It is unlawful for an owner, agent or subdivider, after submitting to the commissioner a plan under which unsubdivided lands are to be offered for sale or lease and securing his approval, to change the plan materially without first notifying the commissioner in writing of the intended change. On receipt of a notice of a change of plan, the commissioner, if he determines such action to be necessary for the protection of purchasers, may suspend his approval of the sale or lease pending amendment of the public report.
A.R.S. § 32-2195.10