Tex. Local Government Code § 42.047

If the governing body of a municipality that has disannexed territory previously annexed for limited purposes refuses to designate a planned unit development district under Section 42.046 no later than 180 days after the date a request for the designation is filed with the municipality by the owner of the land to be included in the planned unit development district, the municipality shall be considered to have given the consent required by Section 42.041 to the incorporation of a proposed municipality including within its boundaries all or some of such land. If consent to incorporation is granted by this subsection, the consenting municipality waives all rights to challenge the proposed incorporation in any court.