According to the CHP, the incident happened just before 7:30 a.m.
Officials said the woman was driving westbound on Point San Pedro Road when she veered off the road, and ended up in the pool at a residence on Bonnie Banks Way.
According to CHP Officer Darrel Horner, the woman wasn’t wearing a seat belt.
San Rafael Police and San Rafael Fire Department were first to arrive on the scene, and the driver was pronounced dead, Horner said.
It’s unclear why the car veered or whether it was in autopilot at the time of the crash.
Bay City News contributed to the report.