The following codes and standards are hereby adopted by reference and made a part of this Subtitle with the same force and effect as those set out in full herein as the official Building Code of Prince George's County, together with the changes, deletions, or modifications prescribed in this Subtitle: The International Building Code, 2021 Edition (hereinafter referred to as the 'IBC'); The International Mechanical Code, 2021 Edition (hereinafter referred to as the 'IMC'); The International Energy Conservation Code, 2021 Edition (hereinafter referred to as the 'IECC'); and The International Residential Code for One- and Two-Family Dwellings, 2021 Edition (hereinafter referred to as the 'IRC'). The International Swimming Pool and Spa Code, 2021 Edition (hereinafter referred to as the 'ISPSC') The International Existing Building Code 2021 Edition (hereinafter referred to as the 'IEBC'). The National Fire Protection Association Life Safety Code 101, 2021 Edition (hereinafter referred to as the 'NFPA 101') as amended in Subtitle 11. The National Fire Protection Association Fire Code 1, 2021 Edition (hereinafter referred to as the 'NFPA 1') as amended in Subtitle 11. The National Electrical Code (NEC), 2020 Edition (hereinafter referred to as the 'NEC') as amended by Subtitle 9. The following apply to the above-mentioned codes and the referenced and their Appendices: The provisions contained in the Appendices of above-mentioned codes may only be utilized upon written approval by the code official/designee. DPIE has final determination to either accept or refuse the use of Appendices. Where the codes/standards defer to the local jurisdiction to establish criteria, the code official or designee shall publish such criteria. Standards. Where existing standards or requirements adopted herein have been updated or superseded by the promulgating authority, such revised standard or requirement shall be deemed as the current code adopted and as prima facie evidence of compliance with the intent of the Subtitle. Conflict with the Washington Suburban Sanitary Commission Plumbing and Fuel Gas Code: If a conflict exists between the standards or requirements set forth in the adopted Codes and the standards and requirements for plumbing and gasfitting as set forth in the Washington Suburban Sanitary Commission Plumbing and Fuel Gas Code, the standards or requirements set forth in the latter shall govern. Exemption from Jurisdiction. The Building Code shall not apply to public premises, including any buildings or other structures, owned by the United States Government, including appurtenant structures and portions of premises, buildings, or other structures, that are under exclusive control of an officer of the United States government in his or her official capacity. The premises shall not be deemed to be under the exclusive control of an officer of the United States government where: (a) the premises (or any portions thereof) are leased to the United States of America, but the lessor is responsible for maintenance and repairs to the leased premises; or (b) the premises are owned by the United States of America, but leased to a person or persons other than the United States of America for development pursuant to a long-term ground lease or comparable property interest. Public Utilities Building. Unless approved by DPIE, a permit shall be required under the Building Code for the installation, alteration or repair of equipment and facilities used for generation, transmission, distribution, metering or treatment that is under the ownership or control of public service agencies subject to the jurisdiction of the Prince George's County Public Services Commission or Washington Suburban Sanitation Commission. The Prince George's County Public Service Commission has jurisdiction over the electric, natural gas and local telephone companies in the County.