R105.5 Expiration.
Every permit issued shall become invalid unless the work authorized by such permit is commenced within 180 days after its issuance, or if the work authorized by such permit is suspended or abandoned for a period of 180 days after the time the work is commenced. The building official is authorized to grant, in writing, one or more extensions of time, for periods not more than 180 days each. The extension shall be requested in writing and justifiable cause demonstrated.
R105.6 Suspension or revocation.
The building official is authorized to suspend or revoke a permit issued under the provisions of this code wherever the permit is issued in error or on the basis of incorrect, inaccurate or incomplete information, or in violation of any ordinance or regulation or any of the provisions of this code.
R105.7 Placement of permit.
The building permit or copy thereof shall be kept on the site of the work until the completion of the project.
R105.8 Responsibility.
It shall be the duty of every person who performs work for the installation or repair of building, structure, electrical, gas, mechanical or plumbing systems, for which this code is applicable, to comply with this code.

chris Phone #: ###-####wrong permit#

bill Phone #: ###-#### need duct for vent fan instaled w mech permit and insp./ need to chalk and seal with insulation install. ok to insulate.