25 CFR § 162.414
May permanent improvements be made under a business lease?
February 24, 2021
The lessee may construct permanent improvements under a business lease if the business lease specifies, or provides for the development of:
(a) A plan that describes the type and location of any permanent improvements to be constructed by the lessee; and
(b) A general schedule for construction of the permanent improvements, including dates for commencement and completion of construction.