(j) Payment before taking possession. Before requiring the owner to surrender possession of the real property, the Agency shall pay the agreed purchase price to the owner, or in the case of a condemnation, deposit with the court, for the benefit of the owner, an amount not less than the Agency's approved appraisal of the fair market value of such property, or the court award of compensation in the condemnation proceeding for the property. In exceptional circumstances, with the prior approval of the owner, the Agency may obtain a right-of-entry for construction purposes before making payment available to an owner. (See appendix A, § 24.102(j).)