8130.10. - AMENDMENT.

Section 903.3.1.3 of the 2025 California Building Code is amended to read as follows due to local climatic, geographical, and topographical conditions:

903.3.1.3. NFPA 13D SPRINKLER SYSTEMS. Where allowed, automatic sprinkler systems installed in one- and two-family dwellings shall be installed throughout in accordance with NFPA 13D with the following additions:

A)

Attics containing forced air units shall have one or more quick-response intermediate temperature sprinkler heads adjacent to each unit.

B)

Attached private garages shall be sprinklered and shall have a design density of an Ordinary Hazard Group 1 occupancy with a design area of two (2) heads. Quick-response intermediate temperature commercial type heads shall be used for the garage area.

C)

Detached private garages over 1000 square feet in total area shall be sprinklered and shall have a design density of an Ordinary Hazard Group 1 occupancy with a design area of two (2) heads. Quick-response intermediate temperature commercial type heads shall be used for the garage area.

D)

Residential structures under 5000 square feet in total area shall be designed for two (2) heads flowing in the residential area. Residential structures over 5000 square feet in total area shall be designed for four (4) heads flowing in the residential area.

E)

Attics and basements used for storage purposes shall be fully sprinklered with residential type heads.

F)

A single exterior bell activated by the waterflow switch shall be provided at an approved location.

G)

A representative sample of spare heads shall be provided at an approved location.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)

Section 903.6 of the 2025 California Building Code is added to read as follows due to local climatic, geographical, and topographic conditions:

903.6. EXISTING BUILDINGS. An approved automatic fire sprinkler system shall be installed in existing buildings, including any additions thereto, in the occupancies and buildings as set forth in this section.

In all commercial and industrial buildings greater than 5000 square feet in area when enlarged by an addition to the existing structure or as required by the Fire Chief.

In all commercial and industrial buildings equal to or less than 5000 square feet in area, when enlarged by an addition to the existing structure, exceeds 5000 square feet or as required by the Fire Chief.

In all Group R-1 or R-2 Occupancies when an addition results in additional guestrooms or dwelling units.

In all Group R-3 Occupancies greater than 2500 square feet in living area when enlarged by an addition to the living area of the existing structure.

EXCEPTIONS:

Additions of areas that would not require sprinklers such as closets or bathrooms.

Additions that occur without increasing the number of stories or increasing the horizontal projection of the first story roof.

In all Group R-3 Occupancies equal to or less than 2500 square feet in living area, when enlarged by an addition to the living area of the existing structure, exceeds 2500 square feet in residential area.

EXCEPTIONS:

Additions of areas that would not require sprinklers such as closets or bathrooms.

Additions that occur without increasing the number of stories or increasing the horizontal projection of the first story roof.

In existing buildings for new occupancies as required by other sections of the Fire Code.

(Ord. No. 2366, § 3, 12-17-19; Ord. No. 2394, § 3, 11-15-22; Ord. No. 2408, § 3, 11-18-25)