162.607—Duration of leases.
Leases granted or approved under this part shall be limited to the minimum duration, commensurate with the purpose of the lease, that will allow the highest economic return to the owner consistent with prudent management and conservation practices, and except as otherwise provided in this part shall not exceed the number of years provided for in this section. Except for those leases authorized by § 162.604(b)(1) and (2) of this subpart, unless the consideration for the lease is based primarily on percentages of income produced by the land, the lease shall provide for periodic review, at not less than five-year intervals, of the equities involved. Such review shall give consideration to the economic conditions at the time, exclusive of improvement or development required by the contract or the contribution value of such improvements. Any adjustments of rental resulting from such review may be made by the Secretary where he has the authority to grant leases, otherwise the adjustment must be made with the written concurrence of the owners and the approval of the Secretary.
(a)
Leases for public, religious, educational, recreational, residential, or business purposes shall not exceed 25 years but may include provisions authorizing a renewal or an extension for one additional term of not to exceed 25 years, except such leases of land on the Hollywood (formerly Dania) Reservation, Fla.; the Navajo Reservation, Ariz., N. Mex., and Utah; the Palm Springs Reservation, Calif.; the Southern Ute Reservation, Colo.; the Fort Mohave Reservation, Calif., Ariz., and Nev.; the Pyramid Lake Reservation, Nev.; the Gila River Reservation, Ariz.; the San Carlos Apache Reservation, Ariz.; the Spokane Reservation, Wash.; the Hualapai Reservation, Ariz.; the Swinomish Reservation, Wash.; the Pueblos of Cochiti, Pojoaque, Tesuque, and Zuni, N. Mex.; and land on the Colorado River Reservation, Ariz., and Calif.; which leases may be made for terms of not to exceed 99 years.
(b)
Leases granted by the Secretary pursuant to § 162.601(a)(3) of this subpart shall be for a term of not to exceed two years except as otherwise provided in § 162.605(b) of this subpart.