34 C.F.R. § 226.21
(a) Charter schools that receive grant funds through their State must use the funds for facilities. Except as provided in paragraph (b) of this section, allowable expenditures include:
(b) Charter schools may not use these grant funds for purchasing land when they have no immediate plans to construct a building on that land.
(Authority: 20 U.S.C. 7221d(b))