Neb. Rev. Stat. § 3-403: Neb. Rev. Stat. § 3-403

It shall be unlawful for any person, firm, or corporation, without having first applied for and obtained a permit in writing from the Division of Aeronautics of the Department of Transportation, to build, erect, or maintain any structure within the State of Nebraska, the height of which exceeds one hundred fifty feet above the surface of the ground at point of installation.