Located in the San Francisco Bay Area. Lists provided services and related resources.

Dedicated to the research, investigation, and documentation of hauntings in Northern California. Includes calendar of events, articles, photographs, and audio/video recordings.

Offers investigative services to the San Francisco area. Provides an equipment list, casebook, and FAQ.

Investigates all forms of supernatural activity. Includes member bios, links, EVPs, and images.

Based in the Los Angeles area. Focuses on spirit photography. Provides galleries, audio/video recordings, forums, and a directory.

Researches and investigates phenomena throughout Southern California. Offers a library, image galleries, recordings, forums, and an equipment list.

Details about the organization and opinions of the spirit world. Also provides submitted accounts, galleries, and lists of haunted locations. Located in Anderson, California.

Attempts to combine theories of metaphysics and parapsychology in order to explain haunts. Offers member bios, images, upcoming events, and details about the group.

Based in San Gabriel Valley. Provides recordings, image galleries, investigative articles, and a directory.

Includes details about the organization and provided services, training information, client testimonials, and lists of haunted locations.

Provides submitted accounts and stories from the Lake Tahoe area.

Based in Lancaster. Includes articles, video and EVP, images, and links.

Located in Orange County. Includes galleries, case studies, audio/video recordings, and forums.

Provides a library of resource articles, forums, case write-ups, and relevant book titles.