Overton Security Services, Inc. is a family owned and operated security provider, servicing Northern California. In 1998 Mr. Andrew Overton and Mrs. Sandy Overton acquired a small local security company in Fremont, California that had been established in 1994, and from this modest beginning, Overton Security Services has grown to be one of the largest and most respected security providers in its service area. To better serve our growing client list, Overton Security Services has established offices throughout California.