California Security Management was founded by Dennis Sigmon Sr. in 1989. Prior to starting the company Dennis Sr. earned a degree in Criminal Justice and then worked as an advanced police officer with the Ashland, Oregon police department for several years. In 1984 Dennis moved his family to Santa Rosa, California. He tried to get a get a job with the Santa Rosa Police Department but at the time they were not hiring, so he went to work for different security companies. Around 1989 Dennis met Bill Dayton and they started California Security Management. Dennis’s first job was watching Nell Codding. Over the months he would befriend her. She hired him to do security for Montgomery Village Shopping Center and Coddingtown Mall. Over the years.
California Security became one of the biggest companies in town working for the City of Santa Rosa and other large businesses. Eventually Dennis Sr. bought Bill Dayton out of the company, becoming its sole owner. Around 1995 Dennis decided that his business needed a more personal touch and downsized so that he could focus on servicing Santa Rosa only.

Over the years CSM prided itself on making new friends with our customers and providing them with excellent service..
In 1997 Denny Sigmon Jr. (Dennis’ son) began taking an active role in the company. On the night of October 8 th  2017, Santa Rosa was changed forever by the Tubbs fire. Denny Sigmon and Dennis Sigmon Sr. sprung into action. Together Dennis Sr. and Denny, worked tirelessly to help secure their customers’ properties and to keep everyone informed. Dennis Sr. focused on coordinating matters from the office while Denny was out checking on customers to
make sure that their properties were safe and helping where he could.

After the fires ended,there was still a lot of work to do. This included 24 hour standing guard helping out our elderly
in Oakmont, one of Santa Rosas largest retirement communities. We eventually learned that we were one of the few companies that went out the night the fires started.
Unfortunately, on the night of September 27 2020, Santa Rosa had another fire, this time threatening Napa County, Skyhawk subdivision and Oakmont. Once again Denny and Dennis went into emergency mode and while people were trying to get out of Oakmont, Denny was trying to get in to help where he could. Oakmont was very lucky and the fire stopped before any major damage was done to Oakmont. Once again we were stationed in Oakmont for a week making sure everything was okay.
After many years of drought and fires we are hopeful to see Santa Rosa get back on its feet. CSM now has a dedicated email address that comes online whenever there is an emergency so our customers can reach us even faster during a disaster. We also send out emails to all our customers letting them know what to expect. We consistently put extra guards on duty during emergencies and other times of need. CSM is here to help. A customer might need some extra help from time to time with security. It is very common to hear Denny say “Not a problem and let me grab my shoes.” Then run out the door to help. We do not charge for this service one bit. It’s just something CSM does that other companies don’t. CSM does not have an answering service in another town, let alone another state. When you call us you will most likely get Denny. Not someone who has no idea what your needs are or where Santa Rosa is.

In August 2021 Dennis Sigmon Sr. passed away and Denny took over ownership.
WE ARE HERE TO HELP YOU.