Utah Code § 57-8-13.8

A condominium project may be contracted under the provisions of the declaration and the provisions of this chapter. Any such contraction shall be considered to have occurred at the time of the recordation of an amendment to the declaration, executed by the declarant, containing a legal description by metes and bounds of the land withdrawn from the condominium project. If portions of the withdrawable land were described pursuant to Subsection 57-8-10(5)(a)(iv), then no described portion may be so withdrawn after the conveyance of any unit on the portion. If no withdrawable portions were described, then none of the withdrawable land may be withdrawn after the first conveyance of any unit on the portion.