POL Government Elected Officials Auditor Mary Hull Caballero Charter, Code & Policies City Code & Charter Online Code & Charter Title 29 Property Mainten Chapter 29.35 Maintenance Requirements for the Exterior of Non-Residential Structures.
29.35.040 Chimneys.

Every masonry, metal, or other chimney shall remain adequately supported, structurally sound and free from obstructions and shall be maintained in good repair and sound condition which ensures there will be no leakage or backup of noxious gases.  Loose bricks or blocks shall be rebonded. Loose or missing mortar shall be replaced.