To make an appointment with Planning and Building staff, please use the following link: No Wait Inside. Walk-ins are available Mondays and Fridays from 8:30 – 11:45 AM and are limited to 15-minutes each to accommodate as many people as possible.
To submit electronic Building Permit or Land Use Permit Applications, please visit the Permitting page.
Director of Planning & Building
Public Information and Permit Processing Online Services
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Instructions for submitting permit for septic repairs
Onsite Wastewater Treatment Systems
Local Agency Management Program 2020
Applicants reference this map to determine minimum parcel size for subdivision of parcels served by onsite wastewater treatments systems (OWTS)
Property owners and qualified professionals use this form to report the capacity and condition of the existing septic system (OWTS) to the County. (Form BLD-1019).
Information for homeowners on proper operation and maintenance of residential septic systems (OWTS-English).
Information for homeowners on proper operation and maintenance of residential septic systems (OWTS-Español).
A list of the most frequently asked questions regarding the Local Agency Management Program for Onsite Wastewater Treatment Systems (BLD-2026)
Map of Los Osos OWTS Prohibition Zone
Informational tips for property owners on prolonging the functionality of septic systems (OWTS-English).
Informational tips for property owners on prolonging the functionality of septic systems (OWTS-Español).
Qualified professionals use this form to report the results of septic system (OWTS) inspections to property owners and the County. (Form BLD-1030).
State of California policy regulating Onsite Wastewater Treatment Systems (OWTS Policy)
10 Tips for property owners to follow for maintaining septic systems (OWTS) in optimal condition from the EPA.
Guidelines for establishing an outdoor greywater disposal system for single family residential washing machines. (Form BLD-2008)