Sec. 4. (a) Real property and easements or appurtenances may be acquired by any of the following methods:
(1) Gift as provided in section 1 of this chapter.
(2) Purchase with money accepted for that purpose.
(3) Condemnation proceedings as prescribed by statute.
(b) Upon condemnation, all damages must be paid from the money accepted as provided in section 1 of this chapter. All money remaining in the account after the construction and equipment of the building may be used for the maintenance of the building. The county or city may levy a tax sufficient to maintain the buildings when constructed as provided in this chapter.