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to human life A building so altered, which involves a change in use or occupancy, shall not <br /> exceed the height, number of stories and area permitted by the Building Code for new <br /> buildings A building plus new additions shall not exceed the height, number of stories and <br /> area specified by the Building Code for new buildings <br /> Additions or alterations shall not be made to an existing building or structure when the <br /> existing building or structure is not in full compliance with the provisions of the Building <br /> Code except when the addition or alteration will result in the existing building or structure <br /> being no more hazardous based on life safety, fire safety and sanitation, than before such <br /> additions or alterations are undertaken <br /> EXCEPTION: Alterations of existing structural elements, or additions of new structural <br /> elements which are initiated for the purpose of increasing the lateral-force resisting <br /> strength or stiffness of an existing structure need not be designed for forces conforming <br /> to these regulations provided that an engineering analysis is submitted to show that <br /> 1 The capacity of existing structural elements required to resist forces is not <br /> reduced, and <br /> 2 The lateral loading to required existing structural elements is not increased <br /> beyond their capacity, and <br /> 3 New structural elements are detailed and connected to the existing structural <br /> elements as required by these regulations, and <br /> 4 New or relocated nonstructural elements are detailed and connected to existing <br /> or new structural elements as required by these regulations, and <br /> 5 An unsafe condition as defined above is not created <br /> Alterations or repairs to an existing building or structure which are nonstructural and do not <br /> adversely affect a structural member or a part of the building or structure having required <br /> fire resistance may be made with the same materials of which the building or structure is <br /> constructed, subject to approval by the Building and Safety Official Installation or <br /> replacement of glass shall be as required for new installations <br /> Minor additions, alterations and repairs to existing building service equipment installations <br /> may be made in accordance with the technical code in effect at the time the original <br /> installation was made, subject to approval of the Building and Safety Official, and provided <br /> such additions, alterations and repairs will not cause the existing building service <br /> equipment to become unsafe, insanitary or overloaded <br /> Existing installations. Building service equipment lawfully in existence at the time of the <br /> adoption of the technical codes may have their use, maintenance or repair continued if the <br /> use, maintenance or repair is in accordance with the original design and a hazard to life, <br /> health or property has not been created by such building service equipment <br /> Existing occupancy. The legal occupancy of any structure existing on the date of adoption <br /> of this code shall be permitted to continue without change, except as is specifically covered <br /> in this code, the California Building Code, the California Existing Building Code or the <br /> California Fire Code, or as is deemed necessary by the Building and Safety Official for the <br /> general safety and welfare of the occupants and the public A change in the use or <br /> occupancy of any existing building or structure shall comply with the provisions of Section <br /> 20 04 410 of this code and the California Existing Building Code <br /> Installation of smoke alarms. No residential property may be sold or traded in the City of <br /> Pleasanton unless and until the seller installs or provides for the installation of smoke <br />