At his/her discretion, examine, or cause to be examined, all buildings, structures, signs, and/or land or portions thereof, for which an application has been filed for the erection, construction, alteration, repair, extension, replacement, and/or use before issuing any permit, and otherwise as required to fulfill her/his duties. Thereafter, he/she may make such inspections during the completion of work for which a permit has been issued. Upon completion of the building, structure, sign and/or change, a final inspection shall be made and all violations of the approved plans or zoning permit shall be noted and the holder of the zoning permit shall be notified of the discrepancies. He/she shall have the power to enter any building or structure or enter upon any land at any reasonable hour in the course of his/her duties. Should such access be prevented by any property owner, lessee or other person, he/she shall have the authority, with the approval of the Board of Supervisors, to obtain a search warrant for said property.