Northshore Fire Chief Mike Ciancio said the fire was reported at 11630 Beryl Way shortly before 8:30 a.m.
In addition to Northshore Fire, Lake County Fire and Cal Fire responded, Ciancio said.
He said firefighters managed to knock down the fire very quickly upon arrival.
Ciancio said the fire involved an RV and an upstairs apartment in a nearby garage. The fire was contained to the property.
There were two people on the property at the time and one man was taken to Adventist Clear Lake Hospital for smoke inhalation. He was later released, Ciancio said.
A fire investigator responded to the scene and arrived shortly before 1 p.m., according to radio traffic.
Ciancio said investigators are called in when a fire’s cause is not apparent or is more difficult to determine.
Based on radio reports, Ciancio also remained on scene until later in the afternoon as the investigation and mop up continued.
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