Unless the land described in an application made under the provisions of this chapter has been appraised within two years prior to the filing of the application, the board of university and school lands shall have the same appraised in accordance with the provisions of this title, and if the land described in the application is a fractional part of an appraised tract, an appraisal thereof must be made in any event.
N.D.C.C. § 15-09-02