C.R.S. § 38-10-106: Conveyance - trust - power must be in writing.

No estate or interest in lands, other than leases for a term not exceeding one year, nor any trust or power over or concerning lands or in any manner relating thereto shall be created, granted, assigned, surrendered, or declared, unless by act or operation of law, or by deed or conveyance in writing subscribed by the party creating, granting, assigning, surrendering, or declaring the same, or by his lawful agent thereunto authorized by writing.