Los Angeles County Municipal Code § 903.2 Fire Code

An automatic sprinkler system installed in accordance with Section 903.3 shall be provided throughout all buildings with a Group-R fire area.

Fire sprinkler systems shall be installed in mobilehomes, manufactured homes and multifamily manufactured homes with two dwelling units. The system design and the installation process shall be in accordance with Title 25 of the California Code of Regulations.

Exceptions:

. . .

In all occupancies other than Group U, an automatic sprinkler system shall be installed for building design or hazards in the locations set forth in Sections 903.2.11.1 through 903.2.11.7.

Monica Mountains Area.

An automatic fire sprinkler system shall be installed in every occupancy which is newly constructed or which is modified, reconstructed, or remodeled by adding 50 percent or more of the floor area of the existing occupancy, within any 12-month period, where the occupancy is located in a fire hazard severity zone and within the San Gabriel Mountains Southface Area or the Malibu—Santa Monica Mountains Area, as defined in Appendix PP.

Exceptions:

Occupancies located in the San Gabriel Mountains Southface Area and which are located 3 miles or less from the closest existing or planned Los Angeles County Fire Station capable of supporting firefighting resources are exempt from the fire sprinkler requirement. Travel distances shall be measured by the most direct route on streets or roads accessible to fire department apparatus.

Occupancies modified, reconstructed, or remodeled by adding 50 percent or more of the floor area of the existing occupancy, where the total floor area of the occupancy after the modification, reconstruction, or remodel is less than 5,000 square feet (465 m 2 ), are exempt from the fire sprinkler requirement.

Detached private garages, sheds, and agricultural buildings less than 1000 square feet (92 m 2 ) in area and separated from other structures by a minimum of 6 feet (1829 mm), are exempt from the fire sprinkler requirement.

Detached gazebos, pergolas, and carports open on two or more sides, that are separated from other structures by a minimum of 6 feet (1829 mm) are exempt from the fire sprinkler requirement.

Detached Group-U occupancies, separated from other structures by a minimum of 6 feet (1829 mm), built entirely out of noncombustible materials, and with no combustible storage, are exempt from the fire sprinkler requirement.

For the purposes of this subsection, "planned Los Angeles County Fire Station" means a fire station, approved by the Consolidated Fire Protection District of Los Angeles County that will be developed within five years from the date of building permit application for the subject development.

The Board of Supervisors finds it necessary to impose these requirements upon the issuance of a building permit because a failure to do so would place the residents of the subdivision or the immediate community, or both, in a condition perilous to their health or safety, or both.