(A) § 1103.5.5 of the 2021 International Fire Code is hereby added to read as follows:
(1) Additions to existing R3 occupancy residential buildings that increase the total square footage by 50% or more of the existing floor area shall meet the requirements for new construction. Additions to all Group R occupancy residential buildings with an existing approved automatic sprinkler system shall be required to extend the sprinkler system into the addition.
(2) Additions to an existing Group R-3 occupancy creating a required a fire flow of more than two thousand GPM as determined by Appendix B of the California Fire Code.
(B) § 1103.5.6 of the 2021 International Fire Code is hereby added to read as follows:
(1) Additions to existing commercial buildings that increase the total square footage of existing floor area by 50% or greater shall meet the requirements for a newly constructed building. All additions to commercial buildings with an existing approved automatic sprinkler system shall be required to extend the sprinklers into the addition.
(2) Additions to an existing commercial building creating a required fire flow of more than two thousand GPM as determined by Appendix B of the California Fire Code.
(C) § 1103.5.7 of the 2021 International Fire Code is hereby added to read as follows:
(1) Additions to existing Group R-1 occupancies that result in additional guest room(s) units shall meet the requirements for a newly constructed building.
(D) § 1103.5.8 of the 2021 International Fire Code is added to read as follows:
(1) For remodels, alterations or repairs to an existing building involving demolition, removal or repair of more than 50% of the existing structure, the building shall meet the automatic fire sprinkler requirements for a newly constructed building. For purposes of this section, the "50%" threshold shall be applied if the project involves any of the following:
(a) The removal, demolition or repair of more than 50% of the exterior weight bearing walls; or
(b) The removal, demolition or repair of more than 50% of the roof structure (including the framing, sheathing, and roof covering of a building but not limited to rafters, trusses, beams, purlins); or
(c) The removal, demolition or repair of more than 50% of the interior tenant improvements on a commercial building which reduces the building to a shell condition.
(Ord. 1055, passed 11-19-2019; Am. Ord. 1070, passed 11-15-2022)