Heads up: There are no suggested sections in this chapter.
Heads up: There are no amended sections in this chapter.
The provisions of this chapter shall be used in conjunction with Chapters 7 through 12 and shall apply to the alteration, addition and change of occupancy of existing structures, including historic and moved structures, as referenced in Section 301.3.2. The work performed on an existing building shall be classified in accordance with this chapter.
Alterations, additions and changes of occupancy to existing structures shall comply with the provisions of Chapters 7 through 12 or with one of the alternatives provided in Section 301.3.

The work area, as defined in Chapter 2, shall be identified on the construction documents.

Level 1 alterations include the removal and replacement or the covering of existing materials, elements, equipment, or fixtures using new materials, elements, equipment, or fixtures that serve the same purpose.
Level 1 alterations shall comply with the provisions of Chapter 7.
Level 2 alterations include the reconfiguration of space, the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment.
Level 2 alterations shall comply with the provisions of Chapter 7 for Level 1 alterations as well as the provisions of Chapter 8.
Level 3 alterations apply where the work area exceeds 50 percent of the building area.
Level 3 alterations shall comply with the provisions of Chapters 7 and 8 for Level 1 and 2 alterations, respectively, as well as the provisions of Chapter 9.
Change of occupancy provisions apply where the activity is classified as a change of occupancy as defined in Chapter 2.
Changes of occupancy shall comply with the provisions of Chapter 10.
Provisions for additions shall apply where work is classified as an addition as defined in Chapter 2.
Additions to existing buildings shall comply with the provisions of Chapter 11.
Historic building provisions shall apply to buildings classified as historic as defined in Chapter 2.
Except as specifically provided for in Chapter 12, historic buildings shall comply with applicable provisions of this code for the type of work being performed.
Relocated building provisions shall apply to relocated or moved buildings.
Relocated buildings shall comply with the provisions of Chapter 14.
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