Nebraska Revised Statute 77-202.04
(1) Notice of a county board of equalization's decision granting or denying an application for exemption from taxation for real or tangible personal property shall be mailed or delivered to the applicant and the county assessor by the county clerk within seven days after the date of the board's decision. Persons, corporations, or organizations may appeal denial of an application for exemption by a county board of equalization. Only the county assessor, the Tax Commissioner, or the Property Tax Administrator may appeal the granting of such an exemption by a county board of equalization. Appeals pursuant to this section shall be made to the Tax Equalization and Review Commission in accordance with section 77-5013 within thirty days after the decision of the county board of equalization. The Tax Commissioner or Property Tax Administrator may in his or her discretion intervene in any such appeal pursuant to this section within thirty days after notice by the Tax Equalization and Review Commission that an appeal has been filed pursuant to this section. If the county assessor, Tax Commissioner, or Property Tax Administrator appeals a county board of equalization's final decision granting an exemption from property taxation, the person, corporation, or organization granted such exemption by the county board of equalization shall be made a party to the appeal and shall be issued a notice of the appeal by the Tax Equalization and Review Commission within thirty days after the appeal is filed.
(2) A copy of the final decision by a county board of equalization shall be delivered electronically to the Tax Commissioner and the Property Tax Administrator within seven days after the date of the board's decision. The Tax Commissioner or the Property Tax Administrator shall have thirty days after the final decision to appeal the decision.
(3) Any owner may petition the Tax Equalization and Review Commission in accordance with section 77-5013, on or before December 31 of each year, to determine the taxable status of real property for that year if a failure to give notice as prescribed by this section prevented timely filing of a protest or appeal provided for in sections 77-202 to 77-202.25.