Control periods for restricted rental units shall be in accordance with N.J.A.C. 5:80-26.11, as may be amended and supplemented, and each restricted rental unit shall remain subject to the requirements of this subsection until the Borough of Sea Girt elects to release the unit from such requirements pursuant to action taken in compliance with N.J.A.C. 5:80-26.1, as may be amended and supplemented, and prior to such an election, a restricted rental unit must remain subject to the requirements of N.J.A.C. 5:80-26.1, as may be amended and supplemented, for at least 30 years.