Draw up a business plan. Among other things, the plan should include a mission statement, operational plans, financial projections and goals. Decide if you want the school to be a three-month program for first-time offenders, an 18-month program for multiple offenders, a 29-month program, or all of the above. Determine how large of a facility you want to operate, and in what region. If you have no experience in creating a business plan and don't know where to start, hire a consultant such as an attorney to help guide you through the process.
Apply for a business license with your county regulatory body. First, contact your county's alcohol and drug program administration to find out whether new applications for DUI schools are being accepted. If so, obtain an application packet from your local DUI branch and submit it to your local alcohol/drug program administration. The county then submits your application to the Board of Supervisors for approval. If the supervisors approve, you'll pay a non-refundable $400 application fee to the state Department of Alcohol and Drug Programs in order to receive a license to open and operate the school.
Find a location for the business. An appropriate area is essential. Since many of your potential clients may have had their driving privileges suspended or revoked, locate in an area that's near public transportation, if possible. Once you've identified an area or areas, look into the local zoning laws to make sure your school will be compliant. If the school will be near a residential area, address the concerns of homeowners, so they don't try to block the school from opening in the neighborhood.
Hire an instructor or instructors for the school. California has certain educational requirements for instructors at substance abuse counseling programs. Perform background checks and contact references to make sure your instructors meet the requirements.