Siskiyou County, CA Short-Term Rentals: Occupancy Limits (2026)

Section 10-6.6104(G) sets the headcount: the maximum occupancy of a vacation rental is limited to two occupants per bedroom plus a total of two additional occupants, and the maximum occupancy shall not exceed the capacity of the septic system. A three-bedroom home, for example, would allow up to eight occupants (six plus two) only if the septic system can support that load. Section 10-6.6104(F) requires the occupancy allowance to meet the Uniform Housing Code and to comply with existing state and local water and sewage disposal regulations, including testing of a private water supply where applicable. Because septic capacity is a hard ceiling, the Environmental Health Division inspection required before permit issuance (Section 10-6.6104(J)) effectively verifies the allowable occupancy. The required posted notice inside the rental (Section 10-6.6109) must include a list of unacceptable items for septic disposal, reinforcing that occupancy and septic limits are linked. These are the County's own standards for the unincorporated area; individual cities such as Mount Shasta or Weed set their own separate occupancy rules.