Tex. Tax Code § 23.86

(a) If land that has been appraised under this subchapter is no longer subject to a deed restriction or is diverted to a use other than recreational, park, or scenic uses, an additional tax is imposed on the land equal to the difference between the taxes imposed on the land for each of the three years preceding the year in which the change of use occurs or the deed restriction expires that the land was appraised as provided by this subchapter and the tax that would have been imposed had the land not been restricted to recreational, park, or scenic uses in each of those years.

(b) A tax lien attaches to the land on the date the change of use occurs or the deed restriction expires to secure payment of the additional tax imposed by this section and any penalties and interest incurred if the tax becomes delinquent. The lien exists in favor of all taxing units for which the additional tax is imposed.

(c) The assessor shall prepare and deliver a statement for the additional taxes as soon as practicable after the change of use occurs or the deed restriction expires. The taxes become delinquent and incur penalties and interest as provided by law for ad valorem taxes imposed by the taxing unit if not paid before the next date on which the unit's taxes become delinquent that is more than 10 days after the date the statement is delivered.

(d) The sanctions provided by Subsection (a) of this section do not apply if the change of use occurs as a result of a sale for right-of-way or a condemnation.