Neb. Rev. Stat. § 76-3109

A private transfer fee obligation recorded or entered into in this state on or after March 11, 2011, does not run with the title to real property and is not binding on or enforceable at law or in equity against any subsequent owner, purchaser, mortgagee, or trustee of any interest in real property as an equitable servitude or otherwise. Any private transfer fee obligation that is recorded or entered into in this state on or after March 11, 2011, is void and unenforceable. This section shall not be construed to mean that a private transfer fee obligation recorded or entered into in this state before March 11, 2011, is presumed valid and enforceable.