicants seeking to permit additions or modifications for an existing structure with an onsite wastewater treatment system must complete the Existing Septic Verification Form and submit a Plot Plan. 

The Department encourages property owners to consider the Top 10 Ways to be a Good Septic Owner and to have systems inspected and pumped every 3 to 5 years. The County’s Environmental Health Department maintains a program for Permitted Liquid Waste Haulers who are authorized to pump septic systems.

Frequently Asked Questions